Remove
- 1. Remove piston with con-rod
- 2. Clamp piston with con-rod in vice
Note. Use protective jaws
- 3. Remove 3x piston rings • Remove spiral-type expander of oil scraper ring from piston ring groove
Note. Remove piston rings with piston ring pliers (1). Pay attention to piston ring assignments
- 4. Clean ring grooves
Note. Remove residue of carbonised oil from piston ring groove with a broken and ground piston ring
Measure
- 5. Measure gap • Insert 3x new piston rings in cylinder • Measure joint play with feeler gauge
- 6. Measure vertical play • Insert 3x new piston rings into piston ring groove • Measure vertical play with feeler gauge
Note. Pay attention to marks (arrow) on compression rings
Install
- 7. Install 3x piston rings with piston ring pliers • Insert spiral-type expander of oil scraper ring into piston ring groove • Install oil scraper ring • Install 2x compression rings
Note. Pay attention to marks on compression rings
- 8. Remove piston with con-rod from vice
- 9. Fit pistons with con-rods