C27 and C32 Engines for Caterpillar Built Machines Caterpillar

Removal Procedure

Start By:

1. Remove exhaust elbow.

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Illustration 1	g02731522

1. Disconnect tube assemblies (2), (3), and (6). Remove the adapters and clamps.

2. Disconnect tube assembly (4).

   Note: Nuts (5) are a one-time use part. Discard the nuts when the nuts are loosened.

3. Attach a suitable lifting device to turbocharger (1). The weight of turbocharger (1) is approximately 32 kg (70 lb).

4. Remove nuts (5) and remove turbocharger (1).
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   Illustration 2	g02027713

   Note: clamp assemblies (7) are one-time use parts. Discard the clamp assemblies if the clamps are loosened.

5. If needed, remove clamp assemblies (7) and separate the housings from the cartridge assembly.

6. Repeat Steps 1 through 5 for the other turbo.

Installation Procedure

1. Install the turbocharger (1) in the reverse order of removal.
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   Illustration 3	g02027713

   Note: Excessive loosening of the clamp assemblies will damage the turbocharger wheel.

   1. Use the following procedure to tighten clamp assemblies (7) and assemble the turbocharger:

      • To rotate either of the turbocharger compressor housings, loosen clamp assemblies (7).

      • Loosen the clamp assemblies enough to rotate the housings. Position the center bearing housing with the oil supply and the drain in the vertical position.

      • Tighten clamp assemblies (7) to a torque of 13.6 ± 1.2 N·m (120 ± 11 lb in).

      • Tap the clamp assemblies lightly in four places around each clamp assembly.

      • Tighten the clamp assemblies again to a torque of 13.6 ± 1.2 N·m (120 ± 11 lb in).

   2. Apply Tooling (A) to the threads of nuts (5) prior to installation. Tighten to a torque of 54 ± 5 N·m (40 ± 4 lb ft).

   3. Apply clean engine oil in the oil inlet of the turbocharger after assembly or before installation.