Stabilizer Cylinder Oil Flow - JLG sky trak mmv Service Manual

Symptom
With the boom above 40° when
swaying the frame to the right, the
left front tire comes off the ground.
With the boom above 40° when
swaying the frame to the left, the
right front tire comes off the
ground.
11.4.2

Stabilizer Cylinder Oil Flow

In the FREE PIVOT and FINAL POSITIONING MODE, oil
flow from the stabilizer cylinder will be in one of two direc-
tions; ROD OIL OUT or BASE OIL OUT.
ROD OIL OUT flow will occur when the left side of the
rear axle is lower than the right side (left wheel in a pot-
hole, or the right wheel passing over an obstruction),
causing the cylinder to extend (1).
BASE OIL OUT flow will occur when the right side of the
rear axle is lower than the left (right wheel in a pothole, or
the left wheel passing over an obstruction), causing the
cylinder to compress (2).
Model MMV Rev. 12/04
Conditions
Ignition ON, engine running
Boom angle is above 40°
Travel select lever is in [N] NEUTRAL, or Park
brake ON or Service brake
ENGAGED
Ignition ON, engine running
Boom angle is above 40°
Travel select lever is in [N] NEUTRAL, or Park
brake ON or Service brake
ENGAGED
Stabil-TRAK™ System
Reference
Refer to Section 11.4.17, Hydraulic Cir-
cuit Operation - Locked Mode, Frame
Sway Right and Section 11.4.19, Hy-
draulic Troubleshooting - Locked Mode,
Will Not Frame Sway Right
Refer to Section 11.4.18, Hydraulic Cir-
cuit Operation - Locked Mode, Frame
Sway Left and Section 11.4.20, Hydrau-
lic Troubleshooting - Locked Mode, Will
Not Frame Sway Left
1
2
MM2350
11.7