JAC HFC4181KR1 Owner's Manual page 105

OWNER ' S MANUAL
JAC HEAVY DUTY TRUCK
Ⅴ.General malfunction and troubleshooting
General malfunction Cause
Feeding agitating is not symmetrical, then
Feeding funnel blockage
feeding of "raw material" is too fast
1.The oil pump supply is not enough, which
results in the powerless
Agitating tank can't rotate.
2.The hydraulic oil is too dirty, inner leakage
inside the manual servo valve or damping
orifice blocks, which causes the hydraulic
pump pressure is not enough, inner leakage
of the hydraulic pump
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Troubleshooting method
Dredge it with tool, and control the speed of
feeding
Change the filter, check the oil pipe, check
whether the fuel inside is enough, and check
whether there is air leakage on the intake pipe
of fuel tank
Change the hydraulic oil and clean the hy鄄
draulic oil tank, hydraulic pump, hydraulic
motor and change the "O" ring
General malfunction Cause
3.The inner pin shaft of the manual
Agitating tank can't rotate. servo valve is broken, hydraulic oil
pipe is broken and it's out of control
The hydraulic oil is too dirty, the oil in鄄
Agitating tank rotation
take is not enough
is too slow
Oil leakage in the hydraulic system
Troubleshooting method
If the malfunction can't be solved immediately
when the concrete is already put into the agitating
tank, the troubleshooting method 1.open the check
port of the agitating tank, clean the concrete to the
outside with hoe and shovel, meanwhile wash it
with high pressure water, and don't let the concrete
be solid on the tank. Then, check the manual servo
valve, hydraulic oil pipe and control mechanism;
method 2, conducting the hydraulic oil from the
other helpful agitating truck to the motor of failure
truck for discharging the concrete with three emer鄄
gency oil pipes, after the method is same as above
Clean or change intake filter of hydraulic oil tank,
and change the hydraulic oil at the same time
Repair or change the gasket or smear sealant glue
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