Piston, Connecting Rod, and Bearing Replacement - LE5 or LE9
Special Tools
• | J 41742 Connecting Rod Guide Pin |
• | J 43953 Piston Ring Compressor |
• | J 43966-1 Connecting Rod Guides |
Removal Procedure
- Remove the sump. Refer to
Sump Replacement : LE5 or LE9 .
- Remove the cylinder head. Refer to
Cylinder Head Replacement : LE5 or LE9 .
- If a ring ridge is present, remove the ring ridge as follows:
3.1. | Turn the crankshaft until the piston is at the bottom of the stroke. |
3.2. | Place a cloth on top of the piston. |
3.3. | Use a ridge reamer to remove the ring ridge. |
3.4. | Turn the crankshaft so the piston is at top of the stroke. |
3.5. | Remove the cloth and cutting debris. |
Note: Place the numbers on connecting rods and the connecting rod caps. The connecting rod caps must be assembled to their original connecting rods.
- Remove the connecting rod nuts and the connecting rod cap.
Discard the bolts and nuts.
- Remove the connecting rod and the piston out of the top of the engine block using the J 41742 and J-43966-1 .
- Clean the cylinder bores with hot water and detergent or with a light honing.
- Swab the bores with the engine oil and a clean, dry cloth.
Installation Procedure
- Coat the following parts with engine oil:
- Install the piston into its original bore using the J-43966-1 , J 43953 and J 41742 .
- Lightly tap the top of the piston with a wooden hammer handle.
- When installing the piston and the connecting rod, the stamped mark on the piston must point to the front of the engine.
- Hold the J 43953 firmly against the engine block until all the piston rings have entered the cylinder bore.
- Install the connecting rod caps onto their original connecting rods.
- Align the numbers placed on the connecting rod and the connecting rod cap during removal.
- Install the new connecting rod bolts and nuts and tighten.
Caution: Refer to Fastener Caution in the Preface section.
- On the first pass, tighten the nuts evenly to 25 N·m (18 lb ft).
- On the final pass, use the J 45059 in order to tighten the nuts an additional 100 degrees.
- Measure the connecting rod side clearance with a feeler gauge .
The correct clearance is 0.070-0.370 mm (0.0027-0.0145 in).
- Install the cylinder head. Refer to
Cylinder Head Replacement : LE5 or LE9 .
- Install the oil pan. Refer to
Sump Replacement : LE5 or LE9 .
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