Lull 944E-42 Service Manual - Manual (Page 237)

10-25 944E-42
Stabil-TRAK™ System
10.5.14 Hydraulic Troubleshooting - Locked Mode, Will Not Frame Sway Right
Conditions:
• Ignition ON, engine
running
• Boom angle is
above 40°
• Travel select lever in
(N) NEUTRAL, or
park brake ON, or
service brake
ENGAGED
Inspect check valves 2A and 2B on the
stabilizer cylinder. Refer to Section 8.8,
“Hydraulic Cylinders.”
Replace check valve(s).
With boom above 40°, when frame
swaying to the right, the left front tire
comes off the ground.
Check electrical wiring.
Check solenoid cartridge 3 in the
Stabil-TRAK™ manifold. Refer to Section
8.8, “Hydraulic Cylinders.”
Replace cartridge.
Not
OK
Not
OK
Not
OK
If OK
If OK
Refer to Stabil-TRAK™ Electrical
Circuit Operation and Troubleshooting