EP Equipment CPD30L1-B, Руководство по обслуживанию

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REV. 05/2020
TROUBLESHOOTING
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Table 9.1 Troubleshooting of Common Faults (continued)
Fault Fault Symptom Troubleshooting Order * Troubleshooting Measures
Lift Failure 3. Slow Lifting of
Vehicle
a. Overload
b. Hydraulic pipeline leakage
c. Valve failure:
Gear pump wear, internal
leakage occurs
Insufficient relief valve pressure
or blocked
1) Refer to the rated capacity
marked on the nameplate;
2) Check the pipe and hydraulic
components for oil leaks;
3) Wash or replace the valve body
4. Slow Lowering of
Vehicle
a. Solenoid valve blocking
b. Valve body failure: throttle valve
failure or blocked
1) Wash or replace the solenoid
spool
2) Wash or replace the valve body
5. Unstable Lifting /
Lowering of Vehicle
a. Chain loosening;
b. Poor lubrication between steel
channel and rollers;
c. Improper adjustment of rollers,
or blocked.
1) Adjust the chain tension;
(see Appendix A1-1.1)
2) Check if the steel channel
grease is normal, clean and re-
lubricate steel channel and
rollers;
3) Adjust the side roller spacing
through roller screw; or replace
the roller.
* Under the circumstances of normal lifting and lowering, if failure occurs to any of other
hydraulic actions (forward/backward shifting, forward/backward tilting and left/right shifting),
perform troubleshooting to the corresponding control switch and its control circuit.
Steering Fault 1. The vehicle cannot
be steered (the
vehicle can travel)
a. Steering potentiometer or its
circuit connection failure
b. Redirector or the tubings
connection failure
c. Steering bridge or the tubings
connection failure
d. Pump motor failure
e. Gear pump failure
f . Pump controller failure
Controller failure error, carry out
troubleshooting according to the
fault code information on the
instrument .
1) Check the steering potentio-
meter or its connection circuit;
2) Check if the mechanical
connection between steering
wheel and redirector is solid;
3) Check the redirector or the
tubings connection;
4) Check the steering bridge or
the tubings connection.
5) Check the pump motor or its
connection circuit;
6) Check the pump;
7) Replace the controller.
* Carry out trouble shooting in accordance with the order listed
in the table, it can help you quickly identify problems and
resolve accordingly.