3126B Petroleum Engine Caterpillar

Removal Procedure

Start By:

1. Remove the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove".
2. Remove the water temperature regulator housing. Refer to Disassembly and Assembly, "Water Temperature Regulator Housing - Remove and Install".

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NOTICE
Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

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Illustration 1	g01181888

1. Disconnect hose assembly (1), hose (2), and hose (3) .

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Illustration 2	g01181881

2. Remove bolts (6), exhaust manifold (5), and gasket (4) from the cylinder head assembly.

Installation Procedure

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Illustration 3	g01181881

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Illustration 4	g01181922

1. Position gasket (4) and exhaust manifold (5) on the cylinder block. Install bolts (6) .

2. Tighten bolts (6) according to the following procedure.

   1. Tighten Bolt (1) through Bolt (12) in a numerical sequence to a torque of 4 ± 1 N·m (35 ± 9 lb in).

   2. Tighten Bolt (1) through Bolt (12) in a numerical sequence to a torque of 55 ± 5 N·m (41 ± 4 lb ft).

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Illustration 5	g01181888

3. Connect hose (3), hose (2), and hose assembly (1) .

End By:

1. Install the water temperature regulator housing. Refer to Disassembly and Assembly, "Water Temperature Regulator Housing - Remove and Install".
2. Install the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Install".