Copyright © 2000 Rayco - All Rights Reserved
Printed in U.S.A.
RG 1635A STUMP CUTTER
RAYCO
®
52
TROUBLE-SHOOTING
Symptom - Loss of Hydraulic
Cylinder Power
A. Problem - Pump Belt Slippage
Tighten Belt as directed in 'Every 500 Service Hours'
Interval of the 'Maintenance Intervals' section.
B. Problem - Hydraulic Fluid Low
Re-fill tank as directed in 'Every 10 Service Hours or
Daily' Interval of the 'Maintenance Intervals' section.
C. Problem - Hydraulic Oil Filter Clogged
Change as directed in 'Every 250 Service Hours or 1
Year' Interval of the 'Maintenance Intervals' section
Symptom - Cutting Wheel Travel Weak
Cutting Wheel Lacks Sufficient Power in either
the UP or DOWN or IN or OUT or LEFT or RIGHT
direction of travel.
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.
WARNING
Please take note of danger of fluid penetra-
tion given in the Safety / General Hazard In-
formation section. Improperly tightened fit-
tings can result in dangerous leaks.
Whenever changing fittings, the engine must
be turned OFF and the internal pressures
relieved, to avoid dangerous high pressure
leaks at loosened fittings.
Solution for Faulty Cylinder Rod Seal
Replace cylinder rod seal, using kit available from
RAYCO or your RAYCO dealer.
A liquid filled pressure gauge capable of withstanding
up to 3000 PSI should be installed by inserting a T-
fitting into the high pressure port (see above) of the
hydraulic cylinders pump. Insert the gauge into one
opening of the T-fitting and reconnect the high pressure
hose to the other opening.
With the pressure gauge installed, the engine running
at full throttle, and the cutting boom LEFT/RIGHT
motion speed control valve fully closed, perform the
following checks:
These checks are an aid to verifying the integrity of the
hydraulic cylinder seals, and the control valves. If all of
the checks result in lower than proper gauge readings,
the control valve bank integral pressure relief valve
may be out of adjustment or dirty.
1750 PSI
1750 PSI
1750 PSI
1750 PSI
1750 PSI
1750 PSI
Fully swing cutting
wheel to RIGHT
Fully swing cutting
wheel to LEFT
Fully extend
cutting wheel OUT
Fully retract
cutting wheel IN
Fully depress
cutting wheel
DOWN
Fully raise cutting
wheel UP
ACTION GAUGE READING
Hydraulic System Pressure Checks
To Next Page
Loading...
Need help?
General
