Cleaning pistons and connecting rods

1. Remove carbon deposits from the piston crown and piston ring grooves, and remove any deposits from the piston and connecting rod oil passages.

2. Check carefully for damage on the parts. Cracks of any nature on the piston, piston rings, pin, connecting rod and cap are unacceptable and require replacement parts. If there are deep marks on the working surface of the liners or they are too worn, replace the liners with new ones.