C3.3 Industrial Engine Caterpillar

Removal Procedure

Start By:

1. Remove the engine oil pan. Refer to this Disassembly and Assembly Manual, "Engine Oil Pan - Remove and Install".

2. Remove the engine oil pump. Refer to this Disassembly and Assembly Manual, "Engine Oil Pump - Remove".

3. Remove the flywheel housing in order to remove the rear main bearing with the crankshaft in position. Refer to this Disassembly and Assembly Manual, "Flywheel Housing - Remove and Install".

4. Remove the crankshaft rear seal in order to remove the rear main bearing with the crankshaft in position. Refer to this Disassembly and Assembly Manual, "Crankshaft Rear Seal - Remove".

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Illustration 1	g00947823

Note: The main bearings and the main bearing caps (2) must be installed in the same location when the engine is reassembled.

1. Make sure that the main bearing caps (2) are marked for the location and direction for installation.

2. Remove the setscrews (1) and the main bearing cap (2).
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   Illustration 2	g00934803

3. Remove the lower bearing shell (3) from the main bearing cap (2). Keep the respective bearing shell (3) and the main bearing cap (2) together for proper installation.
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   Illustration 3	g00934767

4. Push the upper bearing shell (4) from the opposite side of the bearing tab with a suitable tool. Carefully rotate the crankshaft while you push on the bearing shell (4). Remove the upper bearing shell (4) from the cylinder block. Keep all of the upper halves of the bearing shells (4) together in order to ensure proper installation.

5. Repeat Step 2 through Step 4 for the remaining main bearings.

   Note: Thrust washers (5) and (6) are installed onto one main bearing in order to limit crankshaft end play. These thrust washers are installed onto the No. 3 main bearing of the three cylinder engine.

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   Illustration 4	g00934744
   Typical example

6. Remove the lower half of the thrust washer (5) from each side of the appropriate main bearing cap.
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   Illustration 5	g00947753
   Typical example

7. Remove the upper half of the thrust washer (6) from each side of the appropriate main bearing in the cylinder block with a suitable tool. Carefully rotate the crankshaft while you push on the thrust washer (6). If necessary, move the crankshaft to the front or to the rear of the engine in order to loosen a tight thrust washer (6).