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


Flywheel Housing - Remove and Install - Wet Back End Housing
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1.1. Removal Procedure
2.1. Installation Procedure (Wet Back End Housing)

Removal Procedure

Start By:

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


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


  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).


    Illustration 1g01337602
    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.


    Illustration 2g01337603
    Typical example

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


    Illustration 3g01337605
    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)

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
Guide Stud
(M10 by 100 mm) 
1U-8846  Gasket Sealant 


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


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


    Illustration 4g01337605
    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".


    Illustration 5g01337609
    Engine with an aluminum oil pan


    Illustration 6g01337610
    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).


    Illustration 7g01337602
    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".

Information System:

C6.6 Engines for Caterpillar Built Machines Flywheel Housing - Remove and Install - Standard Housing
C6.6 Engines for Caterpillar Built Machines Crankshaft Rear Seal - Install
C6.6 Engines for Caterpillar Built Machines Crankshaft Rear Seal - Remove
C6.6 Engines for Caterpillar Built Machines Flywheel - Install
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