C7.

1 Marine Generator Set JME00001-UP(SEBP6463 - 32) - Documentation Page 1 of 6

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Product: GENERATOR SET

Disassembly and Assembly

i05249810

Connecting Rod Bearings - Remove and Install - Connecting

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1U-6684 Piston Ring Compressor 1
B 8T-3052 Degree Wheel 1

Start By:

a. Remove the engine oil pump.

NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.

NOTICE

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Discard all used Connecting Rod fasteners.

Note: If all connecting rod bearings require replacement, the procedure can be carried out on two
cylinders at the same time. The procedure can be carried out on the following pairs of cylinders. 1
with 6, 2 with 5 and 3 with 4. Ensure that both pairs of the connecting rod bearings are installed
before changing from one pair of cylinders to another pair of cylinders. Refer to Disassembly and
Assembly, "Connecting Rod Bearings - Install".

1. Rotate the crankshaft until the crank pin is at the bottom center position.

If necessary, remove the glow plugs. Refer to Disassembly and Assembly, "Glow Plugs -
Remove and Install".

Note: Removal of glow plug aids removal of the connecting rod bearing. Glow plug removal is
not essential.

Illustration 1 g01341291

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Illustration 2 g03372243

2. 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 connecting rod (1) and connecting rod cap (2) to identify the cylinder
number.

Note: Do not punch identification marks onto fracture split connecting rods. Do not stamp
identification marks onto fracture split connecting rods.

3. Remove bolts (3) and connecting rod cap (2) from connecting rod (1). Discard the bolts.

4. Remove lower bearing shell (4) from connecting rod cap (2). Keep the bearing shell and the
connecting rod cap together.

5. Carefully push connecting rod (1) into the cylinder bore until connecting rod (1) is clear of the
crankshaft. Remove upper bearing shell (5) from the connecting rod. Keep the bearing shells
together.

Note: Do not push against the fracture split surfaces of the connecting rod as damage may
result. Do not allow the connecting rod to contact the piston cooling jet.

6. Repeat Step 1 through Step 5 for the remaining bearing shells.

Note: Fracture split connecting rods should not be left without the connecting rod caps
installed. After the removal procedure for the bearing shells is complete, carry out the
installation procedure as soon as possible.

Installation Procedure
1. Inspect the pins of the crankshaft for damage. If the crankshaft is damaged, replace the
crankshaft. Refer to Disassembly and Assembly, "Crankshaft - Remove" and Disassembly and

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Assembly, "Crankshaft - Install". Ensure that the bearing shells are clean and free from wear or
damage. If necessary, replace the bearing shells.

Illustration 3 g03372243

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Illustration 4 g01341291

2. Install the upper bearing shell (5) into connecting rod (1). Ensure that the locating tab for the
upper bearing shell is correctly seated in the slot in the connecting rod.

Note: 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.

3. Lubricate upper bearing shell (5) with clean engine oil.

4. Rotate the crankshaft until the crankshaft pin is at the bottom dead center position.

5. Carefully pull connecting rod (1) against the crankshaft pin.

Note: Do not allow the connecting rod to contact the piston cooling jet.

6. Clean connecting rod cap (2). Install lower bearing shell (4) into 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.

Note: 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.

7. Lubricate the pin of the crankshaft and lubricate lower bearing shell (4) with clean engine oil.

8. Install connecting rod cap (2) to connecting rod (1).

Note: Ensure that etched Number (X) on connecting rod cap (2) matches etched Number (X) on
connecting rod (1). 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.

9. Install new bolts (3) to the connecting rod. Tighten the bolts evenly to a torque of 18 N·m
(13 lb ft).

Note: Do not reuse the old bolts to secure the connecting rod cap.

10. Tighten the bolts evenly to a torque of 70 N·m (52 lb ft).

11. Turn the bolts through an additional 120 degrees. Use Tooling (B) to achieve the correct final
torque.

12. Ensure that the installed connecting rod assembly has tactile side play. Rotate the crankshaft in
order to ensure that there is no binding.

13. Repeat Step 2 through Step 12 for the remaining connecting rod bearings.

Note: If all connecting rod bearings require replacement, the procedure can be carried out on
two cylinders at the same time. The procedure can be carried out on the following pairs of
cylinders. 1 with 6, 2 with 5 and 3 with 4. Ensure that both pairs of the connecting rod

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bearings are installed before changing from one pair of cylinders to another pair of
cylinders. Refer to Disassembly and Assembly, "Connecting Rod Bearings - Install".

End By:

a. Install the engine oil pump.

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