Inspect Crankshaft

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

0.03 mm (0.0012 in.) If the taper and distortion are greater than the maximum, replace the crankshaft.

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

Standard diameter:

54.988 to 55.000 mm (2.1649 to 2.1654 in.) If the diameter is not as specified, check the crankshaft oil clearance.

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

Maximum taper and distortion:

0.003 mm (0.0001 in.) If the taper and distortion are greater than the maximum, replace the crankshaft. 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

54.988 to 54.990 mm (2.1649 to 2.1650 in.)

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

Standard diameter: 47.990 to 48.000 mm (1.8894 to 1.8898 in.)

If the diameter is not as specified, check the connecting rod oil clearance.

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

Maximum taper and distortion:

0.003 mm (0.0001 in.) If the taper and distortion are greater than the maximum, replace the crankshaft.

26. INSPECT CRANKSHAFT THRUST CLEARANCE

(a) Install the main bearing cap (See page EM-149).

(b) Using a dial indicator, measure the thrust clearance while prying the crankshaft back and forth with a screwdriver.

Standard thrust clearance:

0.04 to 0.24 mm (0.0016 to 0.0095 in.) Maximum thrust clearance: 0.30 mm (0.0118 in.)

If the thrust clearance is greater than the maximum, replace the thrust washers as a set.

HINT:

The thrust washer thickness is 1.93 to 1.98 mm (0.0760 to 0.0780 in.).

27. INSPECT CRANKSHAFT OIL CLEARANCE

(a) Check the crank journal and bearing for pitting and scratches.

(b) Install the crankshaft bearing (See page EM-149).

(c) Place the crankshaft on the cylinder block.

Plastigage

UCT*

UCT*

Number Mark

Number Mark

(d) Lay a strip of Plastigage across each journal.

(e) Examine the front marks and numbers and install the bearing caps on the cylinder block.

HINT:

A number is marked on each main bearing cap to indicate the installation position.

(f) Install the main bearing cap (See page EM-149). NOTICE:

Do not turn the crankshaft.

(g) Remove the main bearing caps (See page EM-127).

(h) Measure the Plastigage at its widest point. Standard oil clearance:

0.017 to 0.040 mm (0.0007 to 0.0016 in.) Maximum oil clearance: 0.060 mm (0.0024 in.) NOTICE:

Remove the Plastigage completely after the measurement.

If the oil clearance is greater than the maximum, replace the crankshaft bearing. If necessary, replace the crankshaft. HINT:

• If replacing a bearing, select a new one with the same number. If the number of the bearing cannot be determined, calculate the correct bearing number by adding together the numbers imprinted on the cylinder block and crankshaft. Then select a new bearing with the calculated number. There are 4 sizes of standard bearings, marked "1", "2", "3" and "4" accordingly.

• EXAMPLE: Cylinder block "3" + Crankshaft "5" = Total number 8 (Use bearing "3")

Standard cylinder block journal bore diameter

Cylinder block + Crankshaft

0 to 2

3 to 5

6 to 8

9 to 11

Bearing to be used

"1"

"2"

"3"

"4"

Mark

Specified Condition

0

59.000 to 59.002 mm (2.3228 to 2.3229 in.)

1

59.003 to 59.004 mm (2.3230 to 2.3230 in.)

2

59.005 to 59.006 mm (2.3230 to 2.3231 in.)

3

59.007 to 59.009 mm (2.3231 to 2.3232 in.)

4

59.010 to 59.011 mm (2.3232 to 2.3233 in.)

5

59.012 to 59.013 mm (2.3233 to 2.3234 in.)

6

59.014 to 59.016 mm (2.3234 to 2.3235 in.)

Standard crankshaft journal diameter

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.)

Mark

Specified Condition

5

54.988 to 54.990 mm (2.1649 to 2.1650 in.)

Standard bearing center wall thickness

Mark

Specified Condition

1

1.993 to 1.996 mm (0.0785 to 0.0786 in.)

2

1.997 to 1.999 mm (0.0786 to 0.0787 in.)

3

2.000 to 2.002 mm (0.0787 to 0.0788 in.)

4

2.003 to 2.005 mm (0.0789 to 0.0789 in.)

28. INSPECT CRANKSHAFT BEARING CAP SET BOLT

(a) Using vernier calipers, measure the tension portion diameter of the bolts. Standard diameter:

7.3 to 7.5 mm (0.287 to 0.295 in.) Minimum diameter: 7.2 mm (0.284 in.) If the diameter is less than the minimum, replace the bolt.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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