1. OUTLINEMonitoring system consists of the monitor part and switch part.The monitor part gives warnings when any abnormality occurs in the machine and informs thecondition of the machine.Various select switches built into the monitor panel, and it acts as the control portion of the machinecontrol system.

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GROUP 3 MONITORING SYSTEM

Alternator level signalEngine oil pressure switchEngine tacho signalWork lightAir cleaner switchCoolant overheat sensorHydraulic oil temp. sensorCoolant level sensorFuel sendorCoolant temp. sensorWarming up signal

Switch

Monitor

Charge warning lampEngine oil warning lampTachometer (or clock)Work light lampAir cleaner warning lampCoolant overheat warning lampHydraulic oil temp warning lampCoolant level lampFuel gaugeCoolant temperature gaugewarming up lampFuel low level lamp

Mode selection switchAuto idle selection switchTravel speed switch

Mode selection lamp 1Mode selection lamp 2Travel speed pilot signal

Mode selection signal 1Mode selection signal 2

Auto idle selection signalEngine speed upsignalEngine speed downsignal

Battery(B+)Battery relay

Signal groundPower ground

OutputInput

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2. CLUSTER Monitor panel1)

barrpmTIME

F

HCE

FLSH

POWER MODE

SELECT

ENGINE SPEEDTRAVEL SPEED

AUTODECEL

H M

Fuel gauge

Battery charginglamp

Overheat warning lamp

Air cleanerwarning lamp

Hyd oil tempwarning lamp

Clock and tachometer

Engine coolanttemperaturegauge

Engine oilpressure warning lamp

Warming up lamp

Work lampindicator lamp

Fuel lowlevel lamp

Select switch

Automaticdecelerationswitch

Travel speedpilot lamp

Power modeswitch

Buzzer stopswitch

Engine speedcontrol switch

Coolant levelwarning lamp

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CLUSTER CHECK PROCEDURE

Start key : ONCheck monitor initial 3 secondsAll lamps light up.Buzzer sound.

Check monitor after 3 seconds : indicate machine conditionTachometer : 0rpmFuel gauge : All light up below appropriate levelEngine coolant temperature gauge : All light up below appropriate levelWarning lampIn case, the engine oil pressure lamp and battery charging lamp go on, but it is not abnormal.When engine coolant temperature below 30C, the warming up lamp light up.

Switch portionMode selection : S modeAuto decel LED : ON

Start of engineCheck machine conditionTachometer indicate at present rpmGauge and warning lamp : indicate at present condition.When normal condition : All warning lamp OFFMode selection : S modeAuto decel : ON(about 800rpm)Travel speed : Low(turtle)

When warming up operationWarming up lamp : ON3 seconds after engine started, engine speed increases to 1650rpm speed (Auto decel LED :ON)Others same as above

When abnormal conditionThe lamp lights up and the buzzer sounds.

2) (1)

(2)

a.b.

a.b.c.d.

a.b.c.d.e.

a.b.

a.

a.b.

3. CLUSTER CONNECTORCN-57 CONNECTOR

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1)

CN-56 CONNECTOR2)

Input/No. Signal output1 2 3 4 5 6 7 8 9

10 11 12

Engine speed downEngine speed upEngine coolant gaugeFuel gaugePower source(24V)Power source(B+)Travel speed pilot signalMode selection 2Mode selection 1Engine rpmPower groundSignal ground

outputoutputinputinput

-

-

inputoutputoutputinput

-

-

Input/No. Signal output1 2 3 4 5 6 7 8 9

10 11 12 13141516

Mode LED 1Mode LED 2NullNullNullCoolant level sensorBattery charging warningAuto decel selectionIllumination lampWork lightBuzzer signalHyd. oil overheat warningEngine oil pressure warningAir cleaner clog warningCoolant overheat warningWarming up

inputinput

-

-

-

inputinput

outputinputinputinputinputinputinputinput

output

8 7 6 5 4 3 2 1

16 15 14 13 12 11 10 9

CN-56

CN-57

6 5 4 3 2 1

12 11 10 9 8 7

Cluster

4. CLUSTER FUNCTIONTACHOMETER

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Tachometer displays the number of engine revolutions.Refer select switch for the selection and adjustment.

Clock displays the current time by electric digital timer(LCD).Refer select switch for the selection and adjustment.

1)

CLOCK2)

rpm

TIME

This gauge indicates the amount of fuel in the fuel tank.Segment A : Approximately 30(Warning lamp display)Segment B : Approximately 65Segment C : Approximately 100Segment D : Approximately 138Segment E : Approximately 176Segment F : Approximately 214Quantity of fuel tank : Approximately 250

FUEL GAUGE3)

F

E

This gauge indicates the temperature of coolant.Segment A : Approximately 40~60C(White)Segment B : Approximately 60~67C(Green)Segment C : Approximately 67~74C(Green)Segment D : Approximately 74~81C(Green)Segment E : Approximately 81~88C(Green)Segment F : Approximately 88~95C(Green)Segment G : Approximately 95~102C(Green)Segment H : Approximately 102~110C(Red)Segment I : Approximately 110C~ (Red)

ENGINE COOLANT TEMPERATURE GAUGE4)

HC

A

B

CD E F

A

B

CD E F

G

H

I

Green

Red

Green

Red

WhiteH

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This lamp is turned ON when the coolant is below LOW in thereservoir tank of radiator.Check if the coolant level is between FULL and LOW in thereservoir tank locating the side of radiator after opening theengine cover, and check if there is mixture of oil and coolant.

COOLANT LEVEL WARNING LAMP5)

Check if the charging lamp is OFF during engine operation. Ifthe lamp is turned ON, it is not charged.This lamp is ON before starting the engine, it is turned OFF afterstarting the engine. Check the battery charging circuit when thislamp comes ON.

BATTERY CHARGING LAMP6)

When the working light switch is turned ON, the working lightmounted on boom and the working light indicator lamp light ON.

WORKING LIGHT LAMP7)

This warning lamp operates and the buzzer sounds when thetemperature of hydraulic oil is over 105C.Check the coolant when the lamp is turned ON.

HYDRAULIC OIL OVERHEAT WARNING LAMP8)

This lamp is turned ON before starting the engine but turnedOFF after starting the engine as the pressure caused from theengine oil pump lubricates each part.

ENGINE OIL PRESSURE WARNING LAMP9)

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This lamp operates by the vacuum caused inside when the filterof air cleaner is clogged which supply air to the engine.Check the filter and wash or replace it when the lamp operates.

AIR CLEANER WARNING LAMP10)

This lamp is turned ON when the temperature of coolant is overthe normal temperature(110C)and lose the cooling function.Check the coolant when the lamp is ON.

OVERHEAT WARNING LAMP11)

This lamp is turned ON when the coolant temperature isbelow 30C.The automatic warming up is cancelled when the engine coolanttemperature is above 30C, or when 10 minutes have passedsince starting.

WARMING UP LAMP12)

The lamp of selected mode is turned ON by pressing the right switch( , ), when selecting the mode to use.H : This is used for heavy-duty work.S : This is used for ordinary work.L : This is used for light-duty work.F : This is used for light-duty work, especially for finishing

work.

MODE SELECTION SWITCH13)

POWER MODE

H FLS

This switch is used to actuate the auto-deceleration function.The engine speed is lowered by touching the switch whentemporary stop or stand-by for dump is required.

AUTO DECELERATION SWITCH14)

AUTODECEL

H

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This switch is to control the engine speed which is increased bypressing switch and decreased the engine speed by pressing

switch.

ENGINE SPEED CONTROL SWITCH15)

ENGINE SPEED

This switch is used to select the tachometer or clock.The switch is pressed, each function is selected by turns.The switch is pressed for 3 seconds, it is selected time adjustingfunction.Hour : Auto decel switchMinute : Buzzer stop switchAfter time set, the switch is pressed, it is returned clock.

SELECTION SWITCH(tachometer and clock)16)

SELECT

M

This buzzer sound is stopped by touching this buzzer stopswitch.This sound is continuous sound which comes out when awarning lamp on the cluster or warning indicator lights up.

BUZZER17)

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5. WARNING INDICATOR FUNCTION

P

Left turning lamp

Clutch oil pressurewarning lamp

Parking lockwarning lamp

Head lighthigh beam lamp Right turning lamp

Brake oil pressurewarning lamp

Ram lock warning lampWorking lockwarning lamp

This lamp flashes with sound when the RH multifunction switch ismove to forward position.The flashing sound(50dB) is generated from inside of the cab.

Left turning lamp

This lamp flashes with sound when the RH multifunction switch ismove to backward position.The flashing sound(50dB) is generated from inside of the cab.

Right turning lamp

When the head light is the lamp flashes.It also lights up if the head light switch is turned ON.When passing other machines ahead, this lamp must beused for a few seconds to give other machines warning for afew seconds.

Head light high beam lamp

1)

2)

3)

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The lamp lights ON when the oil pressure of the transmission drops.When the lamp is ON, stop the engine and check the transmissionsystem.

Clutch oil pressure warning lamp

The lamp lights ON when the oil pressure of service brake dropsbelow the normal range.When the lamp is ON, stop the engine and check for its cause.Do not operate until any problems are corrected.

Brake oil pressure warning lamp

When the parking brake is actuated, the lamp lights ON.Check the lamp is OFF before driving.

Parking lock warning lamp

P

This lamp lights ON when the parking switch is in the position ofworking and the ram lock lamp lights ON at the same time.Refer to parking switch at page 3-13 for details.

Working lock warning lamp

When the oscillating work is not necessary as the machine is inoperation or parked, a front axle is fixed and oscillating is lockedwith the lamp lights ON by operating the ram lock switch.Also, the lamp lights ON when the parking switch is in the position ofparking or working.

Ram lock warning lamp

4)

5)

6)

7)

8)