W 250 Pickup L6-359 5.9L DSL (1989)
Piston: Service and Repair
Removal and Installation
Removal
PISTON AND ROD ASSEMBLY - REMOVAL
CAUTION: Make sure the ridge reamer does not make a deep cut into the bore. Do not remove more metal than is necessary to remove the ridge.
If the cylinder bores have ridges, use a ridge reamer to cut the ridge from the top of the cylinder bore before removing the piston.
NOTE: If cylinders have ridges, the cylinders are oversize and will need reboring.
Mark the cylinder number onto each connecting rod cap.
Mark the cylinder number onto the top of each piston.