C7.1 Marine Engine Caterpillar

Removal Procedure

Start By:

1. Remove the flywheel.

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Illustration 1	g01528466
Typical example

1. Remove the bolts from Position (X) from flywheel housing (1).

2. Install Tooling (A) into Position (X) on flywheel housing (1).

3. Install a suitable lifting device to flywheel housing (1) in order to support the flywheel housing. The weight of flywheel housing (1) is approximately 32 kg (70 lb).
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   Illustration 2	g01786593

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   Illustration 3	g01337565

4. Remove bolts (2) and remaining bolts (3) from flywheel housing (1).

5. Use the lifting device to remove flywheel housing (1) from the cylinder block.

6. Remove dust seal (5). If necessary, remove dowels (4) from the cylinder block.

Installation Procedure

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Illustration 4	g01786598

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Illustration 5	g01528467

1. Inspect crankshaft rear seal (8) for leaks. If there are any oil leaks, replace the crankshaft rear seal. Refer to Disassembly and Assembly, "Crankshaft Rear Seal - Remove" and refer to Disassembly and Assembly, "Crankshaft Rear Seal - Install".

2. Clean the rear face of the cylinder block. If necessary, install dowels (4) to the cylinder block.

3. Install Tooling (A) to the cylinder block. Install dust seal (5).

4. Install a suitable lifting device to flywheel housing (1). The weight of the flywheel housing (1) is approximately 32 kg (70 lb).

5. Use the lifting device to align flywheel housing (1) with Tooling (A). Install the flywheel housing to the cylinder block.

6. Apply Tooling (B) to the treads of bolts (2) and bolts (3). Install bolts (2) and bolts (3) to flywheel housing (1).

7. Remove Tooling (A). Install remaining bolts (3).
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   Illustration 6	g01787215

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   Illustration 7	g01786615

8. Tighten bolts (3) to a torque of 70 ± 15 N·m (52 ± 11 lb ft) in the sequence that is shown in Illustration 7.

9. Tighten bolts (2) to a torque of 240 ± 40 N·m (177 ± 30 lb ft) in the sequence that is shown in Illustration 7.

10. Check the alignment of flywheel housing (1) with the crankshaft. Refer to System Operation, Testing and Adjusting, "Flywheel Housing - Inspect".

End By:

1. Install the flywheel.