Checking the piston rings

1. Measure:

Piston ring side clearance Out of specification Replace the
piston and piston rings as a set.

NOTE:

Before measuring the piston ring side clearance, eliminate any carbon deposits from the piston ring grooves and piston rings.

2. Install:

• Piston ring (into the cylinder)

NOTE:

Level the piston ring into the cylinder with the piston crown.

a. 40 mm (1.57 in)

3. Measure:

• Piston ring end gap Out of specification Replace
  the piston ring.

NOTE:

The oil ring expander spacer end gap cannot be measured. If the oil ring rail gap is excessive, replace all three piston rings.