Engine Block

Block and Piston Inspection (cont'd)

 7-12

Piston, Pin and Connecting Rod Replacement

  1. Measure the piston outside diameter.

Measuring Point (A):

57 mm (2.2 in.)

Piston outside diameter:

Grade A:

78.930 – 78.939 mm

(3.1075 – 3.1078 in.)

Grade B:

78.940 – 78.949 mm

(3.1079 – 3.1082 in.)

Grade C:

78.950 – 78.959 mm

(3.1083 – 3.1086 in.)

  1. Calculate the cylinder block and the piston clearance

Cylinder block and piston clearance:

Standard:

0.061 – 0.079 mm

(0.0024 – 0.0031 in.)

Disassembly

  1. Remove the snap ring (A) from piston (B).

  1. Push to remove the piston pin (C), then remove the connecting rod (D).
  1. Remove the piston rings (E).
Inspection

  1. Use a micrometer to measure the piston pin outside diameter at several points.

Piston pin outside diameter:

Standard (New):

26.995 – 27.000 mm

(1.0628 – 1.0630 in.)

Service limit:

26.985 mm (1.0624 in.)