GEAR (80 Teeth) 4N3330 - Caterpillar

Removal Procedure
Accidental engine starting can cause injury or death to personnel working on the equipment.To avoid accidental engine starting, disconnect the battery cable from the negative (−) battery terminal. Completely tape all metal surfaces of the disconnected battery cable end in order to prevent contact with other metal surfaces which could activate the engine electrical system.Place a Do Not Operate tag at the Start/Stop switch location to inform personnel that the equipment is being worked on.
Turn the battery disconnect switch to the OFF position.
Place identification marks on the harness assembly that is connected to the electric starting motor and the solenoid.
Illustration 1 g01973073
Typical example
Disconnect the harness assembly from the electric starting motor and the solenoid.
Support electric starting motor (3).
Remove nuts or bolts (2).
Remove electric starting motor (3).
If a gasket is installed, remove gasket (4).
If necessary, remove studs (5) from flywheel housing (1). Installation Procedure
Illustration 2 g01973073
Typical example
If necessary, install studs (5) into flywheel housing (1). Tighten the studs to a torque of 18 N m (159 lb in).
If necessary, install a new gasket (4) onto the studs in flywheel housing (1).
Position electric starting motor (3) onto the studs in flywheel housing (1).
Install nuts or bolts (2). Tighten nuts or bolts to a torque of 44 N m (33 lb ft).
Connect the harness assembly to the electric starting motor and the solenoid.
Turn the battery disconnect switch to the ON position.