ep ICE301B - Page 20

30
REV. 09/2020
31
REV. 09/2020
TROUBLESHOOTING TROUBLESHOOTING
3 3
Table 3.1 Troubleshooting of Common Faults (continued)
Fault Fault Symptom Probable Causes Troubleshooting
Steering Fault
1. The vehicle cannot
be steered (the
vehicle can travel)
• Steering potentiometer or its
circuit connection failure
• Redirector or the tubings
connection failure
• Steering bridge or the tubings
connection failure
• Pump motor failure
• Gear pump failure
• Pump controller failure
Controller failure error, carry out
troubleshooting according to the
fault code information on the
instrument .
1. Check the steering potentiom-
eter 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.
2. Steering Bridge
Abnormal Noise
• Supporting bearing wear 1. Replace the bearing
3. Steering Bridge Oil
Leaks
• Oil seal wear or aged
• Not at of shim in limiting position
bolt
1. Replace the Oil seal
2. Grinding shim or replace it
4. Steering Bridge
Stuck
• Support bearing damage. 1. Replace the bearing
5. High e󰀨ort for
steering of failure
to rotate steering
wheel
• Not enough oil supported by
pump
• Air enters in the line of steering
gear
• Not enough oil in tank
• Too low pressure setting of the
relief valve in the dividing valve
or blocking in valve
• Too high viscosity oil
• The steering fails to return to its
natural position due to breakage
of locking spring or insu󰀩cient
spring pressure
• Break or deform of swivel pin
• Break or deform of coupling
• Wrong in spring or safety valve
• Too much internal leakage in the
steering cylinder
• Deform of steering axle
1. Adjust control valve
2. Bleed the air
3. Fill oil
4. Adjust pressure or clear dirt
5. Replace wrong oil
6. Replace wrong spring
7. Replace it
8. Replace coupling
9. Replace spring
10. Replace seal or cylinder
11. Repair it
Table 3.1 Troubleshooting of Common Faults (continued)
Fault Fault Symptom Probable Causes Troubleshooting
Other Failures
1. Lights do not light
a. Light failure or circuit not
conducted
b. Lighting combination switch or
its circuit connection failure
c. Fuse failure
d. DC-DC converter failure
1. Check the light and its cir-
cuit connection;
2. Check Lighting combination
switch and its connection
circuit;
3. Check fuse and its connec-
tion circuit;
4. Check DC-DC converter
and its connection circuit.
2. Horn does not
sound
a. Horn switch or its circuit
connection failure
b. Horn failure
c. Fuse failure
d. DC-DC converter failure
1. Check the horn button and
its connection circuit;
2. Check the horn and its con-
nection circuit;
3. Check fuse and its connec-
tion circuit;
4. Check DC-DC converter
and its connection circuit.
* Carry out trouble shooting in accordance with the order listed in the table, it can help you quickly
identify problems and resolve accordingly.