Allied Systems W8L Service Manual page 78

Electronic Controls
PROBLEM
Brake slipping or drum
backspin on fast shift
from neutral to forward.
Brake releases before re-
verse clutch engagement.
Noisy buzz emanating
from winch valve.
Winch noisy.
Control lever will not
detent in BRAKE-OFF.
Control lever does not
return to neutral when
released.
Filter LED blinking.
Filter LED illuminated
continuously on at high
RPM with warm oil.
3 - 30
Figure 3-19 Troubleshooting Analysis Check Chart for Operators (continued)
POSSIBLE CAUSE
Brake releases at low pressure.
Broken belleville spring.
Faulty reverse clutch valve or coil.
Air in relief valve.
Ring and pinion out of adjustment.
Air in oil.
Gears and bearings worn.
Detent mechanism worn or broken. 1. Replace joystick assembly.
Insuffi cient lubrication.
Excessive detent force.
Control lever is in detented position
(BRAKE-OFF).
Dirt in mechanism.
Open or shorted coil.
Filter is clogged.
Cold oil is causing fi lter bypass.
Electrical short circuit.
CORRECTION
Check brake release pressure. Replace friction discs
and separator plates if too thin.
Replace. Refer to Section 4.
Check reverse clutch valve and coil.
This is not a detrimental condition. Noise may be
intermittent.
Set ring and pinion backlash.
1. Check for suction leaks.
2. Add oil.
Replace components.
2. Adjust detent spring force (see Control Lever
Detent Force Adjustment in Section 3 for pro-
cedure).
Lubricate detent pin (see Control Lever Detent Force
Adjustment in Subsection of Service for procedure).
Remove knob and adjust detent force (see Control
Lever Detent Force Adjustment in Subsection of
Service for procedure).
Move control lever out of detent.
Check boot for proper seal. Remove boot and clean
dirt from top portion of control lever assembly if
necessary.
See the Control Module Troubleshooting section in
this chapter for more information, or consult dealer.
Change fi lter and oil.
NOTE: Change fi lter only after fi rst 250 hours of
operation when winch is rebuilt.
Monitor LED condition. If LED remains illuminated
after normal operating temperature has been
reached, change oil and fi lter.
Check fi lter bypass switch circuit of wiring harness.