SkyTrak 6036 Service Manual - Manual (Page 235)

10-7 6036, 6042, 8042, 10042, 10054
Stabil-TRAK™ System and Boom Interlock System
10.4.2 Stabil-TRAK™ Solenoid Valves
There are five Stabil-TRAK™ solenoid valves 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 solenoid valves 4A (14),
4B (15), 12A (16) or 12B (17) with solenoid valve 3 (18).
These valves will fit into the other locations, but are
configured differently internally and will not operate
properly if interchanged.
Cartridge valves 4A (14), 4B (15), 12A (16) and
12B (17) are identical and can be interchanged for
diagnostic proposes.
Note: Make sure 0.060 orifices are in place when
installing solenoid valves 4A (14) and 4B (15).
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.
10.4.3 Logic Wiring Harness (10054 Only)
The Model 10054 uses an additional logic wiring harness,
that includes all wiring, fuses and relays needed for the
operation of the boom interlock, Stabil-TRAK™
and
outrigger systems.
The logic harness has a fuse panel (1) that is attached to
the fuse panel (2) from cab harness. The logic harness
includes all the additional relays (3 through 10) and fuses
(11 and 12) required for the operation of the boom
interlock, Stabil-TRAK™
and outrigger systems.
Refer to Section 10.9, “Stabil-TRAK™ Boom Interlock
Electrical Circuit Operation and Troubleshooting
(10054),” for electrical troubleshooting information.
MT3131
14
16
15
17
18
No. Volt Circuit Protected
3 12 Volt Park Brake Interlock Relay
4 12 Volt Boom Extend Relay
5 12 Volt
Outrigger Lockout Relay (SN 13198 through 17984)
Blank (SN 17985 & After)
6 12 Volt Stabil-TRAK Interlock Relay
7 12 Volt Stabil-TRAK Lock Up Relay
8 12 Volt Boom Extend Interlock Relay
9 12 Volt Right Outrigger Lock Relay
10 12 Volt Left Outrigger Lock Relay
11
7.5
Amp
Boom/Outrigger Interlock
12
7.5
Amp
Boom/Outrigger Interlock
7.5
20
7.5
10
10
10
15
10
7.5
40 7.5
7.5
MH4111
1 2
3
4
6
8
9
5
7
10
11
12