3408E and 3412E Engines for Caterpillar Built Machines Caterpillar

Installation Procedure

Note: Check the condition of the O-rings. If the O-rings are worn or damaged, use new parts for replacement. Always replace used gaskets with new gaskets.

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Illustration 1	g00545186

1. Install the O-ring seals on adapter (8). Lightly lubricate the bore of engine oil cooler (7) and the O-ring seals with engine oil. Install the adapter into the engine oil cooler.

2. Install the O-ring seals and put the engine oil cooler in position on the engine. Install bolts (9).
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   Illustration 2	g00545185

3. Install the O-ring seals on adapter (6). Install the O-ring seals on the engine oil cooler bonnet (4). Lightly lubricate the bore of engine oil cooler and the O-ring seals with engine oil.

4. Put gasket (5) in position . Put the engine oil cooler bonnet in position on the engine oil cooler.

5. Start the threads of bolts (3) loosely.
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   Illustration 3	g00545084

6. Put gasket (1) in position and install bolts (2).

7. Tighten bolts (3) to a torque of 55 ± 7 N·m (40 ± 5 lb ft).

8. Fill the engine to the correct level with coolant. See the Operation & Maintenance Manual for instructions on filling the engine with coolant.