TUBE AS 9W4888 - Caterpillar

Removal Procedure
Start By:
Disconnect the crankcase breather or remove the crankcase breather. Refer to Disassembly and Assembly, "Crankcase Breather - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01788614
If the valve mechanism cover is equipped with a heat shield, remove bolts (1) and washers (3) from heat shield (2). Note: The washers are two different sizes. Note the position of the washers for installation purposes.
Remove heat shield (2).
Illustration 2 g01788720
Typical example
Remove bolts (4) and bolts (5) from valve mechanism cover (6).
Remove valve mechanism cover (6) from the valve mechanism cover base.
Remove gasket (7) from valve mechanism cover (6). Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Thoroughly clean the valve mechanism cover. Clean the faces of the valve mechanism cover base.
Illustration 3 g01788720
Typical example
Install a new gasket (7) to valve mechanism cover (6). Note: Ensure that the gasket is fully seated into the groove of the valve mechanism cover.
Illustration 4 g01788815
Typical example
Ensure that harness assemblies (9) are not in contact with the rocker arms or in contact with the valve mechanism cover base. Position valve mechanism cover (6) onto valve mechanism cover base (8). Ensure that harness assemblies (9) are not trapped during the assembly procedure. Install bolts (4) and bolts (5).
Illustration 5 g01245162
Tightening sequence for the valve mechanism cover
Tighten bolts (4) and bolts (5) in the numerical sequence that is shown in Illustration 5. Tighten the bolts to a torque of 6 N m (53 lb in).
Illustration 6 g01788614
If necessary, position heat shield (2) onto the valve mechanism cover.
Install bolts (1) and washers (3). Tighten the bolts to a torque of 9 N m (80 lb in). End By:
Connect the crankcase breather or install the crankcase breather. Refer to Disassembly and Assembly, "Crankcase Breather - Remove and Install".