C27 and C32 Engines Caterpillar

Removal Procedure

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Illustration 1	g02345656

1. Remove temperature sensors (4).

2. Remove heat shields (1), (2) and (3).
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   Illustration 2	g02345657

3. Remove clamp assembly (10).

4. Remove nuts (6). Loosen clamp assemblies (5).

5. Remove and discard nuts (7). Remove the spacers, exhaust manifold (8), and the gaskets.

6. Remove and discard nuts (7). Remove the spacers, exhaust manifold (9), and the gaskets.
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   Illustration 3	g02345724

7. Remove and discard clamp assemblies (10) and bellows (15).

8. Remove and discard clamp assemblies (12) and bellows (13). Separate tube assembly (11) and exhaust manifold (8).

9. Remove and discard clamp assemblies (12) and bellows (13). Separate exhaust elbow (14) and exhaust manifold (9).

Installation Procedure

1. Install exhaust manifolds (9) and (8) in reverse order of removal.

   1. Install new clamp assemblies (12) and new bellows (13).
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      Illustration 4	g02346179

   2. Position new bellows (15) and install new clamp assemblies (10) (not shown). Ensure that the end of the bellows with the taper (A-A) is facing the exhaust manifold. Tighten clamp assemblies (10) to a torque of 7.5 ± 1 N·m (66 ± 9 lb in).
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      Illustration 5	g02346618
      Torque Sequence

   3. Position the exhaust manifolds into place and install at least one Tooling (A) in each exhaust manifold.

   4. Apply Tooling (B) on the threads of the new nuts (7). Tighten nuts (7) in the above sequence to a torque of 20 ± 3 N·m (15 ± 2 lb ft). Tighten nuts (7) again in the above sequence to a torque of 38 ± 5 N·m (28 ± 4 lb ft).

   5. Tighten clamp assemblies (12) and (5) to a torque of 7.5 ± 1 N·m (66 ± 9 lb in).

   6. Tighten nuts (6) to a torque of 5 ± 1 N·m (44 ± 9 lb in).

   7. Apply Tooling (B) to temperature sensors (4). Tighten temperature sensors (4) to a torque of 45 ± 5 N·m (33 ± 4 lb ft).