Holder C-Trac C 9700 - Manual (Page 149)

C 9700 ... C 9.88 H
Operating Instructions
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Malfunctions, cause, remedy
Problem Cause Remedy
Hydraulic oil heats too quickly,
system works against excess
pressure
(engine under load)
Control valve jammed.
Control lever remains in operated
position
(Does not automatically return to
neutral position)
Cylinder at limit stop
No implement attached, but control
lever operated (coupling)
Adjust as above
Put valve in neutral position (free
circulation)
Put valve in neutral position (free
circulation)
Hydraulic oil foams Leaks in the suction range Check all pipe connections and
tighten, if required
Hydraulic system working too slowly,
accompanied by whistling noise
Hydraulic oil level too low
Temperatures too low
Fill up as specified
Replace with proper type of oil as
specified in maintenance manual
Steering not working Priority flow valve dirty
Relief valve in hydraulic steering not
closing
Remove the priority flow valve at the
steering and clean it
Remove and clean (authorized
workshop)
Lost steering motion when steering
direction is changed rapidly
Leaks in steering return line Tighten return flow hose