Service Manual

Stabil-TRAK™ System and Boom Interlock System
10.16
Model 8042, 10042, 10054 Legacy Rev. 10/03
10.7 STABIL-TRAK™ ELECTRICAL CIRCUIT OPERATION AND TROUBLESHOOTING
(8042/10042)
IMPORTANT: Before using the 8042 and 10042 Stabil-
TRAK System Troubleshooting chart and diagrams,
complete the Section 10.8, “Stabil-TRAK™ System
Test,” on page 10.20, to determine what part of the
system is not functioning properly.
Definitions:
PB = Park Brake
SB = Service Brake
DE = De-energized
E = Energized
C = Closed
O = Open
8042 and 10042 Stabil-TRAK™ System Troubleshooting
FREE PIVOT
MODE
SLOW PIVOT
MODE
LOCKED
MODE
Reference
Page (10.17)
Reference
Page (10.18)
Reference
Page (10.19)
Machine
Conditions
Switch/
Relay
Solenoid
Ignition On
Boom Below 40°
Boom Retracted
PB & SB Released
Trans. in Forward or Reverse
Ignition On
Boom Above 40°
Boom Extended
PB & SB Released
Trans. in Forward or Reverse
Ignition On
Boom Above 40°
Boom Extended
PB & SB Applied
& Trans. in Neutral
Solenoid 12A E DE DE
Solenoid 12B E DE DE
Solenoid 3 DE DE E
Solenoid 4A DE E DE
Solenoid 4B DE E DE
Boom Angle Sensor C O O
Boom Switch Relay E DE 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 C
Service Brake Switch O O C
Secondary Function Manifold
Park Brake Solenoids
EEDE
Park Brake Disengage Relay E E DE
Neutral Start Relay DE DE E