Wash connecting rods in cleaning solvent and dry with compressed air. Check for twisted or bent rods and inspect for nicks or cracks. Replace connecting rods that are damaged.
| Fig. 1: Clean the piston grooves using a ring groove
cleaner
|
| Fig. 2: You can use a piece of an old ring to clean the
piston grooves, BUT be careful, the ring is sharp
|
| Fig. 3: Measure the piston's outer diameter using a micrometer
|
Clean varnish from piston skirts and pins with a cleaning solvent. DO NOT WIRE BRUSH ANY PART OF THE PISTON. Clean the ring grooves with a groove cleaner and make sure oil ring holes and slots are clean.
Inspect the piston for cracked ring lands, skirts or pin bosses, wavy or worn ring lands, scuffed or damaged skirts, eroded areas at the top of the piston. Replace pistons that are damaged or show signs of excessive wear. Inspect the grooves for nicks or burrs that might cause the rings to hang up.
Measure piston skirt (across center line of piston pin) and check piston clearance.
