Stabil-trak™ system and boom interlock system – SkyTrak 8042 Service Manual User Manual
Page 224
Stabil-TRAK™
System and Boom Interlock System
10-10
6036, 6042, 8042, 10042, 10054
10.6
STABIL-TRAK BOOM INTERLOCK ELECTRICAL CIRCUIT OPERATION AND
TROUBLESHOOTING (10054)
Note: Before using the 10054 Stabil-TRAK System
Troubleshooting chart and diagrams, complete Section
10.5, “Stabil-TRAK System Test” and Section 10.7,
“Boom/Outrigger Interlock System Test (10054)”, to
determine what part of the system is not functioning
properly. If an outrigger is raised or a pressure switch is
defective, boom on the 10054 will not extend beyond the
42 Series extension limit.
Definitions:
Boom Retracted = Less than 42 Series extension limit
Boom Extended = Boom at 42 Series extension limit or
greater.
PB = Park Brake
DE = De-energized
E = Energized
10054 Stabil-TRAK System Troubleshooting
BOOM EXTEND MODE 1
BOOM EXTEND MODE 2
BOOM EXTEND MODE 3
Machine
Conditions
Switch/
Relay
Solenoid
Ignition On
Boom Below 40°
Boom Retracted
PB Released
Trans. Fwd. or Rev.
Outriggers Raised
Ignition On
Boom Below 40°
Boom Extended To
42 Series Extension Limit
PB Released
Trans. Fwd. or Rev.
Outriggers Raised
Ignition On
Boom Below 40°
Boom Extended Beyond
42 Series Extension Limit
PB Applied By Interlock Sys.
Trans. In Neutral By Interlock Sys.
Outriggers Lowered
Solenoid 12A
S
ta
b
il
-TRAK
Compo
n
e
n
ts
Af
fe
c
te
d
By
Bo
om
I
n
te
rl
oc
k Sys
te
m
E
E
DE
Solenoid 12B
E
E
DE
Solenoid 3
DE
DE
E
Solenoid 4A
DE
DE
DE
Solenoid 4B
DE
DE
DE
Boom Angle Sensor
C
C
O
Boom Switch Relay
E
E
DE
Stabilizer Lock Relay
DE
DE
E
Stabilizer Light
OFF (DE)
OFF (DE)
ON (E)
Ignition Switch
C
C
C
Park Brake Switch
O
O
O
Park Brake Light
OFF (DE)
OFF (DE)
ON (E)
BOOM EXTEND INTERLOCK SYSTEM TROUBLESHOOTING
Boom Extend Interlock Sensor
C
O
O
Boom Extend Interlock Relay
E
DE
DE
Boom Extend Lockout Relay
E
DE
DE
Outrigger Pressure Switches
O
O
C
Left Outrigger Lockout Relay
DE
E
E
Right Outrigger Lockout Relay
DE
E
E
Stabilizer Interlock Relay
DE
DE
E
Stabilizer Lock-Up Relay
DE
DE
E
Extend Circuit Solenoid Valve
E
E
E
Secondary Function Manifold
Park Brake Solenoids
E
E
DE
Park Brake Interlock Relay
DE
DE
E
Park Brake Disengage Relay
E
E
DE