This Task Covers:
c. Follow-On Maintenance
TM or Para
Vehicle positioned on level
Tools and Special Tools
Parking brake applied.
Engine shut OFF.
Electrical master switch OFF.
"Do Not Operate" tag attached
to ignition switch.
MOS 62B, Construction Equipment Repairer
Estimated Time to Complete
FO-3, Electrical schematic
The electrical control unit (ECU) is located under the driver's seat. This ECU supplies power to control levers, transmits
automatic signals (e.g., anti-rollback, automatic return-to-dig, and transmission cutout, etc.), maintains a constant attitude up
and down, interprets the position of the seat, and protects and regulates the system's operating voltage.
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry or tools contact
positive electrical circuits, a direct short may
result. Damage to equipment and injury or
death to personnel may occur.
· Tag all wires and note their positions
· Remove cable ties as necessary.
Remove two bolts (1), cover plate (2), and
retaining clips (3).
Unscrew and remove three wiring
Remove two bolts (5) and ECU (6).
Remove seal, if necessary.