JAC Trucks. Service 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
224
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.
226
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
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