Copyright © 2000 Rayco - All Rights Reserved
Printed in U.S.A.
RG 1635A STUMP CUTTER
RAYCO
®
54
TROUBLE-SHOOTING
Symptom - Cutting Boom Swings
Sideways Uncontrolled
A. Problem - Cylinder rod seal
leaking
If when operated, cylinder loses fluid around rod, rod
seal is leaking.
Solution for Faulty Cylinder Rod Seal
Replace cylinder rod seal, using kit available from
your RAYCO distributor.
B. Problem - Cylinder piston seals
leaking
To determine if cylinder piston seals are leaking,
perform a hydraulic pressure check of the cylin-
ders circuit. (Refer to chart on preceding page.)
Solution for Faulty Cylinder Piston Seal
The hydraulic cylinder seals should be replaced.
Hydraulic cylinder rebuild kits are available from
RAYCO or your RAYCO dealer.
Solution for Faulty Cylinder Rod Seal
Replace cylinder rod seal, using kit available from
RAYCO or your RAYCO dealer.
B. Problem - Cylinder piston seals
leaking
To determine if cylinder piston seals are leaking,
perform a hydraulic pressure check of the cylin-
ders circuit. (Refer to chart on preceding page.)
Solution for Faulty Cylinder Piston Seal
The hydraulic cylinder seals should be replaced.
Hydraulic cylinder rebuild kits are available from
RAYCO or your RAYCO dealer.
C. Problem - Pilot Check Valve Dirty or
Misadjusted
Solution
1. Using a 1" hex wrench, remove shorter hex end
of pilot check valve.
2. Clean ball/spring assembly with compressed
air or a clean cloth, and make sure ball seats
without obstruction.
3. Reassemble.
If problem persists, check adjustment.
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