C6.6 Engines for Caterpillar Built Machines Alternator Belt - Remove and Install Caterpillar

Removal Procedure

1. If the engine has fan guards, remove the fan guards.
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   Illustration 1	g01341758

2. Install a suitable square drive tool into Position (X) in tensioner (3). From the front of the engine, turn the tool in a clockwise direction.

3. Insert Tooling (A) into Hole (Y). Release the pressure on the square drive tool.

4. Remove alternator belt (1).

   Note: Mark the direction of rotation if the belt will be reused.

5. From the front of the engine, turn the square drive tool in a clockwise direction. Release the pressure on Tooling (A). Remove Tooling (A) from Hole (Y).

6. Release the pressure on the square drive tool and remove the tool from Position (X).

7. If necessary, follow Step 7.a through Step7.b in order to remove tensioner (3) from mounting bracket (2).

   1. Remove bolt (4) that secures tensioner (3) to mounting bracket (2).

   2. Remove tensioner (3) from mounting bracket (2).

Installation Procedure

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Illustration 2	g01156850
Typical example

1. If the tensioner was previously removed, follow Step 1.a through Step 1.c in order to install the tensioner.

   1. Align the dowel in back of tensioner (3) with the hole in mounting bracket (2).

   2. Install tensioner (3) to mounting bracket (2).

   3. Install bolt (4). Tighten the bolt to a torque of 44 N·m (32 lb ft).

2. Install a suitable square drive tool into Position (X) in tensioner (1). From the front of the engine, turn the tool in a clockwise direction.

3. Insert Tooling (A) into Hole (Y). Release the pressure on the square drive tool.

4. Install alternator belt (1). Ensure that the alternator belt is centered on pulley (5). A used alternator belt should be installed in the original direction of rotation.

   Note: The ribs on the alternator belt must be located into the ribs of all pulleys.

5. From the front of the engine, turn the square drive tool in a clockwise direction. Release pressure on Tooling (A). Remove Tooling (A) from Hole (Y).

6. Release the pressure on the square drive tool until the alternator belt is tensioned. Remove the tool from Position (X).

   Note: The tensioner should be at the nominal position.

7. If the engine has fan guards, install the fan guards.