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1106 Perkins - Connecting Rod Bearings (Remove and Install)

Removal Procedure

Remove the 1106 Perkins engine oil pump. Use Tooling to rotate the crankshaft until the crank pin is at the bottom center position.

The connecting rod and the connecting rod cap should have an etched number (X) on the side. The number on the connecting rod and the connecting rod cap must match. If necessary, make a temporary mark on the connecting rod (5) and the connecting rod cap (2) in order to identify the cylinder number. Do not punch identification marks onto fracture split connecting rods.

Do not stamp identification marks onto fracture split connecting rods. Remove the two setscrews (1) and the connecting rod cap (2) from the connecting rod (5). Discard the setscrews (1). Remove the lower bearing shell (3) from the connecting rod cap (2). Keep the bearing shell and the connecting rod cap together.

Carefully push the connecting rod (5) into the cylinder bore until the connecting rod (5) is clear of the crankshaft. Remove the upper bearing shell (4) from the connecting rod. Keep the bearing shells together. Do not push on the fracture split surfaces of the connecting rod as damage may result.

Do not allow the connecting rod to contact the piston cooling jet. Repeat Steps for the remaining bearing shells. Fracture split connecting rods should not be left without the connecting rod caps installed.

Installation Procedure

Inspect the pins of the crankshaft for damage. If the crankshaft is damaged, replace the crankshaft.

Install:
- the upper bearing shell (4) into the connecting rod (5). Ensure that the locating tab for the upper bearing shell is correctly seated in the slot in the connecting rod. The ends of the upper bearing shell must be centered in the connecting rod. The ends of the upper bearing shell must be equally positioned in relation to the mating faces of the connecting rod.

Lubricate the upper bearing shell (4) with clean engine oil. Use Tooling to rotate the crankshaft until the crankshaft pin is at the bottom dead center position. Carefully pull the connecting rod (5) against the crankshaft pin. Do not allow the connecting rod to contact the piston cooling jet. Clean connecting rod cap (2).

- the lower bearing shell (3) into the connecting rod cap (2). Ensure that the locating tab for the lower bearing shell is correctly seated in the slot in the connecting rod cap. The ends of the lower bearing shell must be centered in the connecting rod cap. The ends of the lower bearing shell must be equally positioned in relation to the mating faces of the connecting rod cap. Lubricate the pin of the crankshaft and lubricate the lower bearing shell (3) with clean engine oil.

- the connecting rod cap (2) to the connecting rod (5). Ensure that the etched number (X) on connecting rod cap (2) matches the etched number (X) on connecting rod (5). Ensure the correct orientation of the connecting rod cap. The locating tab for the upper bearing shell and the lower bearing shell should be on the same side.

- two new setscrews (1) to the connecting rod. Tighten the setscrews evenly to a torque of 18 Nm (13 lb ft). Do not reuse the old setscrews in order to secure the connecting rod cap. Tighten the setscrews evenly to a torque of 70 Nm (52 lb ft). Turn the setscrews through an additional 120 degrees.

Use Tooling to achieve the correct final torque. Ensure that the installed connecting rod assembly has tactile side play. Rotate the crankshaft in order to ensure that there is no binding. Repeat Steps for the remaining connecting rod bearings.
- the engine oil pump.

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