Removal Procedure
Start By:
- Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install".
| NOTICE |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
| NOTICE |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
- Remove bolt (2) and two bolts (1) that hold the engine oil relief valve in position.
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| Illustration 1 | g00550759 |
Typical example | |
- Remove the engine oil relief valve in order to gain access to the connecting rods.
- Remove two bolts (4) that fasten the oil line to the engine oil pump. Remove bolt (3) that holds the oil strainer in position.
- Remove the oil strainer and the oil line in order to gain access to the connecting rods.
- In order to remove the connecting rod caps, turn the crankshaft in a clockwise direction until the piston is at the bottom center position.
- If you have Type A connecting rods, remove two nuts (9) and two bolts (10) that fasten the connecting rod cap to the connecting rod. If you have Type B connecting rods, remove two bolts (11) that fasten the connecting rod cap to the connecting rod.
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| Illustration 2 | g00551183 |
Type A connecting rod. | |
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| Illustration 3 | g00551189 |
Type B connecting rod. | |
Note: There are two types of connecting rods that may be used in the engine. Type A connecting rods have serrated mating faces on the connecting rod and the connecting rod cap. Type A connecting rods are held together with a through bolt and a nut. Type B connecting rods have an alignment pin in the connecting rod cap. Type B connecting rods are held together with a bolt that is threaded into the connecting rod.
- Remove connecting rod cap (8) from the connecting rod.
- Remove lower connecting rod bearing (5). Keep the connecting rod bearings together with the respective connecting rod caps for installation purposes.
- Carefully push the connecting rod into the cylinder liner in order to remove upper connecting rod bearing (6). The connecting rod may need to be rotated in order to prevent contact with the piston cooling jet.
- Remove upper connecting rod bearing (6). Keep the connecting rod bearings together with the respective connecting rods for installation purposes.
- Repeat Steps 5 through 9 for the remaining connecting rod bearings.