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. Refer to this Disassembly and Assembly Manual, "Flywheel Housing - Remove and Install".

4. Remove the crankshaft rear seal. Refer to this Disassembly and Assembly Manual, "Crankshaft Rear Seal - Remove".

5. Remove the front housing. Refer to this Disassembly and Assembly Manual, "Housing (Front) - Remove".

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Illustration 1	g00975296
Typical example

1. Remove the Allen head screws (1) from the bridge (2).

2. Remove the bridge (2) from the cylinder block.

   Note: Make sure that the main bearing caps (4) and the connecting rod caps (6) are marked for the location and direction for installation.

   Note: This procedure assumes that the engine has been removed from the application and that the engine has been inverted. If the engine is not inverted or if the bottom end of the engine has not been moved through at least 90 degrees horizontally, remove the connecting rods from the cylinder bores. Refer to this Disassembly and Assembly Manual, "Pistons and Connecting Rods - Remove" for further information. Proceed to Step 6.

3. If the engine has been inverted or if the bottom end of the engine has been moved through at least 90 degrees horizontally, remove the setscrews (5) from the connecting rods. Discard the setscrews (5).

   Note: Do not reuse the setscrews (5). Use new setscrews in order to secure the connecting rod cap for reassembly.

4. Remove the connecting rod bearing caps (6) from the connecting rods. Remove the bearing shells from the connecting rod bearing caps. Keep the bearing shell for the connecting rod cap with the appropriate connecting rod cap.
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   NOTICE
   Do not allow the connecting rods to strike the piston cooling jets. Damage or misalignment may occur.

5. Push the piston assemblies into the cylinder bores.

   Note: This procedure assumes that the engine has been removed from the application and that the engine has been inverted. If the engine has not been inverted, ensure that the crankshaft is fully supported before removing the setscrews (3) for the main bearing caps (4).

6. Remove the setscrews (3) from the main bearing caps (4).
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   Illustration 2	g00975478

7. Remove the main bearing caps (4) from the cylinder block. Remove the bearing shells (8) from the main bearing caps (4). Keep the main bearing shells (8) with the respective main bearing cap (4).

8. Attach lifting straps and a suitable lifting device to the crankshaft. Lift the crankshaft out of the cylinder block. Take care to ensure that you do not scratch any of the finished surfaces on the crankshaft.
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   Illustration 3	g00975313

9. Remove the upper main bearing shells (7). Keep the upper main bearing shells with the respective main bearing caps (4).

   Note: Thrust washers (9) and (10) 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 and the center main bearing of the four cylinder engine. The removal procedure is identical for the three cylinder and the four cylinder engines. The appropriate illustrations show the four cylinder engine.

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   Illustration 4	g01026869
   Typical example

10. Remove the upper thrust washers (9) from the appropriate main bearing block.
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    Illustration 5	g01026870
    Typical example

11. Remove the lower thrust washers (10) from the appropriate main bearing cap.