3306B Industrial Engine Caterpillar

Removal Procedure

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Illustration 1	g00513507

1. Remove bolt (1) and breather cap (3) from valve mechanism cover (2). Remove the O-ring seal from breather cap (3) .

2. Remove bolts (4) and the washers that hold valve mechanism cover (2) in position. Remove valve mechanism cover (2) and the gasket.

Installation Procedure

Note: Check the condition of the gasket and O-ring seals. If the gasket or the O-ring seals are worn or damaged, use new parts for replacement.

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Illustration 2	g00513507

1. Install a new gasket for valve mechanism cover (2). Put valve mechanism cover (2) in position on the cylinder head.

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Illustration 3	g00450791

2. Install the washers and bolts (4) that hold valve mechanism cover (2) in position. Tighten the bolts in a numerical sequence to a torque of 16 ± 3 N·m (12 ± 2 lb in). Use the numerical sequence that is shown in illustration 3.

3. Put the O-ring seal and breather cap (3) in position. Install the washer and bolt (1). Tighten bolt (1) to a torque of 14 ± 3 N·m (10 ± 2 lb ft).