Service Manual Manual

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
Stabil-TRAK Components Affected By
Boom Interlock System
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