TM 9-2320-328-13P-1 HEWATT M1158 PART 4
Transcript of TM 9-2320-328-13P-1 HEWATT M1158 PART 4
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TM 9-2320-328-13&P-1
0057-36
DRAFT 0057
HWT0386
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 49. Connect air lines at foam system shutoff valve. Disconnect pump house wire harnessfoam system shutoff control valve connector. Put cab or pump operators panel FOAM
SYSTEM switch to ON position (WP 0004) and release. With a test lead set, check for
22 to 28 VDC between pump house wire harness wire 2830 (red) at pump house wire
harness foam system shutoff control valve connector, terminal 1 and a known good
ground.
If 22 to 28 VDC are not present, repair wire 2830 in pump house wire
harness if repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
Step 50. Pull battery disconnect switch to off position (WP 0007). With a test lead set, check for
continuity across wire 2200 (black) from pump house wire harness foam system shutoff
control valve connector, terminal 2 to a known good ground.
a. If there is continuity, replace foam system shutoff control valve
(WP 0271).
b. If there is no continuity, repair wire 2200 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0057
HWT0882A
Step 54. Pull battery disconnect switch to off position (WP 0007). Disconnect main wire harness
pump house wire harness connector. With a test lead set, check for continuity across
pump house wire harness wire 2830 (red) from main wire harness pump house wire
harness connector, terminal 4 to pump house wire harness foam system shutoff control
valve connector, terminal 1.
a. If there is continuity, repair wire 2830 in main wire harness if repairable
(TM 9-2320-325-14&P), or replace main wire harness (WP 0292).
b. If there is no continuity, repair wire 2830 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0057
HWT0365
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 55. Pull battery disconnect switch to off position (WP 0007). Remove cab instrument
panel A (WP 0205). Remove circuit breaker FS 15 (WP 0242). Check for continuity
across circuit breaker.
If there is no continuity, replace circuit breaker FS 15 (WP 0242).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0057
END OF TASK
FOLLOW-ON MAINTENANCE
Remove wheel chocks (TM 9-2320-422-10)
END OF TASK
END OF WORK PACKAGE
HWT1293
Step 56. Install circuit breaker FS 15 (WP 0242). Disconnect cab pump control wire harness cab
power distribution wire harness connector. With a test lead set, check for continuity
across cab pump control harness wire 2816 (red) from cab pump control wire harness
FOAM SYSTEM switch connector, terminal 5 to cab pump control wire harness
connector, terminal C.
a. If there is continuity, repair wire 2816 in cab power distribution wire
harness if repairable (TM 9-2320-325-14&P), or replace cab power
distribution wire harness and block (WP 0280).
b. If there is no continuity, repair wire 2816 in cab pump control wire
harness if repairable (TM 9-2320-325-14&P), or replace cab pump
control wire harness (WP 0281).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0058-1
DRAFT 0058FIELD LEVEL MAINTENANCE
FOAM NOT DELIVERED FROM BUMPER TURRET
INITIAL SETUP:
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
FOAM NOT DELIVERED FROM BUMPER TURRET
HWT0346
Step 1. Remove pump house panel K (WP 0339). Check if foam system service valve is in
open position.
If foam system service valve is not in open position, position valve to open
position (WP 0004).
Tools and Special ToolsTest Lead Set (WP 0398, Item 14)
Tool Kit, General Mechanics: Automotive
(WP 0398, Item 17)
Personnel Required
MOS 63B Wheeled Vehicle Mechanic (2)
References
TM 9-2320-325-14&P
WP 0004
WP 0007
WP 0009
WP 0057
References (continued)WP 0063
WP 0173
WP 0247
WP 0271
WP 0302
WP 0339
WP 0374
Equipment Conditions
Engine OFF (TM 9-2320-422-10)
Wheels chocked (TM 9-2320-422-10)
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DRAFT 0058
HWT0395
Step 3. Remove pump house panel H (WP 0339). Put FOAM SYSTEM switch to OFF position
(WP 0004). Put bumper turret POWER switch to | (on) position (WP 0004). While an
assistant pushes and holds bumper turret control agent discharge button (WP 0004),
check if bumper turret valve operates to open position.
If bumper turret valve does not operate to open position, troubleshoot
Bumper Turret Does Not Operate Properly When Selected (WP 0063).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0058
HWT0396
Step 4. Put cab or pump operators panel FOAM SYSTEM switch to ON position (WP 0004).
Check if bumper turret foam metering valve operates to open position.
If bumper turret foam metering valve operates to open position, remove and
clean or replace bumper turret foam metering valve orifice/restrictor
(WP 0173).
Step 5. Release bumper turret control agent discharge button (WP 0004). Inspect air line from
air control valve manifold to bumper turret foam metering valve for kinks and/ordamage.
If air lines are kinked or damaged, replace damaged air lines (WP 0374).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0058
HWT0397
WARNING
ICON 26,66
Be sure to wear proper eye protection to prevent injury or death. If air lines are
under pressure when they are disconnected, they can whip around and cause
injury to personnel. Caution should be exercised when disconnecting air line
fittings.
Be sure to wear proper eye protection to prevent injury or death. Air lines may beunder pressure when control valve is operated. If under pressure and air lines are
disconnected, air lines may whip around and cause injury to personnel. Caution
should be exercised when operating control valve with air lines disconnected.
NOTE
Air pressure is checked by disconnecting air line at bumper turret foam metering valve and
observing air pressure escaping from air line, when bumper turret foam metering control
valve is activated. Air will escape from blue air line when bumper turret discharge switch
is pressed. System air pressure may drop below 85 psi (586 kPa) during this procedure.
Step 6. Remove hose reel (WP 0247). Disconnect air line at bumper turret foam metering
valve. While an assistant pushes and holds bumper turret control agent dischargebutton (WP 0004), check if air pressure is present at bumper turret foam metering
valve.
If there is air pressure, replace bumper turret foam metering
valve (WP 0173).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0058-6
DRAFT 0058
HWT0398
WARNING
ICON 72Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 7. Release bumper turret control agent discharge button (WP 0004). Connect air line at
bumper turret foam metering valve. Disconnect pump house wire harness bumper
turret foam metering control valve connector. While an assistant pushes and holds
bumper turret discharge button (WP 0004), with a test lead set, check for 22 to 28 VDC
between pump house wire harness wire 2837 (gray) at bumper turret foam metering
control valve connector, terminal 1, and a known good ground.
If 22 to 28 VDC are not present, repair wire 2837 in pump house wireharness if repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0058
END OF TASK
FOLLOW-ON MAINTENANCE
Remove wheel chocks (TM 9-2320-422-10)
END OF TASK
END OF WORK PACKAGE
HWT0896
Step 8. Release bumper turret control agent discharge button (WP 0004). Put bumper turret
power switch to (off) position (WP 0004). Pull battery disconnect switch to off
position (WP 0007). With a test lead set, check for continuity across wire 2200 (black)
from pump house wire harness bumper turret foam metering control valve connector,
terminal 2 to a known good ground.
a. If there is continuity, replace bumper turret foam metering controlvalve (WP 0271).
b. If there is no continuity, repair wire 2200 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0059-1
DRAFT 0059FIELD LEVEL MAINTENANCE
FOAM NOT DELIVERED FROM UNDER TRUCK NOZZLES
INITIAL SETUP:
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
FOAM NOT DELIVERED FROM UNDER TRUCK NOZZLES
HWT0500
Step 1. Remove pump house panel K (WP 0339). Check if foam system service valve is in
open position.
If foam system service valve is not in open position, put valve to open
position (WP 0004).
Tools and Special ToolsLead Set, Test (WP 0398, Item 14)
Tool Kit, General Mechanics: Automotive
(WP 0398, Item 17)
Personnel Required
MOS 63B Wheeled Vehicle Mechanic (2)
References
TM 9-2320-325-14&P
WP 0004
WP 0007
WP 0008
WP 0057WP 0077
References (continued)WP 0174
WP 0247
WP 0271
WP 0302
WP 0339
WP 0374
Equipment Conditions
Engine OFF (TM 9-2320-422-10)
Wheels chocked (TM 9-2320-422-10)
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0059-2
DRAFT 0059
HWT0751A
NOTE
Ensure system air pressure is at least 85 psi (586 kPa) during this procedure. System airpressure is required to activate valves.
Do not engage PUMP PTO during this procedure, except when performing complete
system checks. Valve operations can be checked without water pump operation.
Valve operations can be checked by observing valve shaft rotation. Valves are open when
tabs or yellow paint tabs are aligned with direction of fluid flow.
Step 2. Push battery disconnect switch to on position (WP 0007). If system air pressure is
below 85 psi (586 kPa), start engine and allow system air pressure to build to at least
85 psi (586 kPa) (TM 9-2320-422-10). Then shut off engine (TM 9-2320-422-10).
Open pump house controls access door(WP 0008). While an assistant puts cab FOAM
SYSTEM switch to on position (WP 0004), check if foam system shutoff valve and
eductor valve operate to open position.
If foam system shutoff valve or eductor valve do not operate to open
position, troubleshoot Foam Not Delivered From All Systems (Bumper
Turret, Under Truck Nozzles, and Manual Metering Controls) or System
Does Not Shut Off(WP 0057).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0059-3
DRAFT 0059
HWT0502
Step 3. Put cab FOAM SYSTEM switch to off position (WP 0004). While an assistant puts
UNDER TRUCK NOZZLES switch to on position (WP 0004), check if under truck
nozzles valve operates to open position.
If under truck nozzles valve does not operate to open position, troubleshoot
Under Truck Nozzles Do Not Operate When Selected (WP 0077).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0059-5
DRAFT 0059
HWT0504
WARNING
ICON 26,66
Be sure to wear proper eye protection to prevent injury or death. If air lines are
under pressure when they are disconnected, they can whip around and cause
injury to personnel. Caution should be exercised when disconnecting air line
fittings.
Be sure to wear proper eye protection to prevent injury or death. Air lines may be
under pressure when control valve is operated. If under pressure and air lines are
disconnected, air lines may whip around and cause injury to personnel. Caution
should be exercised when operating control valve with air lines disconnected.
NOTE
Air pressure is checked by disconnecting air line at under truck nozzles foam metering
valve and observing air pressure escaping from air line. When under truck nozzles foam
metering control valve is activated, air will escape from air line. System air pressure may
drop below 85 psi (586 kPa) during this procedure.
Step 6. Remove hose reel (WP 0247). Disconnect air line at under truck nozzles foam
metering valve (WP 0174). While an assistant puts UNDER TRUCK NOZZLES switch
to on position (WP 0004), check if air pressure is present at under truck nozzles foam
metering valve.
If there is air pressure, replace under truck nozzles foam metering valve
(WP 0174).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0059-7/(8 blank)
DRAFT 0059FOLLOW-ON MAINTENANCE
Remove wheel chocks (TM 9-2320-422-10)
END OF TASK
END OF WORK PACKAGE
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0060-1
DRAFT 0060FIELD LEVEL MAINTENANCE
FOAM NOT DELIVERED WHEN MANUAL METERING CONTROL IS OPERATED
INITIAL SETUP:
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
FOAM NOT DELIVERED WHEN MANUAL METERING CONTROL IS OPERATED
HWT0326
Step 1. Remove pump house panel K (WP 0339). Check if foam system service valve is in
open position.
If foam system service valve is not in open position, put valve to open
position (WP 0004).
Tools and Special ToolsTool Kit, General Mechanics: Automotive
(WP 0398, Item 17)
Personnel Required
MOS 63B Wheeled Vehicle Mechanic (2)
References
WP 0004
WP 0007
WP 0008
WP 0019
WP 0021
References (continued)WP 0022
WP 0024
WP 0057
WP 0181
WP 0320
WP 0339
Equipment Conditions
Engine OFF (TM 9-2320-422-10)
Wheels chocked (TM 9-2320-422-10)
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0060-4
DRAFT 0060
END OF TASK
FOLLOW-ON MAINTENANCE
Remove wheel chocks (TM 9-2320-422-10)
END OF TASK
END OF WORK PACKAGE
HWT0325A
Step 4. Push NO. 1 DRIVER SIDE DISCHARGE valve control FLOW button (WP 0004). Check
position of manual metering control valve. Ensure that manual metering valve is set to
match output of NO. 1 DRIVER SIDE DISCHARGE valve control (WP 0021). Set
manual metering control valve to proper adjustment using manual metering controlvalve data plate valve settings. Start engine (TM 9-2320-422-10). Set up system to
pump from tank (WP 0019). Turn on foam system (WP 0024). Check if foam is
delivered when system is operated. Turn off foam system (WP 0024). Flush foam
system (WP 0022).
a. If foam is delivered, problem has been corrected. Notify Supervisor.
b. If foam is not delivered, replace manual metering valve (WP 0181).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-1
DRAFT 0061FIELD LEVEL MAINTENANCE
FOAM SYSTEM CANNOT BE FLUSHED
INITIAL SETUP:
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
FOAM SYSTEM CANNOT BE FLUSHED
HWT0804A
Step 1. Push battery disconnect switch to on position (WP 0007). Put pump operators panel
PUMP COOLER switch to ON position (WP 0004). Check if PUMP COOLER indicator
illuminates.
If PUMP COOLER indicator does not illuminate, go to Step 21.
Tools and Special ToolsLead Set, Test (WP 0398, Item 14)
Tool Kit, General Mechanics: Automotive
(WP 0398, Item 17)
Personnel Required
MOS 63B Wheeled Vehicle Mechanic (2)
References
TM 9-2320-422-10
TM 9-2320-325-14&P
WP 0004
WP 0007
WP 0178WP 0179
WP 0183
WP 0205
WP 0207
References (continued)WP 0220
WP 0242
WP 0269
WP 0271
WP 0280
WP 0292
WP 0302
WP 0303
WP 0320
WP 0339
WP 0374
Equipment Conditions
Engine OFF (TM 9-2320-422-10)
Wheels chocked (TM 9-2320-422-10)
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0061-2
DRAFT 0061
HWT0508
NOTE
Ensure system air pressure is at least 85 psi (586 kPa) during this procedure. System air
pressure is required to activate valves.
Do not engage PUMP PTO during this procedure, except when performing complete
system checks. Valve operations can be checked without water pump operation.
Valve operations can be checked by observing valve shaft rotation. Valves are open when
tabs or yellow paint tabs are aligned with direction of fluid flow.
Step 2. Put PUMP COOLER switch to OFF position (WP 0004). If system air pressure is below
85 psi (586 kPa), start engine and allow system air pressure to build to at least 85 psi
(586 kPa) (TM 9-2320-422-10). Then shut off engine (TM 9-2320-422-10). Remove
pump house panel K (WP 0339). While an assistant puts pump operators panel FOAM
FLUSH switch to ON position (WP 0004), check if foam flush valve operates to open
position.
If foam flush valve does not operate to open position, go to Step 12.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0061
HWT0509
Step 3. Put FOAM FLUSH switch to OFF position (WP 0004). While an assistant puts pump
operators panel FOAM FLUSH switch to ON position (WP 0004), check if eductor valve
operates to open position.
If eductor valve does not operate to open position, go to Step 5.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-4
DRAFT 0061
HWT0511
Step 4. Put FOAM FLUSH switch to OFF position (WP 0004). Inspect foam flush valve tubing
between foam flush valve and foam metering manifold for kinks and damage.
a. If foam flush valve tubing is free from kinks and/or damage, clean or
replace foam flush strainer screen (WP 0183).
b. If foam flush valve tubing is kinked or damaged, replace damaged
tubing (WP 0320).
Step 5. Put FOAM FLUSH switch to OFF position (WP 0004). While an assistant puts cab or
pump operators panel FOAM SYSTEM switch to ON position (WP 0004), check if
eductor valve operates to open position.
If eductor valve does not operate to open position, go to Step 8.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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HWT0512
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 6. Put FOAM SYSTEM switch to OFF position (WP 0004). Disconnect diode pack from
pump house wire harness (WP 0269). Put pump operators panel FOAM FLUSH switch
to ON position (WP 0004). With a test lead set, check for 22 to 28 VDC between pump
house wire harness wire 2849 (yellow) at diode pack connector, terminal B and a known
good ground.
If 22 to 28 VDC are not present, repair wire 2849 in pump house wire
harness if repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
Step 7. Put pump operators panel FOAM FLUSH switch to OFF position (WP 0004). Pull
battery disconnect switch to off position (WP 0007). Disconnect pump house wire
harness eductor control valve connector. With a test lead set, check for continuity
across wire 4054 (yellow) from pump house wire harness diode pack connector,
terminal D to pump house wire harness eductor control valve connector, terminal 1.
a. If there is continuity, replace diode pack (WP 0269).
b. If there is no continuity, repair wire 4054 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0061
HWT1246
Step 8. Put FOAM SYSTEM switch to OFF position (WP 0004). Inspect air line from air control
valve manifold to eductor valve for kinks and damage.
If air line is kinked or damaged, replace damaged air line (WP 0374).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-7
DRAFT 0061
HWT0514
WARNING
ICON 26,66
Be sure to wear proper eye protection to prevent injury or death. If air lines areunder pressure when they are disconnected, they can whip around and cause
injury to personnel. Caution should be exercised when disconnecting air line
fittings.
Be sure to wear proper eye protection to prevent injury or death. Air lines may be
under pressure when control valve is operated. If under pressure and air lines are
disconnected, air lines may whip around and cause injury to personnel. Caution
should be exercised when operating control valve with air lines disconnected.
NOTE
Air pressure is checked by disconnecting air line at eductor valve and observing air
pressure escaping from air line, when eductor control valve is activated. Air will escape
from the blue air line when FOAM FLUSH switch is put to on position. System airpressure may drop below 85 psi (586 kPa) during this procedure.
Step 9. Disconnect air line at eductor valve. While an assistant puts pump operators panel
FOAM FLUSH switch to ON position (WP 0004), check if air pressure is present at
eductor valve.
If there is air pressure, replace eductor valve (WP 0178).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-8
DRAFT 0061
HWT0513
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 10. Connect air line at eductor valve. Disconnect pump house wire harness eductor control
valve connector. Put pump operators panel FOAM FLUSH switch to ON position
(WP 0004). With a test lead set, check for 22 to 28 VDC between pump house wire
harness wire 4054 (yellow) at pump house wire harness eductor control valve
connector, terminal 1 and a known good ground.
If 22 to 28 VDC are not present, repair wire 4054 in pump house wire
harness if repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
Step 11. Put FOAM FLUSH switch to OFF position (WP 0004). Pull battery disconnect switch to
off position (WP 0007). With a test lead set, check for continuity across wire 2200
(black) from pump house wire harness eductor control valve connector, terminal 2 to aknown good ground.
a. If there is continuity, replace eductor shutoff control valve (WP 0271).
b. If there is no continuity, repair wire 2200 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-9
DRAFT 0061
HWT1334
Step 12. Put FOAM FLUSH switch to OFF position (WP 0004). Inspect red and blue air lines
from air control valve manifold to foam flush valve for kinks and damage.
If air lines are kinked or damaged, replace damaged air lines (WP 0374).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-11
DRAFT 0061
HWT0516
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before workingaround vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 14. Connect air lines at foam flush valve. Disconnect pump house wire harness foam flush
control valve connector. Put pump operators panel FOAM FLUSH switch to ON
position (WP 0004). With a test lead set, check for 22 to 28 VDC between pump house
wire harness wire 2849 (yellow) at pump house wire harness foam flush control valve
connector, terminal 1 and a known good ground.
If 22 to 28 VDC are not present, go to Step 16.
Step 15. Put FOAM FLUSH switch to OFF position (WP 0004). Pull battery disconnect switch to
off position (WP 0007). With a test lead set, check for continuity across wire 2200
(black) from pump house wire harness foam flush control valve connector, terminal 2 to
a known good ground.
a. If there is continuity, replace foam flush control valve (WP 0271).
b. If there is no continuity, repair wire 2200 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-12
DRAFT 0061
HWT1428A
Step 16. Check if FOAM FLUSH indicator is illuminated (WP 0004).
If FOAM FLUSH indicator is not illuminated, go to Step 19.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-13
DRAFT 0061
HWT0517
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelryand tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 17. Disconnect main wire harness pump house wire harness connector. Put pump
operators panel FOAM FLUSH switch to ON position (WP 0004). With a test lead set,
check for 22 to 28 VDC between main wire harness wire 2849 (yellow) at pump house
wire harness connector, terminal 1, and a known good ground.
If 22 to 28 VDC are present, repair wire 2849 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-14
DRAFT 0061
HWT1019A
Step 18. Put FOAM FLUSH switch to OFF position (WP 0004). Pull battery disconnect switch to
off position (WP 0007). Disconnect main wire harness pump operators panel 27-pin
wire harness connector. With a test lead set, check for continuity across main wire
harness wire 2849 (yellow) from main wire harness pump operators panel 27-pin wire
harness connector, terminal 11 to main wire harness pump house wire harness
connector, terminal 1.
a. If there is continuity, repair wire 2849 in pump operators panel wire
harness if repairable (TM 9-2320-325-14&P), or replace pump
operators panel wire harness (WP 0303).
b. If there is no continuity, repair wire 2849 in main wire harness if
repairable (TM 9-2320-325-14&P), or replace main wire
harness (WP 0292).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-15
DRAFT 0061
HWT0519A
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 19. Pull battery disconnect switch to off position (WP 0007). Open pump operators panel
(WP 0207). Push battery disconnect switch to on position (WP 0007). Check for 22 to
28 VDC between pump operators panel wire harness wire 2834 (red) at FOAM FLUSH
switch terminal and a known good ground.
If 22 to 28 VDC are present, repair wire 2834 in pump operators panel wire
harness if repairable (TM 9-2320-325-14&P), or replace pump operators
panel wire harness (WP 0303).
Step 20. Pull battery disconnect switch to off position (WP 0007). Put FOAM FLUSH switch to
ON position (WP 0004). With a test lead set, check for continuity across pump
operators panel FOAM FLUSH switch from terminal wire 2834 (red) to terminal wire
2849 (yellow).
a. If there is continuity, repair wire 2849 in pump operators panel wire
harness if repairable (TM 9-2320-325-14&P), or replace pump
operators panel wire harness (WP 0303).
b. If there is no continuity, replace pump operators panel FOAM FLUSH
switch (WP 0220).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-16
DRAFT 0061
HWT0809
Step 21. Put pump operators panel PUMP COOLER switch to OFF position (WP 0004). Put cab
PUMP COOLER switch to ON position (WP 0004). Check if cab PUMP COOLER
indicator illuminates.
If cab PUMP COOLER indicator does not illuminate, go to Step 24.
HWT1020A
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 22. Put cab PUMP COOLER switch to OFF position (WP 0004). Disconnect main wire
harness pump operators panel 27-pin wire harness connector. With a test lead set,
check for 22 to 28 VDC between main wire harness wire 2834 (red) at pump operators
panel 27-pin wire harness connector, terminal 7 and a known good ground.
If 22 to 28 VDC are present, repair wire 2834 in pump operators panel wire
harness if repairable (TM 9-2320-325-14&P), or replace pump operators
panel wire harness (WP 0303).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-17
DRAFT 0061
HWT1021A
Step 23. Remove skid plate grille (WP 0349). Pull battery disconnect switch to off position
(WP 0007). Disconnect main wire harness main 1 connector. With a test lead set,
check for continuity across main wire harness wire 2834 (red) from main 1 connector,
terminal 4 to pump operators panel 27-pin wire harness connector, terminal 7.
a. If there is continuity, repair wire 2834 in cab power distribution wire
harness if repairable (TM 9-2320-325-14&P), or replace cab power
distribution wire harness and block (WP 0280).
b. If there is no continuity, repair wire 2834 in main wire harness if
repairable (TM 9-2320-325-14&P), or replace main wire harness
(WP 0292).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0061-18
DRAFT 0061
END OF TASK
FOLLOW-ON MAINTENANCE
Remove wheel chocks (TM 9-2320-422-10)
END OF TASK
END OF WORK PACKAGE
HWT0522
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 24. Remove cab instrument panel A (WP 0205). Put PUMP COOLER switch to OFF
position (WP 0004). Pull battery disconnect switch to off position (WP 0007). Remove
circuit breaker 10 (WP 0242). Check for continuity across circuit breaker.
a. If there is continuity, repair wire 2834 in cab power distribution wire
harness if repairable (TM 9-2320-325-14&P), or replace cab power
distribution wire harness and block (WP 0280).
b. If there is no continuity, replace circuit breaker 10 (WP 0242).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-1
DRAFT 0062FIELD LEVEL MAINTENANCE
FOAM TANK LEVEL INDICATOR GAUGE DOES NOT OPERATE PROPERLY
INITIAL SETUP:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
FOAM TANK LEVEL INDICATOR GAUGE DOES NOT OPERATE PROPERLY
Tools and Special ToolsLead Set, Test (WP 0398, Item 14)
Tool Kit, General Mechanics: Automotive
(WP 0398, Item 17)
References
TM 9-2320-325-14&P
WP 0004
WP 0007
WP 0008
WP 0010
WP 0022
WP 0118
WP 0121
WP 0175
WP 0189
References (continued)WP 0200
WP 0205
WP 0207
WP 0211
WP 0281
WP 0292
WP 0298
WP 0303
WP 0335
WP 0349
Equipment Conditions
Engine OFF (TM 9-2320-422-10)
Wheels chocked (TM 9-2320-422-10)
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0062-4
DRAFT 0062
HWT3105
Step 7. Pull battery disconnect switch to off position (WP 0007). Reconnect pump operators
panel wire harness level gauge connectors to original positions. Remove foam/water
tank level probe cover (WP 0189). Disconnect passenger side body wire harness foam
level probe connector from foam level probe adapter. Disconnect passenger side body
wire harness water level probe connector from water level probe adapter. Connect
passenger side body wire harness foam level problem connector to water level probeadapter. Push battery disconnect switch to on position (WP 0007). Check if pump
operators panel FOAM A level gauge E and F LEDs flash alternately.
If pump operators panel FOAM A level gauge E and F LEDs flash
alternately, go to Step 9.
Step 8. Pull battery disconnect switch to off position (WP 0007). Reconnect passenger side
body wire harness level probe connectors to original positions. Disconnect foam level
probe adapter from foam tank level probe (WP 0175). Disconnect water level probe
adapter from water tank level probe. Connect foam level probe adapter to water tank
level probe (WP 0175). Push battery disconnect switch to on position (WP 0007).
Check if pump operators panel FOAM A level gauge E and F LEDs flash alternately.
a. If pump operators panel FOAM A level gauge E and F LEDs flashalternately, replace foam level probe adapter (WP 0175).
b. If pump operators panel FOAM A level gauge E and F LEDs do not
flash alternately, replace foam tank level probe (WP 0175).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-5
DRAFT 0062
HWT3068
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelryand tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 9. Pull battery disconnect switch to off position (WP 0007). Disconnect passenger side
body wire harness foam level probe connector from water level probe adapter.
Reconnect passenger side body wire harness water level probe connector to water
level probe adapter. Push battery disconnect switch to on position (WP 0007). With a
test lead set, check for 4 to 6 VDC between wire 3850 (green) at passenger side body
wire harness foam level probe connector, terminal B to a known good ground.
If 4 to 6 VDC are present, go to Step 13.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-6
DRAFT 0062
HWT3072
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 10. Pull battery disconnect switch to off position (WP 0007). Remove passenger side light
bezel cover (WP 0335). Disconnect passenger side body wire harness 12-pin
connector. Push battery disconnect switch to on position (WP 0007). With a test lead
set, check for 4 to 6 VDC between wire 3850 (green) at passenger side body wire
harness 12-pin connector, terminal 1 to a known good ground.
If 4 to 6 VDC are present, repair wire 3850 in upper passenger side body
wire harness if repairable (TM 9-2320-325-14&P), or replace passenger
side body wire harness (WP 0298).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-7
DRAFT 0062
HWT3073
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 11. Pull battery disconnect switch to off position (WP 0007). Reconnect passenger side
body wire harness 12-pin connector. Disconnect main wire harness passenger side
body wire harness connector. Push battery disconnect switch to on position (WP 0007).
With a test set, check for 4 to 6 VDC between wire 3850 (green) at main wire harness
passenger side body wire harness connector, terminal 11 to a known good ground.
If 4 to 6 VDC are present, repair wire 3850 in lower passenger side body
wire harness if repairable TM 9-2320-325-14&P, or replace passenger side
body wire harness (WP 0298).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-8
DRAFT 0062
HWT3074
Step 12. Pull battery disconnect switch to off position (WP 0007). Disconnect main wire harness
pump operators panel 27-pin connector. With a test lead set, check for continuity
across main wire harness wire 3850 (green) from main wire harness pump operators
panel 27-pin connector, terminal 25 to main wire harness passenger side body wire
harness connector, terminal 11.
a. If there is continuity, repair wire 3850 in pump operators panel wire
harness if repairable (TM 9-2320-325-14&P), or replace pump
operators panel wire harness (WP 0303)
b. If there is no continuity, repair wire 3850 in main wire harness if
repairable TM 9-2320-325-14&P, or replace main wire
harness (WP 0292).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-11
DRAFT 0062
HWT3071
Step 15. Disconnect main wire harness pump operators panel 27-pin connector. With a test
lead set, check for continuity across main wire harness wire 3851 (purple) from main
wire harness passenger side body wire harness connector, terminal 13 to main wire
harness pump operators panel 27-pin connector, terminal 26.
a. If there is continuity, repair wire 3851 in pump operators panel wire
harness if repairable (TM 9-2320-325-14&P), or replace pump
operators panel wire harness (WP 0303).
b. If there is no continuity, repair wire 3851 in main wire harness if
repairable (TM 9-2320-325-14&P), or replace main wire
harness (WP 0292).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-12
DRAFT 0062
HWT3103
Step 16. Pull battery disconnect switch to off position (WP 0007). Remove cab instrument panel
B (WP 0205). Disconnect cab pump control wire harness foam level gauge connector
from cab FOAM A level gauge. Disconnect cab pump control wire harness water level
gauge connector from cab WATER level gauge. Connect cab pump control wireharness foam level gauge connector to cab WATER level gauge. Push battery
disconnect switch to on position (WP 0007). Check if cab WATER level gauge 1/4 and
3/4 LEDs flash alternately.
If cab WATER level gauge 1/4 and 3/4 LEDs do not flash alternately, replace
cab FOAM A level gauge (WP 0200).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-15
DRAFT 0062
HWT3102
Step 19. Disconnect main wire harness pump operators panel 27-pin connector. With a test
lead set, check for continuity across main wire harness wire 3852 (white) from main
wire harness main 3 connector, terminal N to main wire harness pump operators panel
27-pin connector, terminal 22.
a. If there is continuity, repair wire 3852 in pump operators panel wire
harness if repairable (TM 9-2320-325-14&P), or replace pumpoperators panel wire harness (WP 0303).
b. If there is no continuity, repair wire 3852 in main wire harness if
repairable (TM 9-2320-325-14&P), or replace main wire
harness (WP 0292).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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DRAFT 0062
END OF TASK
HWT3068A
Step 20. Pull battery disconnect switch to off position (WP 0007). With a test lead set, check for
continuity across wire 2740 (black) from passenger side body wire harness foam level
probe connector, terminal A to a known good ground.
If there is continuity, go to Step 13.
HWT3110
Step 21. Push battery disconnect switch to on position (WP 0007). Turn Service Drive Lights
On (TM 9-2320-422-10). Open passenger side stowage forward hatch T2 (WP 0008).
Check if passenger side stowage forward hatch T2 striplights operate.
a. If passenger side stowage forward hatch T2 striplights operate, repair
wire 2740 in upper passenger side body wire harness ifrepairable (TM 9-2320-325-14&P), or replace passenger side body
wire harness (WP 0298).
b. If passenger side stowage forward hatch striplights do not operate,
troubleshoot Passenger Side Stowage Compartment Striplight(s) Does
Not Operate (WP 0121).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0062-17/(18 blank)
DRAFT 0062FOLLOW-ON MAINTENANCE
1. Install cab instrument panel B if removed (WP 0205)
2. Install skid plate grille (WP 0349)
3. Remove wheel chocks (TM 9-2320-422-10)
END OF TASK
END OF WORK PACKAGE
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0063-2
DRAFT 0063
HWT0395
NOTE
Ensure system air pressure is at least 85 psi (586 kPa) during this procedure. System air
pressure is required to activate valves and operate bumper turret.
Do not engage PUMP PTO during this procedure, except when performing complete
system checks. Valve operations can be checked without water pump operation.
Valve operations can be checked by observing valve shaft rotation. Valves are open when
tabs or yellow paint tabs are aligned with fluid flow.
Step 1. If system air pressure is below 85 psi (586 kPa), start engine and allow system air
pressure to build to at least 85 psi (586 kPa) (TM 9-2320-422-10). Then shut off
engine (TM 9-2320-422-10). Remove pump house panel H (WP 0339). Push battery
disconnect switch to on position (WP 0007). Put bumper turret control POWER switch
to | (on) position (WP 0004). While an assistant pushes and holds bumper turret control
discharge switch (WP 0004), check if bumper turret valve operates to open position.
If bumper turret valve operates to open position, go to Step 15.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-3
DRAFT 0063
HWT0680
Step 2. Remove pump house panel K (WP 0339). Inspect red and blue air lines from valve
control manifold to bumper turret valve for kinks and damage.
If air lines are kinked or damaged, replace damaged air lines (WP 0374).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-4
DRAFT 0063
HWT3095
Step 3. Release bumper turret control discharge switch (WP 0004). Open pump house access
door assembly (WP 0009). Put FOAM SYSTEM switch to ON position. While an
assistant pushes and holds bumper turret control discharge switch, check if bumper
turret foam metering valve operates to open position. Flush foam system (WP 0022).
If bumper turret foam metering valve does not operate to open position, go
to Step 7.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-5
DRAFT 0063
HWT0678
WARNING
ICON 26,66
Be sure to wear proper eye protection to prevent injury or death. If air lines are
under pressure when they are disconnected, they can whip around and causeinjury to personnel. Caution should be exercised when disconnecting air line
fittings.
Be sure to wear proper eye protection to prevent injury or death. Air lines may be
under pressure when control valve is operated. If under pressure and air lines are
disconnected, air lines may whip around and cause injury to personnel. Caution
should be exercised when operating control valve with air lines disconnected.
NOTE
Air pressure is checked by disconnecting air lines at bumper turret valve and observing air
pressure escaping from air lines, when bumper turret valve is activated. Air will escape
from blue air line when bumper turret control discharge switch is pressed, and escape
from red air line when bumper turret control discharge switch is released. System air
pressure may drop below 85 psi (586 kPa) during this procedure.
Step 4. Release bumper turret control discharge switch (WP 0004). Disconnect air lines at
bumper turret valve. While an assistant pushes and releases bumper turret control
discharge switch, check if air pressure is present at bumper turret valve.
If there is air pressure, replace bumper turret valve (WP 0312).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-6
DRAFT 0063
HWT0677A
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 5. Connect air lines at bumper turret valve. Disconnect pump house wire harness bumper
turret control valve connector. While an assistant pushes and holds bumper turret
control discharge switch (WP 0004), with a test lead set, check for 22 to 28 VDC
between pump house wire harness wire 2837 (gray) at bumper turret control valve
connector, terminal 1 and a known good ground.
If 22 to 28 VDC are not present, repair wire 2837 in pump house wire
harness if repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
Step 6. Release bumper turret control discharge switch (WP 0004). Put bumper turret control
POWER switch to (off) position (WP 0004). Pull battery disconnect switch to off
position (WP 0007). With a test lead set, check for continuity across pump house wire
harness wire 2200 (black) from bumper turret control valve connector, terminal 2 to a
known good ground.
a. If there is continuity, replace bumper turret control valve (WP 0271).
b. If there is no continuity, repair wire 2200 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wire
harness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-7
DRAFT 0063
HWT2170
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before workingaround vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 7. Release bumper turret control discharge switch (WP 0004). Loosen four screws and
remove bumper turret control cover. Do not disconnect wires. While pushing bumper
turret control discharge switch (WP 0004), check if bumper turret control DISCHARGE
LED illuminates.
If bumper turret control DISCHARGE LED illuminates, go to Step 12.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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TM 9-2320-328-13&P-1
0063-8
DRAFT 0063
HWT0675
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before workingaround vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 8. Release bumper turret control discharge switch (WP 0004). Put bumper turret control
POWER switch to (off) position (WP 0004). Pull battery disconnect switch to off
position (WP 0007). Install bumper turret control cover and tighten four screws.
Remove cab instrument panel E (WP 0205). Disconnect cab instrument panel wire
harness bumper turret control connector. Check for continuity across cab instrument
panel wire harness wire 1640 (black) from cab instrument panel wire harness bumper
turret control connector, terminal 3 to a known good ground.
If there is no continuity, repair wire 1640 in cab instrument panel wireharness if repairable (TM 9-2320-325-14&P), or replace cab instrument
panel wire harness (WP 0279).
Step 9. Push battery disconnect switch to on position (WP 0007). Check for 22 to 28 VDC
between cab instrument panel wire harness wire 2848 (red) at bumper turret control
connector, terminal 1 and a known good ground.
If 22 to 28 VDC are present, replace bumper turret control (WP 0375).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-9
DRAFT 0063
HWT0674A
Step 10. Pull battery disconnect switch to off position (WP 0007). Remove cab instrument panel
panel A (WP 0205). Remove circuit breaker FS 1 (WP 0242). Check for continuity
across circuit breaker FS 1.
If there is no continuity, replace circuit breaker FS 1 (WP 0242).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-10
DRAFT 0063
HWT0673
Step 11. Install circuit breaker FS 1 (WP 0242). Disconnect cab instrument panel wire harness
cab power distribution wire harness connector. With a test lead set, check for continuity
across cab instrument panel wire harness wire 2848 (red) from cab instrument panel
wire harness cab power distribution wire harness connector, terminal 1 to bumper turret
control connector, terminal 1.
a. If there is continuity, repair wire 2848 in cab power distribution wire
harness if repairable (TM 9-2320-325-14&P), or replace cab power
distribution wire harness and block (WP 0280).
b. If there is no continuity, repair wire 2848 in cab instrument panel wire
harness if repairable (TM 9-2320-325-14&P), or replace cab instrumentpanel wire harness (WP 0279).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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TM 9-2320-328-13&P-1
0063-11
DRAFT 0063
HWT0676A
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before workingaround vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 12. Release bumper turret control discharge switch (WP 0004). Install bumper turret
control cover and tighten four screws. Disconnect main wire harness pump house wire
harness connector. While an assistant pushes and holds bumper turret control
discharge switch (WP 0004), with a test lead set, check for 22 to 28 VDC between main
wire harness wire 2837 (gray) at main wire harness pump house wire harness
connector, terminal 7 and a known good ground.
If 22 to 28 VDC are present, repair wire 2837 in pump house wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house wireharness (WP 0302).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-12
DRAFT 0063
HWT2065A
Step 13. Release bumper turret control discharge switch (WP 0004). Put bumper turret control
POWER switch to (off) position (WP 0004). Pull battery disconnect switch to off
position (WP 0007). Remove cab instrument panel E (WP 0205). Disconnect cab
instrument panel wire harness bumper turret control connector. With a test lead set,check for continuity across wire 2837 (gray) from cab instrument panel wire harness
bumper turret control connector, terminal 2 to main wire harness pump house wire
harness connector, terminal 7.
If there is continuity, replace bumper turret control (WP 0375).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-13
DRAFT 0063
HWT0671A
Step 14. Remove skid plate grille (WP 0349). Disconnect main wire harness main 2 connector.
With a test lead set, check for continuity across main wire harness wire 2837 (gray)
from main wire harness main 2 connector, terminal H to main wire harness pump house
wire harness connector, terminal 7.
a. If there is continuity, repair wire 2837 in cab instrument panel wire
harness if repairable (TM 9-2320-325-14&P), or replace cab instrument
panel wire harness (WP 0271).
b. If there is no continuity, repair wire 2837 in main wire harness if
repairable (TM 9-2320-325-14&P), or replace main wire
harness (WP 0292).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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TM 9-2320-328-13&P-1
0063-14
DRAFT 0063
HWT672
WARNING
ICON 26,66
Be sure to wear proper eye protection to prevent injury or death. If air lines areunder pressure when they are disconnected, they can whip around and cause
injury to personnel. Caution should be exercised when disconnecting air line
fittings.
Be sure to wear proper eye protection to prevent injury or death. Air lines may be
under pressure when control valve is operated. If under pressure and air lines are
disconnected, air lines may whip around and cause injury to personnel. Caution
should be exercised when operating control valve with air lines disconnected.
NOTE
Air pressure is checked by disconnecting air lines at bumper turret junction box and
observing air pressure escaping from air line. System air pressure may drop below 85 psi(586 kPa) during this procedure.
Step 15. Release bumper turret control discharge switch (WP 0004). Remove bumper turret
cover (WP 0376). Disconnect air line at bumper turret junction box. Check if air
pressure is present at bumper turret junction box.
If there is no air pressure, replace air line to bumper turret junction
box (WP 0374).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-15
DRAFT 0063
HWT2066
Step 16. Connect air line at bumper turret junction box. Set bumper turret control HORIZONTAL
SPEED to fast (fully clockwise) position (WP 0004). While an assistant operates
bumper turret control joystick to left and right positions (WP 0004), check if bumper
turret rotates to driver side and passenger side of vehicle.
If bumper turret does not rotate, go to Step 71.
Step 17. Put bumper turret control OSCILLATION switch to | (on) position (WP 0004). Set
bumper turret control OSCILLATION LIMITS control knobs to left and right limits for
system operations check (WP 0004). Check if bumper turret oscillates to limits
selected.
If bumper turret does not oscillate to limits selected or stops at hard stop, go
to Step 62.
Step 18. While an assistant adjusts bumper turret control HORIZONTAL SPEED control
(WP 0004), check if bumper turret oscillation speed varies when control is adjusted.
If bumper turret oscillation speed does not vary, replace bumper turret
control (WP 0375).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-16
DRAFT 0063
HWT2067
Step 19. Put bumper turret control OSCILLATION switch to (off) position (WP 0004). While an
assistant operates bumper turret control joystick in forward and rear positions
(WP 0004), check if bumper turret raises and lowers.
If bumper turret does not raise and lower, go to Step 39.
Step 20. While an assistant operates bumper turret control joystick in forward and rear positions
(WP 0004), check if bumper turret raises and lowers at a rate suitable for system
operations.
If bumper turret does not raise and lower at a rate suitable for system
operations, go to Step 61.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-17
DRAFT 0063
HWT2068
Step 21. Check bumper turret pattern sleeve for blockage and debris.
If bumper turret pattern sleeve is not free from blockage and debris, remove
blockage and debris, and go to Step 22.
NOTE
Bumper turret pattern sleeve shifts from stream-to-fog/fog-to-stream positions with air
pressure. Bumper turret pattern sleeve will shift from fog-to-stream at a slower rate assystem water pressure is increased.
Step 22. While an assistant pushes bumper turret control pattern control switch (WP 0004),
check if bumper turret pattern sleeve shifts to stream and fog positions.
If bumper turret pattern sleeve does not shift to stream and fog positions, go
to Step 24.
Step 23. While an assistant pushes bumper turret control pattern control switch (WP 0004),
check if bumper turret pattern sleeve shifts to stream and fog positions at a rate suitable
for system operations.
a. If bumper turret pattern sleeve shifts at a rate suitable for system
operations, fault corrected.
b. If bumper turret pattern sleeve does not shift at a suitable rate for
system operations, go to Step 38.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-19
DRAFT 0063
HWT2070A
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 26. Loosen four screws and remove bumper turret control cover. Do not disconnect wires.
While pushing bumper turret control pattern control switch to stream
position (WP 0004), check if bumper turret control STREAM LED illuminates.
If bumper turret control STREAM LED does not il luminate, replace bumper
turret control (WP 0375).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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TM 9-2320-328-13&P-1
0063-20
DRAFT 0063
HWT2070
WARNING
ICON 26,66
Be sure to wear proper eye protection to prevent injury or death. If air lines are
under pressure when they are disconnected, they can whip around and cause
injury to personnel. Caution should be exercised when disconnecting air line
fittings.
Be sure to wear proper eye protection to prevent injury or death. Air lines may be
under pressure when control valve is operated. If under pressure and air lines are
disconnected, air lines may whip around and cause injury to personnel. Caution
should be exercised when operating control valve with air lines disconnected.
NOTE
Air pressure is checked by disconnecting air line at bumper turret pattern sleeve and
observing air pressure escaping from air line when bumper turret control is activated.
Step 27. Install bumper turret control cover and tighten four screws. Disconnect air line at
bumper turret pattern sleeve extend port. Do not remove adjustment valve from sleeve.
While an assistant pushes bumper turret control pattern control switch to stream
position (WP 0004), check if air pressure is present at bumper turret pattern sleeve
extend port. Connect air line at bumper turret pattern sleeve extend port.
If air pressure is present, go to Step 38.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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TM 9-2320-328-13&P-1
0063-21
DRAFT 0063
HWT2071
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before working
around vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 28. Connect air line at bumper turret pattern sleeve extend port. While an assistant pushes
bumper turret control pattern control switch to stream position (WP 0004), check for 22
to 28 VDC between stream wire (black) at bumper turret junction box 9-pin terminal
strip, terminal 6 and a known good ground.
If 22 to 28 VDC are not present, go to Step 30.
Step 29. Put bumper turret control POWER switch to (off) position (WP 0004). Pull battery
disconnect switch to off position (WP 0007). Check connections at bumper turret
junction box 9-pin and 5-pin terminal strips for loose connections.
a. If connections are loose, tighten loose connections (WP 0377).
b. If connections are not loose, replace bumper turret junction box pattern
sleeve stream control valve (WP 0377).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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0063-22
DRAFT 0063
HWT2072
Step 30. Put bumper turret control POWER switch to (off) position (WP 0004). Pull battery
disconnect switch to off position (WP 0007). Disconnect bumper turret wire harnessbumper turret junction box connector. Check for continuity across bumper turret junction
box stream wire (black) from bumper turret junction box connector, terminal 7 to bumper
turret junction box 9-pin terminal strip, terminal 6.
If there is no continuity, repair bumper turret junction box stream wire in
bumper turret junction box wire harness if repairable
(TM 9-2320-325-14&P), or replace bumper turret junction box wire harness
(WP 0377).
HWT2072A
Step 31. Remove cab instrument panel E (WP 0205). Disconnect bumper turret wire harness
bumper turret control connector. With a test lead set, check for continuity across
bumper turret wire harness stream wire (black) from bumper turret wire harness bumperturret control connector, terminal 8 to bumper turret wire harness junction box
connector, terminal 7.
a. If there is continuity, replace bumper turret control (WP 0375).
b. If there is no continuity, repair bumper turret wire harness stream wire
in bumper turret wire harness if repairable (TM 9-2320-325-14&P), or
replace bumper turret wire harness (WP 0278).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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TM 9-2320-328-13&P-1DRAFT 0063
HWT2073A
WARNING
ICON 3
Remove rings, wristwatches, neck chains, and any other jewelry before workingaround vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry
and tools may short across electrical circuits and cause damage to equipment, or
severe burns or electrical shock to personnel.
Step 32. Loosen four screws and remove bumper turret control cover. Do not disconnect wires.
While pushing bumper turret control pattern control switch to fog position (WP 0004),
check if bumper turret control FOG LED illuminates.
If bumper turret control FOG LED does not illuminate, replace bumper turret
control (WP 0375).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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