FENDT FAVORIT 900 - B - Faults; Power lift and service hydraulics (hydraulic section) troubleshooting table

Farmer 400
Fav 700
Fav 900
Power lift / EPC electrohydraulic power lift control
Power lift and service hydraulics (hydraulic section) troubleshooting table
B
Faults
Fav 900 chassis number 23/3001 and up
17.04.2001
8610 000001
B
a
1/1
Capitel Docu-No.
Index
Date Version
Page
Power lift and service hydraulics (hydraulic section) troubleshooting table
Text-module
Power lift and service hydraulics (hydraulic section) troubleshooting table
Fault Cause Remedy
1. Power lift switched to DA
auxiliary control unit. Power
lift does not lift and lower.
1. No or too little oil in
hydraulic tank
1. Check oil level / top up.
2. Power lift switched to EPC.
Operate control valve
manually, power lift does
not lift and lower.
2. Fault in control valve. 2. Replace control valve.
3. Power lift switched to EPC.
Operate control valve
manually. Power lift lifts and
lowers. However, cannot
be operated electrically/
electronically.
3. Fault in electrics /
electronics
3. See Faults in electrical /
electronic systems,
Chapter 8610 Index B
4. Power lift and/or external
cylinder, e.g. front loader,
lifts too little when hydraulic
oil is warm
4a. Min. hydraulic pressure of
200 bar is not being
reached. Measure
pressure.
4a. Check pressure-relief
valve DBV-A. Setpoint:
230 bar
4b. Fault in LS pump PR. 4b. Test LS pump PR with
flow-rate meter. Replace
LS pump PR if necessary.
4c. Mounted implement too
heavy.
4c. Connect mounted
implement differently. If
necessary, mount lighter
implement.
5. Power lift does not go to
end shutoff
5a. No overtravel at lift arms 5a. Set power lift end shutoff.
Chapter 8610 Index F
5b. Position sensor B030 gives
incorrect signal values
5b. Position sensor B030,
Measuring and testing -
Chapter 9000 Index E
5c. Mounted implement
non-standard (too wide), or
category not correctly set,
or implement too heavy.
5c. Adapt mounted implement
to standard, set category in
line with standard, reduce
implement weight.
6. Power lift lowers load a little
and then lifts it again
(approx. every 20 sec).
6a. Internal leak in lift cylinder. 6a. Seal pressure pipe at lift
cylinder and subject lift
assembly to load. - If lift
assembly lowers, replace
lift cylinder, seal lift cylinder.
6b. Internal leak in control
valve.
6b. Seal pressure pipes at lift
cylinder and subject lift
assembly to load. - If lift
assembly does not lower,
replace control valve.
7. Hydraulic oil becomes too
warm
7. Oil flow setting at relevant
auxiliary control unit too
high
7. Check oil flow setting.
8. Power lift lowers and lifts in
floating position setting
8. Mounted implement 8. Mounted implement not in
accordance with correct
standard. Check mounted
implement for lateral
clearance.