Holder C 9.72 C 9700 ... C 9.88 H, Operating Instructions, Malfunctions, cause, remedy, Problem

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

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