Pressure suction return load sense – SkyTrak 6036 Service Manual User Manual
Page 267
10-39
6036, 6042, 8042, 10042, 10054
Stabil-TRAK™
System and Boom Interlock System
10.11.14 Hydraulic Troubleshooting - LOCKED MODE, Will Not Frame Level Left
FTR
P
T
V
Pressure
Suction
Return
Load Sense
G3
G2
G1
4A
4B
12B
3
2B
2A
12A
FRAME
LEVEL
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
AT
TA
C
H
TIL
T
P
FRAME
SW
A
Y
EXT/RET
LFT/L
WR
AU
X
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
MAQ3102
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.
Replace check valve(s).
If OK
With boom above 40°, when frame
leveling to left, the right front tire
comes off the ground.
Not
OK
Refer to Section 10.8, “Stabil-TRAK™
Boom Interlock Electrical Circuit
Operation and Troubleshooting (6042/
8042/10042),” or Section 10.9,
“Stabil-TRAK™
Boom Interlock
Electrical Circuit Operation and
Troubleshooting (10054),”
Check electrical wiring.
Not
OK
Check solenoid cartridge 3 in
the Stabil-TRAK™
manifold.
Replace cartridge.
If OK
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