Engine Block

Block and Piston Inspection

 7-14  

  1. Check the piston for distortion or cracks.
  2. Measure the piston diameter at a point 13 mm (0.5 in.) from the bottom of the skirt.

Piston Diameter:

Standard (New): 74.98 - 74.99 mm

(2.9520 - 2.9524 in.)
Service Limit: 74.97 mm

(2.9516 in.)

  1. SKIRT DIAMETER

Oversize Piston Diameter:

0.25: 75.23 - 75.24 mm (2.9618 - 2.9622 in.)

0.50: 75.48 - 75.49 mm (2.9716 - 2.9720 in.)
  1. Measure wear and taper in direction X and Y at 3 levels in each cylinder as shown. If measurements in any cylinder are beyond the Oversize Bore Service Limit, replace the block. If the block is to be rebored, refer to step 6 after reboring.

Cylinder Bore Size:

Standard (New): 75.00 - 75.02 mm

(2.9528 - 2.9535 in.)
Service Limit: 75.07 mm (2.9555 in.)

Oversize:

0.25: 75.25 - 75.27 mm (2.9626 - 2.9634 in.)

0.50: 75.50 - 75.52 mm (2.9724 - 2.9732 in.)

Reboring limit: 0.5 mm (0.02 in.) max.

Bore Taper:

Limit: (Difference between first and third measurement) 0.05 mm (0.002 in.)

  1. First Measurement
  2. Second Measurement
  3. Third Measurement