JAC Trucks. Manual — part 69

TROUBLE SHOOTING院

possible problems

analysis of reasons

solutions

Operational valve
is in the lifting po鄄
sition, but the car鄄
riage is not.

1.power take-off doesn't joggle
2.insufficient oil amount in the oil tank
3.malfunction of the control system

荫

lack of voltage or obstructed circuit

荫

lack of air pressure or air leakage

荫

electromagnetic valve malfunction

4.oil leakage of the hydraulic system
5.too much inner leakage of gear pump
6.directional control valve isn't shut
7.the plug doesn't recover the original position
when in the limited valve
8.too much leakage in the oil tank
9.the operational valve doesn't work

1.solve the gear engagement problems, repair or
change the power take-off.
2.put the oil in the tank according to the rules
3.solve the control system problems

荫

fully charge or connect the circuit

荫

inflate the system or repair the leakage parts.

荫

repair or change the electromagnetic valve

4.repair the oil leakage parts
5.change the gear pump
6.cheek if the plug is blocked up and adjust it
7.check and adjust the post guide and plug
8.change the gasket set or oil tank
9.repair or change the operational control valve

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OWNER爷S MANUAL

JAC HEAVY DUTY TRUCK

possible problems

analysis of reasons

solutions

The carriage is not
lifted to the proper
position or doesn't
stop after being lift鄄
ed

1.shortage of hydraulic oil amount
2.the directional control valve isn't fully shut
3.one-way valve leakage
4.valve moves up and down when in limited
valve
5.inner leakage of the gear pump

1.fill up with the hydraulic oil
2.check, maintain and change for new ones.
3.check and change for new ones.
4.refit the limited valve.
5.change the gear pump.

The carriage moves
up and down when
lifted or is lifted too
slowly

1.air in the hydraulic system
2.the directional control valve isn't fully shut
3.some inner leakage of the gear pump
4.small holes on the oil tank filter are blocked up
5.one-way valve is blocked up
6.shortage of hydraulic oil

1.re-lift to let out the air
2.adjust the directional control valve
3.change the gear pump
4.check and change the oil filter and the hy鄄
draulic oil
5.repair and change the one-way valve
6.fill up with the hydraulic oil

225

possible problems

analysis of reasons

solutions

The carriage cannot
descend

1.binding of the directional control valve plug
2.the directional control valve cannot open the
valve
3.leakage of the gas way leading to the de鄄
scending position of the directional control valve
or shortage of air pressure or malfunction of the
electric control valve circuit

1.refit the plug and clean the filth
2.repair the air leakage parts
3.check and repair the air way and circuit

The carriage de鄄
scend automatically
or too quickly or too
slowly

1.the directional control valve isn't fully shut
2.one-way valve isn't airproof
3.serious inner leakage of the hydraulic cylinder
4.the directional control valve retrieves oil too
slowly or too quickly

1.check and change the oil if it's dirty
2.check, repair and change
3.check and repair the gasket sets or change
the hydraulic cylinder
4.adjust the oil retrieving speed of the direction鄄
al control valve

direc tional control
valve leakage

1尧the oil jam in the hydraulic oil tank
2尧the gasket set wears off
3尧the valve fixed bolt loosens

1尧change the hydraulic oil and clean the plug
2尧change the gasket sets
3尧fasten the bolt

hydraulic cylinder
leakage

1尧oil-proof or gasket set wears away
2尧the scrapes on the surface of oil tank

1尧change the oil-proof or gasket sets
2尧check, repair and change for new ones.

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OWNER爷S MANUAL

JAC HEAVY DUTY TRUCK

INSTRUCTIONS OF SIDE-DUMP TIPPER

1.Working Principles Graph院

油路

Oil way

气路

Air way

举升缸

Lift cylinder

多路阀

multi-pathway valve 限位阀 limit valve

取力器

power take-off 气控阀 air-control valve

储气筒

air-reserve tank

227

2.Instructions Of Usage院

荫

After the auto is fully stopped, pull out the right-side cotter pin, take out the right-side dumping pin and open the

door manual handle(left-side short lock) 曰

荫

Back on the driving seat, step down the clutch pedal, and shift into the low gear (1st and 2nd gear, similarly here鄄

inafter), open the power take-off at the "on" position, loose the clutch pedal and then the power take-off begins to work.

荫

Lift up the air control valve handle of the operational oil tank (assembled valve) to the "lift" position, and after the lifting

movement, all the goods are downloaded(heavy goods are not allowed to be dumped directly here, otherwise accidents
may happen). Then retrieve the handle to the "descend" position. Last, after the carriage goes back in place, shift the
handle to the "pause" position, the gear to the "neutral" gear, and put the power take-off control handle to the "off" posi鄄
tion.

荫

Put in the right-side dumping pin and the right-side cotter pin, put back the door manual handle (left-side short lock

bar), and only in this way can the tipper drive.
3. Notice:

荫

Before shifting the power take-off control handle to the "off" position, be sure that the gear is put in the "neutral" posi鄄

tion to avoid the moving on of the tipper and possible accidents.

荫

Before the lifting, be sure to open the left-side short lock bar!!!

荫

The tipper is forbidden to dump heavy loads in case accidents may happen.

荫

Please follow the rules mentioned before carefully. The company will not be responsible for the accidents disobeying

these rules.

228

OWNER爷S MANUAL

JAC HEAVY DUTY TRUCK

229

VEHICLE SPECIFICATION

230

DUMP TRUCK SPECIFICATION

Model

6伊4

Engine

Model
Displacement(cc)
Max output power渊Hp/rpm冤
Max torque渊N.m/rpm冤

Transmission

Model

9JS150T-B+QH50

US Eaton Technology with synchronizer

Gear position

8 6 4 2 L

7 5 3 1 R

Clutch

Mode

Single, dry plate, diaphragm spring

Rear Axle

Model

Steyr Technology渊5.73)

Main
parameter

Overall Dimension渊mm冤

8960伊2560伊3330

Rear cargo dimension渊mm冤

5660伊2300伊1350

Wheel base渊mm冤

4350+1350

Tread渊mm冤

2040/1860

Suspension arm渊mm冤

1495/1765

Curb weight渊Kg冤

14400

Rated payload渊Kg冤

28500

9726

360/2400

1460/1450

WD615.46with BOSCH pump

Drive mode

HFC3251KR1

Half Height Roof

Cab袁tilt cab

Tire

12.00-20/12.00R20/12.00R22.5

GVW渊Kg冤

42900

Max speed渊Km/h冤

80

Radius of turning渊m冤

10

6伊4

RT11509C+QH50\9JS150T-B+QH50

US Eaton Technology

8 6 4 2 L

7 5 3 1 R

Single plate,dry,screw spring

Steyr Technology(5.73/6.72)

8265/8355伊2495伊3500
5400/5600伊2300伊1500

3690+1350

2040/1860

1495/1730,1495/1820

13350/13580
26650/26420

WD615.50

9726

290/2200

1160/1500

HFC3251KR1

11.00R20/11.00-20尧12.00-20/12.00R20

40000

80

9

HFC3251KR1

6伊4

L340 20 (CUMMINS made in China)

8900

340/2200

1350/1400

ZF 16S 1650

ZF made in China

1 3 5 7

R 2 4 6 8

SACHS Single plate,dry,diaphragm

spring,SACHS made in Germany

Steyr Technology(4.8)

8265/8355伊2495伊3500
5400/5600伊2300伊1500

3690+1350

2040/1860

1495/1730,1495/1820

13350/13580
26650/26420

40000

80

9

12.00-20/12.00R20

OWNER爷S MANUAL

JAC HEAVY DUTY TRUCK

Model

6伊4

Engine

Model
Displacement(cc)
Max output power渊Hp/rpm冤
Max torque渊N.m/rpm冤

Transmission

Model

ZF 16S 221

ZF made in Germany

Gear position

1 3 5 7

R 2 4 6 8

Clutch

Mode

SACHS Single plate,dry,

diaphragm spring,SACHS made in Germany

Rear Axle

Model

Steyr Technology渊4.8)

Main
parameter

Overall Dimension渊mm冤

9395伊2495伊3330

Rear cargo dimension渊mm冤

/

Wheel base渊mm冤

4350+1350

Tread渊mm冤

2040/1860

Suspension arm渊mm冤

1495/2200

Curb weight渊Kg冤

14400

Rated payload渊Kg冤

28500

10800

440/1800

2100/1200

ISM440E 20(CUMMINS made in China冤

Drive mode

HFC3251KR1

Half Height Roof

Cab袁tilt cab

Tire

12.00R22.5

GVW渊Kg冤

42900

Max speed渊Km/h冤

80

Radius of turning渊m冤

10

6伊4

ZF 16S 1950

ZF made in China

1 3 5 7

R 2 4 6 8

SACHS Single plate,dry,

diaphragm spring,SACHS made in Germany

Steyr Technology渊4.8)

8960伊2560伊3330
5660伊2300伊1350

4350+1350

2040/1860
1495/1765

14400
28500

ISME 20(CUMMINS made in China冤

10800

380/1800

1825/1200

HFC3251KR1

12.00R22.5

42900

80
10

HFC3251KR1

6伊4

WP10.290

9.726

290/2200

1160/1200-1600

RT11509C+QH50

US Eaton Technology

8 6 4 2 L

7 5 3 1 R

Single plate,dry,screw spring

Steyr Technology(5.73/6.72)

8265/8355伊2495伊3500
5400/5600伊2300伊1500

3690+1350

2040/1860

1495/1730,1495/1820

13350/13580
26650/26420

40000

80

9

11.00R20/11.00-20尧12.00-20/12.00R20

231