Hydraulic Troubleshooting - Locked Mode, Will Not Frame Sway Left - JLG sky trak mmv Service Manual

11.4.20

Hydraulic Troubleshooting - Locked Mode, Will Not Frame Sway Left

Conditions:
• Ignition ON, engine
running
• Boom angle is
above 40°
• Travel select lever in
[N] NEUTRAL, or
park brake ON or
service brake
ENGAGED
Model MMV Rev. 12/04
With boom above 40° when frame
swaying to the left, the right front tire
comes off the ground.
Check electrical wiring. Refer to Section
11.4.22, Electrical Troubleshooting -
Locked Mode .
If OK
Check solenoid cartridge 3 in the
Stabil-TRAK™ manifold. Refer to
Section 9.14.9, b. Stabilizer Cylinder
Disassembly .
If OK
Inspect check valves 2A and 2B
on the stabilizer cylinder. Refer to
Section 9.14.9, b. Stabilizer Cylinder
Disassembly .
Stabil-TRAK™ System
Refer to Section 10.7.17, Frame Sway
Not
OK Circuit and Troubleshooting .
Not
Replace cartridge.
OK
Not
Replace check valve(s).
OK
11.25