Disassembly - Inspection

Piston Assemblies - Engine Set

Service Repair No - 12.17.03.01

Disassembly
1. Clean cylinder liners and liner recess in cylinder block.
2. Using an expander, remove piston rings.

Inspect





1. Piston ring gap: Position new piston ring 20 mm from top of cylinder bore and measure gap.
2. Check pistons for distortion and cracks.

NOTE: Piston grades A or B are stamped on the crown of the piston.

3. Piston diameter check., Measure piston diameter at right angles to gudgeon pin and 8 mm from bottom of skirt.

NOTE: Piston and connecting rods are only supplied as an assembly.

4. Position piston in cylinder liner and measure clearance 20 mm from bottom of cylinder liner.
5. Clean ring grooves in pistons and blow out oil holes in ring grooves.