## Engine Block

#### Piston Ring Replacement (cont'd)

7-23

1. Install the top ring and second ring as shown. The top ring (A) has a R1 mark and the second ring (B) has a R2 mark. The manufacturing marks (C) must be facing upward.

1. Rotate the rings in their grooves to make sure they do not bind.

1. Position the ring end gaps as shown:

1. After installing a new set of rings, measure the ring-to-groove clearances:

   Top Ring Clearance

Standard (New):

0.040 - 0.065 mm

(0.0016 - 0.0026 in.)

Service Limit:

0.13 mm (0.005 in.)

Second Ring Clearance

Standard (New):

0.045 - 0.070 mm

(0.0018 - 0.0028 in.)

Service Limit:

0.13 mm (0.005 in.)

a a a