9. Troubleshooting
In the event a problem occurs with the grapple, the following
table lists some probable causes and solutions.
If a problem exists that is difficult to solve, call your local dealer,
distributor, or Wallenstein Equipment. Have the grapple serial
number handy.
Problem
Possible Cause
Solution
Hydraulics functions move
slowly or do not move.
No pressurized hydraulic oil. Filter
plugged.
Change Filter
Low oil level
Top up as required.
Hoses connected incorrectly.
Correct.
Low oil flow. Flow control set too
low.
Adjust control.
Selector valve not powered
(machines with optional selector
valve kit).
Connect selector valve solenoid to 12 VDC source.
Wrong function selected (machines
with optional selector valve kit).
Check harness is connected to correct function.
Harness connector loose or
damaged (machines with optional
selector valve kit).
Check connection. Inspect for damage. Repair or replace.
Low engine speed
Increase engine speed.
Hydraulic functions are jerky.
Leak in hydraulic system. Air getting
into the system.
Tighten all connections. Check for leaks in hoses.
Hose couplers dirty or incompatible. Clean couplers. Makes sure mating couplers are correct type.
Skid steer has closed-center
hydraulic circuit.
Contact service technician.
Leaking hydraulic hose.
Hose worn and damaged, or
connector is loose.
Inspect hose for damage. Replace if damaged. Check to make sure
for connector torque requirements
.
Leaking hydraulic cylinder.
Cylinder seals worn or damaged.
Disassemble and overhaul cylinder. Check oil for debris.
Pivot does not lock.
Shear pin broken.
Replace.
Pivot does not return to neutral
position.
Spring broken.
Replace.
Lock lever engaged.
Release.
Troubleshooting
LXG400 Series
Log Grapples
44