C6.6 Engines for Caterpillar Built Machines Electric Starting Motor - Remove and Install Caterpillar

Removal Procedure

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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.

1. Turn the battery disconnect switch to the OFF position.

2. Place identification marks on the harness assembly that is connected to the electric starting motor and the solenoid.
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   Illustration 1	g01342054
   Typical example

3. Disconnect the harness assembly from the electric starting motor and the solenoid.

4. Remove nuts (2) for electric starting motor (3).

5. Remove electric starting motor (3).

6. If a joint is installed, remove joint (4).

7. If necessary, remove studs (5) from flywheel housing (1).

Installation Procedure

Illustration 2	g01342054
Typical example

1. If necessary, install studs (5) into flywheel housing (1).

2. If necessary, install a new joint (4) onto the studs in flywheel housing (1).

3. Position electric starting motor (3) onto the studs in flywheel housing (1).

4. Install nuts (2).

   Tighten M10 nuts to a torque of 44 ± 11 N·m (32 ± 8 lb ft).

   Tighten M12 nuts to a torque of 78 ± 19.5 N·m (57 ± 14 lb ft).

5. Connect the harness assembly to the electric starting motor and the solenoid.

6. Turn the battery disconnect switch to the ON position.