Removal Procedure
Start By:
- Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - 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. |
- Loosen eight bolts (1) that fasten the brackets for the rocker shaft (4) to the cylinder head. Begin with the inner bolts and work toward the outer bolts.
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| Illustration 1 | g00698000 |
- Loosen four nuts (3). Begin with the inner nuts and work toward the outer nuts.
Note: Rocker shaft brackets (4) contain three plates (2) that include the studs for the valve mechanism cover. The plates must be installed in the original location in order to install the valve mechanism cover.
- Remove bolts (1) and nuts (3) from the brackets for the rocker shaft (4) .
- Remove rocker shaft assembly (4) from the cylinder head.
Note: Roll pins (5) are installed in the brackets of rocker shaft (4) in order to align rocker shaft assembly (4) with oil holes (7) in the cylinder head. Oil holes (7) provide lubrication to rocker shaft assembly (4) .
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| Illustration 2 | g00590103 |
- Place an identification mark on each pushrod (6) in order to locate the pushrods for installation. Remove eight pushrods (6) from the engine.