C4.4 Marine Generator Set Caterpillar

Removal Procedure

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Illustration 1	g03717618

1. If necessary, follow Step 1.a through Step 1.c in order to remove cover (1).

   1. Remove caps (3) from nuts (4) (not shown).

   2. Remove nuts (4) (not shown) and washers (2) from cover (1).

   3. Remove cover (1).
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   Illustration 2	g03717616

2. Cut cable straps (8).
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   NOTICE
   When disconnecting and connecting the plastic tube assemblies for the crankcase breather system, the plastic tube assemblies should not be twisted. Twisting of the plastic tube assemblies will result in the seals being damaged. Damaged to seals will result in leakage.

3. Disconnect plastic tube assembly (7) from valve mechanism cover (6).

4. Remove bolt (5) from valve mechanism cover (6).

5. Remove valve mechanism cover (6) from the cylinder head.

   Note: Remove the valve mechanism cover vertically to avoid damage to the electronic unit injectors.

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   Illustration 3	g03717617

6. Remove gasket (8) from valve mechanism cover (6).

Installation Procedure

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Illustration 4	g03717617

1. Thoroughly clean all gasket surfaces and the groove of valve mechanism cover (6). Clean the gasket surfaces of the cylinder head.

2. Install a new gasket (8) to valve mechanism cover (6). Ensure that the gasket is fully seated into the groove of the valve mechanism cover.
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   Illustration 5	g03721605

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   Illustration 6	g03717616

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   Illustration 7	g03721606

3. Ensure that harness assemblies (10) are not in contact with rocker arms (9) or cylinder head (11).

   Note: Install the valve mechanism cover vertically to avoid damage to the electronic unit injectors.

4. Position valve mechanism cover (6) onto cylinder head (11). Ensure that harness assemblies (10) are not trapped during the assembly procedure.

5. Install bolts (5). Tighten the bolts in the numerical sequence that is shown in Illustration 7. Tighten the bolts to a torque of 9 N·m (79 lb in). Repeat Step 5 in order to ensure correct torque.
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   NOTICE
   When disconnecting and connecting the plastic tube assemblies for the crankcase breather system, the plastic tube assemblies should not be twisted. Twisting of the plastic tube assemblies will result in the seals being damaged. Damaged to seals will result in leakage.

6. Connect plastic tube assembly (7) to valve mechanism cover (6).

7. Install new cable straps (8).

   Note: Ensure that the cable straps meet Original Equipment Manufacture (OEM) specification.

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   Illustration 8	g03717618

8. If necessary, follow Step 8.a through Step 8.c in order to install cover (1).

   1. Install cover (1).

   2. Position washers (2) onto cover (1). Install nuts (4) (not shown). Tighten the nuts to a torque of 9 N·m (80 lb in).

   3. Install caps (3) to nuts (4) (not shown).