3056E Industrial Engine Caterpillar

Removal Procedure

Start By:

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

1. Remove the tube assembly that supplies the turbocharger with engine oil.
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   Illustration 1	g00935363

2. Remove bolts (1) in order to remove the exhaust manifold.

3. Remove the exhaust manifold gaskets from the cylinder head and the exhaust manifolds.

4. If necessary, remove exhaust manifold (2) from exhaust manifold (3). Clean the ends of the exhaust manifolds for reassembly.

Installation Procedure

Note: Improper installation of the exhaust manifold can result in a cracked exhaust manifold. The exhaust manifold must be carefully centered on the guide bolts while the bolts are tightened.

Note: If an exhaust manifold bolt has become loose, or an exhaust manifold bolt must be loosened, all of the exhaust manifold bolts must be loosened. The exhaust manifold bolts must be tightened in the correct sequence and to the correct torque.

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Illustration 2	g00935350

1. Install Tooling (A) in the cylinder head in Hole (X).

   Note: Do Not use any sealant on the exhaust manifold gaskets.

   Note: New bolts have sealant to the first 13 mm (0.5 inch) of the threads. In order to reuse the old bolts, clean the old sealant from the bolts and apply Tooling (B) to the bolts.

2. Position the exhaust manifold gaskets on the guide bolts in the cylinder head. Assemble exhaust manifold (2) to exhaust manifold (3). Position the assembled exhaust manifold on the guide bolts. Install bolts (1) in order to secure the exhaust manifolds to the cylinder head.

3. Tighten bolts (1) to a torque of 12 N·m (9 lb ft). Tighten the bolts in the sequence that is shown in Illustration 2.

4. Remove Tooling (A). Install the remaining bolts (1) and tighten the bolts to a torque of 12 N·m (9 lb ft).

5. Tighten bolts (1) to a torque of 33 N·m (24 lb ft). Tighten the bolts in the sequence that is shown in Illustration 2.

6. Tighten the bolts (1) again to a torque of 33 N·m (24 lb ft).

7. Install the tube assembly that supplies the turbocharger with engine oil.

End By:

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