SkyTrak 6042 Service Manual - Manual (Page 512)

Stabil-TRAK™ System
10.6 Model 6042 Legacy Origin 7/02
c. Final Positioning Mode (Fig. 10-8)
With the boom above 40°, the Stabil-TRAK™ system is
now in the FINAL POSITIONING MODE. In this mode the
rear axle is UNLOCKED and is allowed to pivot, but will
respond SLOWLY to changes in terrain. The
Stabil-TRAK™ light will be OFF.
The frame sway control function will function normally in
this mode.
To check that the Stabil-TRAK™ System is functioning
properly, refer to Section 10.6, “Stabil-TRAK™ System
Test” for the proper system function.
Figure 10-8 Stabil-TRAK™ System
FINAL POSITIONING MODE
10.3.2 Stabil-TRAK™ Solenoid Valves
There are five Stabil-TRAK™ solenoid valves (Fig. 10-9)
installed in the Stabil-TRAK™ manifold, attached to the
stabilizer cylinder above the left side of the rear axle.
If a solenoid valve is suspected of malfunctioning,
disconnect the coil wiring lead and test the coil for proper
resistance (7-9 ohms) and for proper voltage from the
harness (12 VDC). Replace the solenoid coil if open or
shorted to ground.
Also inspect the valve cartridge, o-rings, and the other
hydraulic and electrical components in the circuit to
accurately determine the cause of the problem.
All solenoid coils are identical and can be interchanged
for diagnostic purposes.
Note: DO NOT interchange valves 4A, 4B, 12A or 12B
with valve 3. These valves will fit into the other locations,
but are configured differently internally and will not
operate properly if interchanged.
Cartridge valves 4A, 4B, 12A and 12B are identical and
can be interchanged for diagnostic proposes.
IMPORTANT: Make sure the .060 orifices are in place
when installing solenoid valves 4A and 4B.
Figure 10-9 Stabil-TRAK™ Manifold,
Solenoid-Operated Valve Location
In general, if there is a problem with the Stabil-TRAK™
system beyond common electrical troubles, the involved
electrical and hydraulic circuits should each be checked
and the exact source of the problem diagnosed before
any parts are replaced.
Stabil-TRAK
Light
"OFF"
Above
40° FINAL
POSITIONING
MODE
OH0723
MT3131
3 12A
4A
4B
12B
100 psi (7 bar)
Reducing cartridge