Farmer 400
Fav 700
Fav 900
Tractor / General system
General troubleshooting chart for the hydraulics
B
Faults
25.10.2000
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000004
B
a
1/2
Capitel
Docu-No.
Index
Date
Version
Page
General troubleshooting chart for the hydraulics
Text-module
Message - symptom - fault
A
Rise in oil temperature
B
Required working pressure of 200 bar not reached with any
consumer
C
Commands are carried out with a delay
D
Set figures, e.g. speeds, reduce
E
Tractor engine speed is depressed
F
Noise / hydraulic systems are loud
X
likely
possible
Fault
Cause
Action, if
necessary see ...
O
A B C D E F G H J K L
X
System-related;
i.e. not a fault!
With dynamic constant load at high
pressure level
O
When bio-oils are used, hydraulic systems
may be louder in operation
X
Lack of cooling
Contaminated radia-
tor
Check
O
Insufficient residual
oil volume in tank
Check
O
Visco fan does not
kick in
Check
X
Engine speed too low
X
X O
Pressure overlap /
overpressure effect at
Working pressure of
200 bar increased
without authority
Symptom: engine
speed depressed
and
O
X O
Safety valve DBV-A
Pressure relief too
low
Rise in oil
temperature
X
O
LS pump constantly
working at excessive
pressure
Implement cannot
reach setpoint
X
X
Consumer running
against stop too long,
e.g. seized valve or
time function of elec-
trohydraulic control
valve (EHS) too long
X
X
Fault in charge valve;
oil leaking from P line
to LS; (=constant
charge effect)
X
X O
Hydr. oil preheater (in
tractors with EHS val-
ves)
Does not switch off
(required time at
-20
°
C normally ap-
prox. 15 to 20 mins)
Note: noise during in-
tended preheating of
oil (=flushing) is not a
fault
X
O
Auxiliary pump wor-
king against pressure
Priority valve does
not switch / seizes
O
O
Other throttle valves
have free flow
O
Working pressure in
LS pump too low
200 bar pressure re-
lief adjusted
