C9.3 Engines for Caterpillar Built Machines Exhaust Manifold - Remove and Install Caterpillar

Removal Procedure

Start By:

1. Remove the turbocharger.

2. Remove the exhaust cooler.

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Illustration 1	g06107275

1. Remove locknuts (1) and remove the spacers. Discard all locknuts (1).

2. Remove manifold assembly (2).
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   Illustration 2	g06107776

   Note: Note the orientation of the exhaust manifold sections for use in installation procedure.

3. Remove studs (7).

4. Separate manifold sections (3), (4), and (5). Remove and discard gaskets (6).

Installation Procedure

1. Install manifold assembly (2) in the reverse order of removal.

   1. Apply a thin coat of Tooling (A) to the outside of the male ends of manifold sections (5) and (3). Assemble manifold sections (3), (4), and (5), as shown.

   2. Apply Tooling (B) on the threads of studs (7) . Install and tighten studs (7) to a torque of 35 ± 5 N·m (26 ± 4 lb ft).

   3. Install new gaskets (6) with the tabs facing down.

   4. Apply Tooling (B) on the threads of new locknuts (1). Install the locknuts.
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      Illustration 3	g01381130
      Torque Sequence

   5. Use the above sequence to tighten locknuts (1) (represented by Callout (X)) to a torque of 55 ± 5 N·m (41 ± 4 lb ft).