3025999 - 1028H60 piston, pin set - replace

1. Remove the circlips.2. Remove the pins (2a) and separate the connecting rods (2b) from the pistons (2c).3. Remove the piston rings (3a) from the pistons using a suitable tool (3b). Check the alignment of the connecting rods using a suitable tool; if the connecting rod is not perfectly aligned, replace it.Check that the difference in weight between the connecting rods, complete with bearing shells, caps and bolts, is within the recommended values.

The arrows in the diagram show the areas from where material can be removed in order to equalize the weight.

	Measurement		Value
-	Maximum difference in weight between connecting rods (g.)		± 5

Check that the difference in weight between the pistons is within the recommended values.

The arrows in the diagram show the areas from where material can be removed in order to equalize the weight.

	Measurement		Value
-	Maximum difference in weight between pistons (g.)		± 5

Fit the piston rings on the pistons using a suitable tool.

Fit the piston rings on the piston so that the word TOP stamped on them is turned toward the piston crown.

From September 2003, piston rings with a modified profile will be used. The piston ring for the 1st groove and the piston ring for the 2nd groove are the same thickness (1.19 mm); follow the diagram shown below to fit them correctly.

Assemble the connecting rods with the corresponding pistons so that the number stamped on the small end faces the large notches (for inlet valves) on the piston crown.Fit the pin and secure it with its circlips.