C15 and C18 Engines for Caterpillar Built Machines Caterpillar

Removal Procedure

Start By:

1. Remove the air compressor. Refer to Disassembly and Assembly, "Air Compressor - Remove and Install".

Illustration 1	g01148907

1. Install Tooling (A) on air compressor drive gear (1).

2. Remove nut (2).

3. Remove air compressor drive gear (1).

Installation Procedure

Note: Caterpillar may use air compressors that have a tapered shaft or a straight shaft. The torque for the nut on the air compressor crankshaft is different for each type of crankshaft.

Note: Identify the manufacturer of the air compressor for your particular application.

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Illustration 2	g01148907

1. Install air compressor drive gear (1) on the air compressor.

2. Install Tooling (A) on air compressor drive gear (1).

3. Install nut (2).

Tapered Shaft on Bendix Air Compressor

1. Tighten nut (2) to a torque of 160 ± 15 N·m (118 ± 11 lb ft).

2. Tap the gear axially with a soft faced hammer to seat the gear onto the tapered crankshaft.

3. Tighten the nut again to a torque of 160 ± 15 N·m (118 ± 11 lb ft).

Straight Shaft on Bendix Air Compressor

1. Tighten nut (2) to a torque of 460 ± 60 N·m (340 ± 44 lb ft).

Wabco 250 Air Compressor

1. Tighten nut (2) to a torque of 150 ± 5 N·m (111 ± 4 lb ft).

2. Place an index mark on the nut and rotate nut (2) an additional 60 ± 5 degrees.

End By:

1. Install the air compressor. Refer to Disassembly and Assembly, "Air Compressor - Remove and Install".