Troubleshooting - WBM XPC500 Grapple Parts, Service And Installation

XPC500 / XPC600 GRAPPLE
PARTS, SERVICE AND INSTALLATION
MAINTENANCE

TROUBLESHOOTING

Troubleshooting
PROBLEM
Doesn't hold load or stops
functioning
Rotation or Jaw function fail Control valve solenoid failure
Weldco-Beales Manufacturing
CAUSE
Low hydraulic pressure
Broken hose(s)
Control valve malfunction
Seal failure in cylinder(s)
Seal failure in swivel
Problem persists after replacing
solenoid
WBM
SOLUTION
Check Hydraulic pressure
Repair/replace hose
Check control valve
Check piston seal
Check swivel seals
Install new solenoid
Verify defective valve
section
Check wiring from solenoid
to power source
Check pilot pressure
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