Engine Unit Inspection

Using a precision straightedge and feeler gauge, measure the warpage of the surface that is in contact with the cylinder head gasket.

Maximum warpage:

0.05 mm (0.0020 in.)

Using a cylinder gauge, measure the cylinder bore diameter at positions A and B in the thrust and axial directions.

Standard diameter:

88.500 to 88.513 mm (3.4843 to 3.4847 in.)

Maximum diameter:

88.633 mm (3.4894 in.)

Using a gasket scraper, remove the carbon from the piston top.

Using a groove cleaning tool or a broken ring, clean the piston ring grooves.

Using a brush and solvent, thoroughly clean the piston.

ПРИМЕЧАНИЕ:

Do not use a wire brush.

Using a micrometer, measure the piston diameter at right angles to the piston pin hole, and at the piston 44.3 mm (1.7587 in.) from the piston head.

Standard piston diameter:

88.477 to 88.487 mm (3.5125 to 3.5129 in.)

Subtract the piston diameter measurement from the cylinder bore diameter measurement.

Standard oil clearance:

0.021 to 0.044 mm (0.0008 to 0.0017 in.)

Maximum oil clearance:

0.10 mm (0.0039 in.)

Using a feeler gauge, measure the clearance between the new piston ring and wall of the ring groove.

Standard ring groove clearance:

Item	Specified Condition
No. 1 ring	0.020 to 0.070 mm (0.0008 to 0.0028 in.)
No. 2 ring	0.020 to 0.060 mm (0.0008 to 0.0024 in.)
Oil ring	0.020 to 0.070 mm (0.0008 to 0.0028 in.)

Using a piston, push the piston ring a little beyond the bottom of the ring travel, 110 mm (4.33 in.) from the top of the cylinder block.

Using a feeler gauge, measure the end gap.

Standard end gap:

Item	Specified Condition
No. 1 ring	0.24 to 0.31 mm (0.0094 to 0.0122 in.)
No. 2 ring	0.33 to 0.43 mm (0.0130 to 0.0169 in.)
Oil ring	0.10 to 0.30 mm (0.0040 to 0.0119 in.)

Maximum end gap:

Item	Specified Condition
No. 1 ring	0.89 mm (0.0350 in.)
No. 2 ring	1.37 mm (0.0539 in.)
Oil ring	0.73 mm (0.0287 in.)

Using a caliper gauge, measure the piston pin bore diameter.

Standard piston pin bore diameter:

22.001 to 22.010 mm (0.8662 to 0.8665 in.)

Using a micrometer, measure the piston pin diameter.

Standard piston pin diameter:

21.997 to 22.006 mm (0.8660 to 0.8664 in.)

Using a caliper gauge, measure the connecting rod small end bore diameter.

Standard connecting rod small end bore diameter:

22.005 to 22.014 mm (0.8663 to 0.8667 in.)

Subtract the piston pin diameter measurement from the piston pin bore diameter measurement.

Standard oil clearance:

0.001 to 0.007 mm (0.00004 to 0.0003 in.)

Maximum oil clearance:

0.013 mm (0.0005 in.)

Subtract the piston pin diameter measurement from the connecting rod small end bore diameter measurement.

Standard oil clearance:

0.005 to 0.011 mm (0.0002 to 0.0004 in.)

Maximum oil clearance:

0.017 mm (0.0007 in.)

Using a connecting rod aligner and feeler gauge, check the connecting rod alignment.

1. Check for misalignment.
   

   Maximum misalignment:

   0.05 mm (0.0020 in.) per 100 mm (3.94 in.)
   

   If the misalignment is greater than the maximum, replace the connecting rod.
   




2. Check for twist.
   

   Maximum twist:

   0.15 mm (0.0059 in.) per 100 mm (3.94 in.)
   

   If the twist is greater than the maximum, replace the connecting rod.
   

Using vernier calipers, measure the tension portion diameter of the bolt.

Standard diameter:

7.2 to 7.3 mm (0.283 to 0.287 in.)

Minimum diameter:

7.0 mm (0.276 in.)

Using a dial indicator and V-blocks, measure the circle runout as shown in the illustration.

Maximum taper and distortion:

0.003 mm (0.0001 in.)

Using a micrometer, measure the diameter of each main journal.

Standard diameter:

54.988 to 55.000 mm (2.1830 to 2.1654 in.)

Check each main journal for taper and distortion as shown in the illustration.

Maximum taper and distortion:

0.003 mm (0.0001 in.)

Standard diameter (Reference):

Mark	Specified Condition
0	54.999 to 55.000 mm (2.1653 to 2.1654 in.)
1	54.997 to 54.998 mm (2.1652 to 2.1653 in.)
2	54.995 to 54.996 mm (2.1652 to 2.1652 in.)
3	54.993 to 54.994 mm (2.1651 to 2.1651 in.)
4	54.991 to 54.992 mm (2.1650 to 2.1650 in.)
5	54.998 to 54.990 mm (2.1649 to 2.1650 in.)

Using a micrometer, measure the diameter of each crank pin.

Standard diameter:

47.990 to 48.000 mm (1.8894 to 1.8898 in.)

Inspect each crank pin for taper and distortion as shown in the illustration.

Maximum taper and distortion:

0.003 mm (0.0001 in.)

Using vernier calipers, measure the tension portion diameter of the bolts.

Standard diameter:

7.5 to 7.6 mm (0.295 to 0.299 in.)

Minimum diameter:

7.5 mm (0.295 in.)