Plano Hyd 793f
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Transcript of Plano Hyd 793f
INTERACTIVE SCHEMATIC
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Cover PageInformation
SchematicMachine Views
Component TableTap Table
Fluid Power Symbols
Electrical Symbols
Front Frame
Rear Frame
Tap Views
Features
Options
Bookmarks X
EC-C3EC-C2 E-C60
EC-C1
E-C61
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©2012 Caterpillar, All Rights Reserved Printed in U.S.A.
KENR8398-04April 2012
793F Off-Highway TruckHydraulic SystemSND1-UPSSP1-UP
Page 1 of 2COMPONENT LOCATION
Description PartNumber
MachineLocation
SchematicLocation
Accumulator Gp - Brake (ACC1) 291-1546 1 I-5Accumulator Gp - Brake (ACC2) 291-1546 2 I-4Accumulator Gp - Steering 308-2856 3 F-11Breather 157-7911 4 D-7Connector - Orifice 311-6676 6 G-4, G-5Cylinder Gp - Telescoping, Hoist 295-5708 7 H-12Filter - Oil, Adv Eff., Breather 4T-6788 8 D-5Filter Gp - Case Drain 290-2569 9 D-7Filter Gp - Fan / Steering Return 339-9706 10 A-8Filter Gp - Oil, Brake 290-2567 11 F-5Filter Gp - Oil, Hoist / Brk Cooling 339-9702 12 I-9Fitting - Orifice 1 8X-7851 13 G-4, G-6Fitting - Orifice 2 8X-7851 14 F-8Fitting - Orifice 3 8X-7851 15 E-11Motor Gp - Fan 240-7790 16 E-9Pump / Motor Gp - Brake Release 5T-1060 17 I-8Pump Gp - Fan / Steering 291-7263 18 B-9Pump Gp - Hoist / Brake 310-4846 19 F-6Pump Gp - Metering (HMU) 9T-1318 20 D-3Screen - Pmp Brng Flushing Return 247-8298 21 C-7Screen Gp - Hoist Lines 6E-5472 22 H-10Slack Adjustor Gp - Front 205-0560 23 G-2Slack Adjustor Gp - Rear 205-0560 24 G-14Valve Gp - Check 1 332-7350 25 C-7Valve Gp - Check 2 6E-4701 26 I-5Valve Gp - Check, Brk Rel Pump 123-4750 27 I-8Valve Gp - Check, Brk Rel, El Pump 123-4750 28 I-4Valve Gp - Cntrl, Hoist / Brk Cooling 247-1437 29 I-12Valve Gp - Makeup 183-7170 30 E-9Valve Gp - Sol / Mnfld 198-6577 31 F-8Valve Gp - Sol / Rlf, Str Acc. 272-9849 32 E-11Valve Gp - Steering 9T-8931 33 F-3
Control Gp - Foot Brake 315-5037 34 H-3Cylinder Gp - Steering 9T-8912 35 F-3
Mechanical Drive (Hydraulic Arrangement 278-8418)
Page 2 of 2COMPONENT LOCATION
Description PartNumber
MachineLocation
SchematicLocation
Filter Gp - Oil, RAX 333-6434 36 F-12Manifold Gp - Control, RAX 299-3258 37 E-12Motor Gp - Brake Cooling 198-6041 38 C-4Motor Gp - RAX 202-9940 39 D-12Pump Gp - Brake Cooling 197-8885 40 C-5Pump Gp - RAX 214-1555 41 D-12Screen As - Hydr. Oil Cooler 149-2754 42 I-9Tank Gp - Hydraulic 288-5701 43 B-5Valve / Mtg Gp - Cntrl, Brks, Std Whl 285-5630 44 H-4Valve / Mtg Gp - Cntrl, Brks, XL Whl 283-9559 45 H-4Valve Gp - Relief, Brake Oil Cooler 6E-5855 46 D-5Valve Gp - Traction Control 222-4744 47 I-7
Accumulator Gp - Steering (PED) 308-3556 48 F-11Cooler Gp - RAX Oil Cooler 320-8196 49Motor Gp - RAX Oil Cooler Fan 307-1504 50Plug As - Rear Axle Cooler 242-7114 51 F-12Valve Gp - Press. Rdc, Rad Fan Cntrl 226-0835 52 D-9
Core As - Oil Cooler, Brake 290-2729 53 J-8Core As - Oil Cooler, Brake 336-9641 54 J-9Core Gp - Oil Cooler, Steering 199-6683 55 A-8Sensor Gp - Press., Brake Pump 221-3405 56 I-5Sensor Gp - Press., Brk Acc. (ACC1) 221-3405 57 I-5Sensor Gp - Press., Brk Acc. (ACC2) 221-3405 58 I-3Sensor Gp - Press., Differential Oil 221-3415 59 F-12Sensor Gp - Press., Rr Brk Oil, LH 221-3410 60 I-7Sensor Gp - Press., Rr Brk Oil, RH 221-3410 61 E-9Sensor Gp - Press., Steering Acc. 221-3405 62 E-11Sensor Gp - Press., Steering Pump 221-3405 63 F-8Sensor Gp - Speed, Clng Pmp Drive 186-0131 64 C-5Sensor Gp - Speed, Fan 186-0131 65 H-7Switch As - Press., Serv. Brake (Frnt) 128-5091 67 G-4Switch As - Press., Serv. Brake (Rear) 128-5091 68 G-6
Attachments
Misc. Ref.
G-11G-11
TAP LOCATION
Description TapNumber
SchematicLocation
Brake Pump Filter Outlet Pressure R F-5
Brake Pump Pressure N F-6
Case Drain Return Filter Pressure P2 C-7
Front Slack Adjuster Pressure I1 G-1
Front, Left Parking Brake Release Press. J1 J-1
Front, Right Parking Brake Release Press. J2 D-1
Hoist Control Pilot Pressure L1 H-11
Hoist Control Pilot Pressure L2 G-11
Hoist Pump 1 Pressure M1 F-6
Hoist Pump 2 Pressure M2 F-6
Left, Front Wheel, Brake Cooling Input Press. K1 J-2
Left, Front Wheel, Brake Cooling Output Press. K2 I-1
Left, Rear Wheel, Brake Cooling Input Press. K5 J-13
Left, Rear Wheel, Brake Cooling Output Press. K6 I-14
Left, Rear Wheel, Traction Pilot Pressure S1 I-7
Purge Point for Comissioning P1 H-3
Radiator Fan Pressure F D-9
RAX System Pressure Q E-12
Rear Slack Adjuster Pressure I2 G-14
Rear, Left Parking Brake Release Press. J3 J-14
Rear, Right Parking Brake Release Press. J4 B-14
Right, Front Wheel, Brake Cooling Input Press. K3 E-2
Right, Front Wheel, Brake Cooling Output Press. K4 D-2
Right, Rear Wheel, Brake Cooling Input Press. K7 C-14
Right, Rear Wheel, Brake Cooling Output Press. K8 B-14
Right, Rear Wheel, Traction Pilot Pressure S2 H-7
Secondary Retract Accumulator Pressure H I-5
Service Brake Acummulator Pressure G I-4
SOS, Brake Actuation C I-6
SOS, Hoist and Brake Cooling B I-9
SOS, Strg, Fan, Drive A E-10
Steering Accumulator Pressure E E-3
Steering Pump Pressure D F-8
Supply Pump Pressure P3 C-9
FLUID POWER SYMBOLS
ONE POSITION TWO POSITION THREE POSITION
VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL
LINES CROSSING LINES JOINING
TWO-WAY THREE-WAY FOUR-WAY
SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION(FIXED)
2-SECTION PUMP
MAIN AUX.
SPRING(ADJUSTABLE)
VARIABILITY LINE RESTRICTION(VARIABLE)
LINE RESTRICTIONVARIABLE and PRESSURE
COMPENSATED
PRESSURECOMPENSATION
PUMP: VARIABLE andPRESSURE COMPENSATED
ENERGY TRIANGLESHYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONERPUMP or MOTOR
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLSRELEASED PRESSURE
EXTERNAL RETURN INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED COMPLETE INTERNALSUPPLY PRESSURE
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOIDor MANUAL
SOLENOIDand PILOT
SOLENOID and PILOT or MANUAL
COMBINATION CONTROLS
SOLENOID SERVO THERMAL DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASICSYMBOL
SPRINGLOADED
CHECK VALVES
TWOPOSITION
INFINITEPOSITIONING
FLOW IN ONEDIRECTION
FLOW ALLOWED INEITHER DIRECTION
THREEPOSITION
CROSSFLOW
PARALLELFLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P TSHIFTED POSITION INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOTCONTROLLED
ELECTRICAL SYMBOLSHydraulic Symbols (Electrical)
325-AG135 PK-14
Circuit IdentificationNumber
Wire Color Wire Gauge
Harness identification codeThis example indicateswire 135 in harness "AG".
325-PK-14
Wire Gauge
Wire Color
Circuit Number Identification
Wire Number Identification Codes
Current Standard
Previous Standard
Electrical Schematic Example Hydraulic Schematic Example
325-PK
Wire ColorCircuit Number Identification
B A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer(Fluid)
Transducer(Gas / Air)
G
Generator
Electrical WirePressure Switch
MElectric Motor
Pressure Switch (Adjustable)
Temperature Switch
PressureSymbol
TemperatureSymbol
LevelSymbol
FlowSymbol
Electrical Symbols (Electrical)
T
Components are shown installed on a fully operable machine with the key and engine off, transmission shifterin neutral and with parking brake set.Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
SCHEMATIC PART NUMBER: 278-8439, CHANGE: 00, VERSION: -MEDIA NUMBER: KENR8398-04 THIS SCHEMATIC IS FOR THE 793F OFF-HIGHWAY TRUCK HYDRAULIC SYSTEM
A
B
C
D
E
F
1234567891011121314
G
H
I
J
1234567891011121314
A
B
C
D
E
F
G
H
I
J
LINE PATTERNS
Drain / Return Lines
Component Group
Air Line
Pilot / Load Sensing Pressure
Pressure Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)YY
(52) VALVE GP - CONTROL138-1234
Callout Number(Machine Location from
Component LocationsTable)
ComponentName
Part Number
HYDRAULIC CIRCUIT COLOR DESCRIPTIONSBRAKE RELEASE PUMP AND CIRCUIT
DRAIN / BRAKE COOLING
HOIST PUMP AND CIRCUITSTEERING CIRCUITSUPPLY LINEFAN PUMP AND CIRCUITBRAKE PUMP AND CIRCUITSUPPLY PUMP AND CIRCUITPARKING BRAKE CIRCUITREAR AXLE LUBE PUMP AND CIRCUITDRAIN / RETURN LINE
HIGH PRESS.RLF
LOW PRESS.RLF
DUAL STAGE SIGNAL SPOOL
SIGNALORIFICE #2
SIGNALORIFICE #1
ORIFICE
COUNTERBALANCEVALVE CARTRIDGE
ROD END VENTSLOT ACROSS
STEM
SOS
LEFT REAR
RIGHT REAR
LEFT FRONT
RIGHT FRONT
MAIN RELIEF DUMP SPOOL
AP
B
SW
M1U B
REAR AXLE BANJO HOUSING SUMPSEE POWERTRAIN SCHEMATIC
FINALDRIVE DIFFERENTIAL
HP
P
LS HT
T
EF
RL
CRCL
BRAKE SYSTEM, STEER AND FAN, HOIST AND BRAKE COOLING, MECHANICAL DRIVE: RM757 and RM952
M
TOFAN / STEERINGPUMP
B
I2
K6
J3
K8 J4
K7
K5
P2
H
FK4
K3
I1
K1
Q
P1
S1
S2
P3
D
K2
R
J2
J1
G
E
A
L2
L1
N M1 M2
C
AC
C2
BC
D
HO
IST
TCS
PS
2
AC
C1
PS
1
RA
X
T2
TANK
PB
PS5 R SUPPLY PS4 F
FSB
T1
TSB
PS3
P
T
A
SV3
FL1PR1
SQ1
RV1
LE1
SV2
OR1
CV1 CV2
PD1
0R5 0R6
HF1 SV1
0R2 0R9
0R3 0R7
PD2
SH1
HF2 PD3
PLUG1
HF3
SH2
0R4 0R8
(1) ACCUMULATOR GPBRAKE (ACC1)
291-1546 (2) ACCUMULATOR GPBRAKE (ACC2)
291-1546
(4) BREATHER157-7911
(7) CYLINDER GPTELESCOPING
HOIST295-5708
(8) FILTER OILBREATHER
4T-6788
(9) FILTERCASE DRAIN
290-2569
(10) FILTER GPFAN/ STEERRETURN339-9706
(11) FILTER GPOIL BRAKE
290-2567
(12) FILTER GPOIL HOIST / BRK
COOLING339-9702
(13) FITTING ORIFICE 1A.C. ONLY8X-7851
(16) MOTOR GPFAN
240-7790
(17) PUMP / MOTOR GPBRAKE RELEASE
5T-1060
(18) PUMP GPFAN / STEERING
291-7263
(19) PUMP GPHOIST / BRAKE
310-4846
(20) PUMP GPMETERING
(HMU)9T-1318
(21) SCREENPUMP BEARINGFLUSHING RET247-8298
(22) SCREEN GPHOIST LINES6E-5472
(23) SLACK ADJ GPFRONT
205-0560
(24) SLACK ADJ GPREAR
205-0560
(25) VALVE GPCHECK 1332-7350
(26) VALVE GPCHECK 26E-4701
(27) VALVE GPCHECK BRK REL
EL PUMP123-4750
(28) VALVE GPCHECKBRK REL123-4750
(29) VALVE GPCONTROL
HOIST / BRKCOOLING247-1437
(30) VALVE GPMAKEUP183-7170
(31) VALVE GPSOL/ MNFLD198-6577
(32) VALVE GPSOL / RLFSTR ACC272-9849
(33) VALVE GPSTEERING
9T-8931
(6) CONNECTORORIFICE311-6676
(34)CONTROL GPFOOT BRAKE315-5037
(35) CYLINDER GPSTEERING
9T-8912, 205-0560
(36) FILTER GPOIL, RAX333-6434
(37) MANIFOLD GPCONTROL RAX299-3258
(38) MOTOR GPBRAKE COOLING198-6041
(39) MOTOR GPRAX202-9940
(40) PUMP GPBRAKE COOLING
197-8885
(41) PUMP GPRAX214-1555
(42) SCREEN ASHYDR. OIL COOLER
149-2754(Extra Retarding Only)
(43) TANK GPHYDRAULIC
288-5701
(44) VALVE / MTG GPCONTROL BRAKES (STD WHL)285-5630(45) VALVE / MTG GPCONTROL BRAKES (XL WHL) NOT SHOWN283-9559
(46) VALVE GPRELIEF BRAKE
OIL COOLER6E-5855
(47) VALVE GPTRACTION CONTROL
222-4744
(3) ACCUMULATOR GPSTEERING308-2856
(48) ACCUMULATOR GP (PED)308-3556
(51) PLUG ASREAR AXLE CLR242-7114
(52) VALVE GPPRESS RDC. RAD.
FAN CNTRL226-0835
(53) CORE ASOIL COOLERBRAKE290-2729(Extra Retarding Only)
(54) CORE ASOIL COOLER
BRAKE336-9641
(55) CORE GPOIL COOLERSTEERING199-6683
(56) SENSOR GPPRESS. BRAKE
PUMP221-3405
(57) SENSOR GPPRESS. BRK (Acc1)
221-3405 (58) SENSOR GPPRESS. BRK (ACC2)221-3405
(59) SENSOR GPPRESS. DIFF. OIL221-3415
(60) SENSOR GPPRESS. RR BRK OIL, LH221-3410
(65) SENSOR GPPRESS. RR BRK OIL, RH
221-3410
(62) SENSOR GPPRESS. STEER ACC.
221-3405
(63) SENSOR GPPRESS. STEER ACC
221-3405
(64) SENSOR GPSPEED
COOLINGPUMP DRIVE
186-0131
(61) SENSOR GPSPEED, FAN
186-0131
(68) SWITCH ASPRESS. SERV. BRK
(REAR) A.C. ONLY128-5091
(67) SWITCH ASPRESS. SERV. BRK (FRNT)128-5091
(14) FITTINGORIFICE 28X-7851
(15) FITTINGORIFICE 3
8X-7851
(50) MOTOR GPRAX OIL CLR FAN
307-1504(49) COOLER GPRAX OIL CLR
320-8196
MECHANICALPUMP DRIVE
(6) CONNECTORORIFICE311-6676
(13) FITTINGORIFICE 1A.C. ONLY
8X-7851
T1 T2 R G2 Ma Mb B G1 R T2 T1
Qmin Qmax
M1 S M1
Qmax Qmin
A U2SL
L1U1
TOMECHANICAL DRIVE
RAISE HOLD SNUB FLOAT LOWERSpool sections by color =
BRAKE COOLING
B
K8
K7
K4
K3
K6
K5
K2
K1
64
54
5346
42
40
3812
BRAKE CONTROL
Left Side, Center of Chassis
G
H
P1 R58
57 5645 44
28
26
13 11
6
2
1
FAN CIRCUIT
Viewed From Front
F 65
55
30 16
10
HOIST CONTROL
Viewed from Rear and Above
L2
L1
29
22
7
7
HYDRAULIC OIL TANK
P2
43
25 9
8
4
PUMPS AND DRIVE
BrakePump
FanPump
SteeringPump
HoistPump
PumpDriveP3
M2 M1 N
19
18
RAX OIL COOLER
D
Q
63
59
51
50 49
4139 3736
31
SERVICE AND PARKING BRAKES
J4J3
I2
J2 J1
I1
34
2724
23
21
17
STEERING CONTROL
VIEW A-A
E
A 62
48
35
35
33 32
31
20
15
14
3
TRACTION CONTROL
Left Side, Center of Chassis, Inside of Frame
S2
S1
67
61
60
47