Service Manual

10.49
Model 8042, 10042, 10054 Legacy Rev. 10/03
Stabil-TRAK™ System and Boom Interlock System
10.12.15 Hydraulic Troubleshooting - LOCKED MODE, Will Not Frame Sway Left
Not
OK
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
Stabil-TRAK™ cylinder. Refer to Section
8.13.9, “Stabil-TRAK Cylinder.”
Replace check valve(s).
If OK
With boom above 40°, when frame
swaying to the left, the right front tire
comes off the ground.
Not
OK
Refer to Section 10.7, “Stabil-TRAK™
Electrical Circuit Operation and
Troubleshooting (8042/10042),” Section
10.9, “Stabil-TRAK™ Boom Interlock
Electrical Circuit Operation and
Troubleshooting (10054, 13198-17984),”
or Section 10.10, “Stabil-TRAK™ Boom
Interlock Electrical Circuit Operation and
Troubleshooting (10054, 17985-19987
and 0160002332 & After),”
Check electrical wiring.
Not
OK
Check solenoid cartridge 3 in the
Stabil-TRAK™ manifold. Refer to
Section 8.13.9, “Stabil-TRAK Cylinder.”
Replace cartridge.
If OK
FTR
P
T
V
Pressure
Suction
Return
Load Sense
G3
G2
G1
4A4B
12B
3
2B
2A
12A
FRAME
SWAY
CYLINDER
.060 DIA.
.030 DIA.
.060 DIA.
100 PSI
SOLENOID COIL
STATE
ENERGIZED
DE-ENERGIZED
DE
E
E
DE
DE
P
T
C
PS
PB
PLT
PSG
PBG
G
IN
T
T
ATTA CH
TILT
P
FRAME
SWAY
EXT/RET
LFT/LWR
AUX
STABIL-TRAK
MANIFOLD
TM
DE
DE
STABIL-TRAK
CYLINDER
TM
HYDRAULIC
OIL COOLER
BYPASS
CHECK
VALVE
BYPASS
CHECK
VALVE
HYDRAULIC
RESERVOIR
SECONDARY
FUNCTION
MANIFOLD
PUMP
MAIN CONTROL
VALVE
MH3101
1
2
3
4
5
6
7
8
9
10
11
12
13