Piston

Piston













Disassembly

1. Remove the connecting rod bearings from the connecting rod and cap.

2. Remove the piston rings from the piston.
- Discard the piston rings.


3. NOTE: If the piston and connecting rod are to be reinstalled, they must be assembled in the same orientation. Mark the piston orientation to the connecting rod for reassembly.

NOTE: Use a portable multipurpose press (such as OTC(R) 5180 or equivalent).
Using the portable multipurpose press, press the piston pin out of the connecting rod and piston assembly.


4. Separate the piston from the connecting rod.

5. Clean and inspect the piston and connecting rod.

Assembly

1. NOTE: Lubricate all parts with clean engine oil.
Gradually heat the pin bore side of the connecting rod to approximately 300°C (572°F).


2. Align the piston-to-connecting rod orientation marks, and immediately install the piston pin.

3. Using the portable multipurpose press, press the piston pin into the piston and connecting rod assembly.

4. NOTE: The upper and lower compression rings are to be fitted with the identification marks on the upper side.
Install the piston rings.


5. Make sure the ring gaps (oil spacer- A, oil ring- B, compression ring- C) are correctly spaced around the circumference of the piston.