C15 Petroleum Engines Caterpillar


Exhaust Manifold - Remove and Install

Usage:

C15 HAZ

Removal Procedure

Start By:

  1. Remove the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove".


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 1g02433136

  1. Remove bolts (4). Remove bolts (2) from flange (5). Remove elbow (1) from exhaust manifold assembly (3).

  2. Remove the O-ring seals from elbow (1). Remove gasket (6) from exhaust manifold assembly (3).


    Illustration 2g02433137

  3. Remove the locknuts and spacers from taperlock studs (7). Remove exhaust manifold assembly (3) from the cylinder head.

  4. Remove coupling (8) from the exhaust manifold assembly. Remove the O-ring seals from the coupling.

  5. Remove exhaust manifold gaskets (10) from the cylinder head.

  6. If necessary, remove taperlock studs (9) from exhaust manifold assembly (3).

Installation Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
5P-3931  Anti-Seize Compound 
1U-6396  O-Ring Assembly Compound 


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 3g02433137

  1. If necessary, install taperlock studs (9) in exhaust manifold assembly (3) and tighten to a torque of 35 ± 5 N·m (26 ± 4 lb ft).

  2. Install exhaust manifold gaskets (10) on taperlock studs (7).

  3. Apply Tooling (A) to the threads of taperlock studs (7).

  4. Install the O-ring seals on coupling (8). Apply Tooling (B) to the O-ring seals. Install coupling (8) in the exhaust manifold assembly.

    Note: Discard the locknuts after use. Use new locknuts for installation.

  5. Install exhaust manifold assembly (3) in position on taperlock studs (9). Install the spacers and locknuts finger tight.


    Illustration 4g00592627
    Tightening sequence

  6. Tighten the locknuts for the taperlock studs in a numeric sequence to a torque of 50 ± 5 N·m (37 ± 4 lb ft).


    Illustration 5g02433136

  7. Install the O-ring seals on elbow (1).

  8. Position gasket (6), elbow (1), and flange (5) on exhaust manifold assembly (3).

  9. Install bolts (2) and bolts (4).

End By:

  1. Install the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Install".

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