C9 Marine Engines and C9 Marine Generator Sets Caterpillar


Pistons and Connecting Rods - Remove

Usage:

C9 C9A

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
9S-9082  Engine Turning Tool 

Start By:

  1. Remove the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Remove".

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

  3. Remove the piston cooling jets. Refer to Disassembly and Assembly, "Piston Cooling Jets - Remove and Install".


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.



NOTICE

The joint between the connecting rod and the connecting rod cap is produced by fracturing. The connecting rod assembly must be handled with care in order to avoid damage to the mating surfaces. The connecting rod assembly must be replaced if any damage occurs to the mating surfaces. New connecting rod assemblies come with the connecting rod caps bolted on the connecting rod.

Use only a soft faced hammer to tap the connecting rod cap when separating the connecting rod cap from the connecting rod.

Failure to use a soft faced hammer may result in damage to the fractured surfaces of the connecting rod assembly.


  1. Remove the carbon from the top of the cylinder liner.


    Illustration 1g01144114

  2. Use Tooling (A) to rotate the crankshaft until connecting rod cap (1) is at the bottom center.

  3. Inspect the connecting rod and connecting rod cap (1) for the proper identification mark. The connecting rod and the connecting rod cap (1) should have an etched number on the side that is toward the camshaft. The number should match the cylinder number. Mark the connecting rod and the connecting rod cap, if necessary.

  4. Loosen connecting rod bolts (2). Remove the connecting rod bolts and connecting rod cap (1).

    Note: This engine has fractured connecting rods. Fractured connecting rods must be handled with care. Use a soft faced hammer in order to tap the connecting rod cap, if necessary.

    Note: Do not place the fractured faces of the connecting rod cap on any surface. The connecting rod cap must be laid flat on the side in order to prevent damage to the fractured faces of the connecting rod cap.

  5. If necessary, remove the lower half of connecting rod bearing (3) from connecting rod cap (1).

  6. Push the piston and the connecting rod away from the crankshaft. Remove the piston and the connecting rod from the cylinder liner.

    Note: Do not damage the fractured faces of the connecting rod. Place a suitable protective cap on the ends of the connecting rod in order to prevent damage to the fractured faces of the connecting rod.

  7. If necessary, remove the upper half of connecting rod bearing (4) from connecting rod (5).

  8. Assemble the connecting rod cap and the connecting rod and install the bolts finger tight in order to protect the fractured faces of the connecting rod and the connecting rod cap.

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