904B Wheel Loader Engine Supplement Caterpillar

Removal Procedure

1. Open the access panel on the left side of the machine.

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Illustration 1	g01156389

2. Move the rubber terminal covers and disconnect battery cables (1) on the battery. Move the battery cables away from the terminals.

   Note: This machine does not have a battery disconnect switch.

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Illustration 2	g01156392

3. Remove bolt (4) from alternator (2) .

4. Move alternator (2) toward the engine and remove V-belt (3) from the alternator pulley.

5. Remove bolt (5) from alternator (2) and remove alternator (2) from the bracket.

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Illustration 3	g01156394

6. Remove harness assembly (6) from the back of alternator (2) .

7. Move rubber boot (7). Remove the nut and remove the harness assembly from alternator (2) .

8. Remove cable strap (8).

9. Remove alternator (2) from the machine.

Installation procedure

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Illustration 4	g01156394

1. Install alternator (2) into position. Do not install the alternator at this time.

2. Install harness assembly (6) onto the back of alternator (2) .

3. Install the harness assembly onto the back of alternator (2). Move rubber boot (7) into position.

4. Install cable strap (8) onto the harness assembly.

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Illustration 5	g01156392

5. Install alternator (2) into the bracket.

6. Install bolt (5) through the bracket and alternator (2). Do not tighten bolt (5) at this time.

7. Install bolt (4) through the bracket and alternator (2). Do not tighten bolt (4) at this time.

8. Install alternator belt (3) on the alternator pulley.

   Note: Refer to the Operation and Maintenance Manual for the correct tightening procedure for the alternator belt.

9. Tighten bolts (4) and (5) when the proper belt tension is achieved.

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Illustration 6	g01156389

10. Connect both terminals (1) of the battery. Install rubber battery covers. Close the access panel on the left side of the machine.

    Note: This machine does not have a battery disconnect switch.

11. Start the engine. Check for the proper operation of the alternator.