Servis-Rhino 60C manual Maintenance

MAINTENANCE

MAINTENANCE

	POSSIBLE CAUSE	CORRECTIVE ACTION
15	Excessive back	Restriction between “in”
	pressure.	and “out” port and
		reservoir.
16	Paint on valve spool.	Clean valve spool. Binding
	Sticking valve spool,	may be caused by over
	or scored valve.	tightened plug, mounting
		bolt, fitting or tie rod bolt.
		See Item 30.
17	Oil leakage past	If spool cap contains oil,
	spool seal into spool	replace spool seal o-ring.
	cap.	If o-ring retainer is
		“bellied”, check for
		restriction from “out” port
		reservoir. See Item 30.
18	Broken return	Replace broken return
	springs.	springs.
19	Bent spool.	Return for factory repair or
		replace with new spool
		section. See Item 30.
20	Foreign particles.	Clean system and valve.
21	Misalignment of	Check linkage for binding
	control handle	condition.
	linkage.
22	Spool not moved to	Spool travel should be
	full stroke.	5/16” either way or 5/8”
		total.
23	Relief valve setting	Clean or overhaul relief
	in control valve too	valve or replace cartridge.
	low or defective.	Refer to VALVE SERVICE
		section for proper PSI
		settings.
24	Overload relief valve	Clean relief. Do not disturb
	in control valve	pressure setting or replace
	stuck open or	cartridge.
	malfunctioning.
25	Worn control valve.	Replace control valve.
26	Check poppet in	Clean check poppet(s)
	control valve not	carefully. Ensure free
	holding.	movement and proper
		seating or replace check
		poppet. See Item 30.
27	Damaged or worn	Replace spool end seals.
	spool seals.
28	Check ball in anti-	Clean anti-cavitation valve
	cavitation is stuck or	carefully. Assure that
	not seated properly.	checks move freely and
		seat properly or replace
		cartridge. See Item 30.
29	Valve cap and	Loosen screws holding
	center return	cap on valve (ref. Valve
	mechanism binding.	Service image). Operate
		valve spool and retighten
		screws.

This valve is a precision device and is not intended for extensive field adjustment or repair. Field replacement parts are limited to seal kits, cartridges and tie rod ends. Beyond replacement of these parts, opening of check cavities and certain relief valve cavities to examine for trapped dirt, or resetting main relief valve with the use of a good pressure gauge, valve should be returned for service.

Dirt and shreds of packing material are the usual causes of valve malfunction. Be sure that oil supply is kept clean. Use only factory supplied packings in cylinder repair. Fittings and hoses must be clean before being removed.

NOTE: Pay close attention to all caution warning notes so valve will not have to be returned to manufacturer for reconditioning.

Troubleshooting guide is designed to help qualified individuals, with valve service training, correct minor problems which may develop. If valve is under warranty do not attempt disassembly for repairs. Contact your authorized dealer. Any attempt to disassemble valve during warranty period will VOID warranty.

F-4139 01/11 Maintenance Section 3-6

© 2011 Alamo Group Inc.