C7.1 Industrial Engine Caterpillar

Removal Procedure of Type A Wet Back-End Housing

Start By:

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

Note: The wet back-end flywheel housing may be installed on standard engines. When installing a wet back-end flywheel housing, to a standard engine a seal will not be installed to the flywheel housing.

1. There are five types of flywheel housing that can be installed on the engine. The removal procedures for all types of flywheel housing are similar but all the installation procedures are different.

   Ensure that you use the correct procedure and the correct grades of bolts for your application.

   Show/hide table

   Illustration 1	g03742445
   Type A Wet Back-End Housing

   Show/hide table

   Illustration 2	g06053393
   Type A Wet Back-End Housing

2. Remove bolts (2) from Positions (X) in flywheel housing (3).

3. Install Tooling (A) into Position (X) to flywheel housing (3).

4. Install a suitable lifting device onto flywheel housing (3) to support the flywheel housing. The weight of the flywheel housing is approximately 40 kg (88 lb).

5. Remove remaining bolts (2) from flywheel housing (3).

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

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

   Illustration 3	g03742576
   Typical example

   Show/hide table

   Illustration 4	g03743025
   Typical example

8. Remove dust seal (6).

9. If equipped, remove gasket (7).

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

11. If equipped, remove oil seal (8) from flywheel housing (3).

Installation Procedure of Type A Wet Back-End Housing

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

   Ensure that the crankshaft palm is free from oil and grease.

   Show/hide table

   Illustration 5	g06053402
   Typical example

   Show/hide table

   Illustration 6	g06053427
   Positions for Tooling (A).

2. Install a new oil seal (8) to flywheel housing (3). Press the new oil seal into the flywheel housing from the rear. Ensure that the front edge of the oil seal is flush with the gasket surface of the flywheel housing.

3. Inspect the crankshaft rear seal 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" for the correct procedures.

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

5. Install Tooling (A) in Positions (X) to the cylinder block.

6. If necessary, install new gasket (7) onto Tooling (A).

7. Install new dust seal (6).
   Show/hide table

   Illustration 7	g06053454
   Type A flywheel housing Bolts (1) are 16 mm Bolts (2) are 10 mm Bolts (4) are 12 mm

   Show/hide table

   Illustration 8	g03735134
   Tightening sequence of Type (A) flywheel housing

8. Ensure that bolts (1), bolts (2) and bolts (4) are clean and free from oil and grease. Ensure that all threaded holes in the cylinder block are clean and free from oil and grease.

   The threads of the bolts and the threads in the cylinder block must be clean and dry to prevent too higher torque being applied.

9. Install a suitable lifting device onto the flywheel housing. The weight of the flywheel housing is approximately 40 kg (88 lb).

10. Use the lifting device to align flywheel housing (3) with Tooling (A). Install the flywheel housing to the cylinder block.

11. Install bolts (1), bolts (2), and bolts (4) to the flywheel housing.

12. Remove Tooling (A). Install remaining bolts (2).

13. Follow Step 13.a through Step 13.c to tighten bolts (1), bolts (2), and bolts (4) in the tightening sequence that is shown in Illustration 8.

    1. Tighten bolts (1) to a torque of 190 N·m (140 lb ft).

    2. Tighten bolts (2) to a torque of 63 N·m (46 lb ft).

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

14. Check the alignment of flywheel housing (3) with the crankshaft. Refer to System Operation, Testing and Adjusting, "Flywheel Housing - Inspect" for more information.

End By:

1. Install the flywheel. Refer to Disassembly and Assembly, "Flywheel - Install" for the correct procedure.