C6.6 Engines for Caterpillar Built Machines Flywheel Housing - Remove and Install - Wet Back End Housing Caterpillar

Removal Procedure

Start By:

1. Remove the flywheel. Refer to Disassembly and Assembly, "Flywheel - Remove".

1. Install a suitable lifting device to the flywheel housing in order to support the flywheel housing. The flywheel housing can weigh 32 kg (70.5 lb).
   Show/hide table

   Illustration 1	g01337602
   Typical example

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

3. Use the lifting device in order to remove flywheel housing (1) from the cylinder block.
   Show/hide table

   Illustration 2	g01337603
   Typical example

4. If the engine has an aluminum oil pan, remove dust seal (6).
   Show/hide table

   Illustration 3	g01337605
   Typical example

5. Remove joint (7).

6. If necessary, remove dowels (5) from the cylinder block.

7. Remove oil seal (8) from flywheel housing (1).

Installation Procedure (Wet Back End Housing)

1. Ensure that the flywheel housing is clean and free from damage. If necessary, replace the flywheel housing.
   Show/hide table

   Illustration 4	g01337605
   Typical example

2. Install a new oil seal (8) to flywheel housing (1).

   Note: Press the oil seal into the flywheel housing from the rear. Ensure that the front edge of the oil seal is flush with the joint face of the flywheel housing .

3. Inspect crankshaft rear seal (9) 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".
   Show/hide table

   Illustration 5	g01337609
   Engine with an aluminum oil pan

   Show/hide table

   Illustration 6	g01337610
   Engine with cast iron oil pan

4. Clean the rear face of the cylinder block. If necessary, install dowels (5) to the cylinder block.

5. Install Tooling (A) to the cylinder block.

6. Align a new joint (7) with Tooling (A). Install the joint to the cylinder block.

7. If the engine has an aluminum oil pan, install dust seal (6).

   If the engine has a cast iron oil pan, apply a bead of Tooling (B) to positions (X).

8. Install a suitable lifting device to the flywheel housing. The flywheel housing can weigh 32 kg (70.5 lb).
   Show/hide table

   Illustration 7	g01337602
   Typical example

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

10. Install bolts (2), bolts (4) and bolts (3).

11. Remove Tooling (A). Install remaining bolts (3).

12. Tighten bolts (2) to a torque of 190 N·m (140 lb ft).

    Tighten bolts (4) to a torque of 115 N·m (85 lb ft).

    Tighten bolts (3) to a torque of 63 N·m (46 lb ft).

13. 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. Refer to Disassembly and Assembly, "Flywheel - Install".