4.6 Set of pistons, gudgeon pins and seals (replace

Remove the piston rings. Release the pin (2 a) and separate the connecting rods (2b) from the piston (2c).

Remove the piston rings (1 a) from the pistons using a suitable tool (1b).

Check the alignment of the connecting rods using suitable equipment; if it is not correct, replace the connecting rod.

Check that the weight difference between the pistons corresponds to the recommended figures. The arrows in the diagram illustrate where material can be removed from the to equalize the weight.

Engine piston set

Weight difference between pistons ± 5g

Weight difference between connecting rods ± 2.5g

Join the connecting rods to the pistons so that the number printed on the connecting rod head (1 a) is facing notch (1b) on the piston skirt for the oil jet housing. Fit the pins and secure them using the cir-clips.