Special Tools

Make the necessary adjustments, repairs and part replacements if excessive wear or damage is discovered during inspection.

Crankshaft

Inspect the surface of the crankshaft journals and crankpins for excessive wear and damage. Inspect the oil ports for obstructions.

Bearing Spread

Check the bearing spread. Finger pressure should be sufficient to fit the bearing into position. If the bearing fits loosely, it must be replaced.

Crankshaft Run-Out

1. Set a dial indicator to the center of the No. 4 crankshaft journal.
2. Gently turn the crankshaft in the normal direction of engine rotation.

Read the dial indicator as you turn the crankshaft.

If the measured value exceeds the specified limit, the crankshaft must be replaced.

Standard: 0.06 mm (0.0024 in) or less

Limit: 0.45 mm (0.018 in)

Crankshaft Journal and Crankpin Diameter

1. Use a micrometer to measure the crankshaft journal diameter across points (1)-(1) and (2)-(2).
2. Use the micrometer to measure the crankshaft journal diameter at the two points ((3) and (4)).
3. Repeat steps 1 and 2 to measure the crankshaft pin diameter.

Crankshaft journal diameter

Standard:

No. 4 journal: 81.875-81.895 mm (3.2234-3.2242 in)

Others: 81.905-81.925 mm (3.2246-3.2254 in)

Crankshaft pin diameter

Standard: 65.902-65.922 mm (2.5946-2.5953 in)

Crankshaft journal and crankpin uneven wear

Limit: 0.05 mm (0.0020 in)

Crankshaft Bearing Inside Diameter

1. Clean the cylinder body and lower crankcase bearing fitting surfaces. Clean the bearing inside and outside surfaces.
2. Install the lower crankcase with the bearings to the cylinder body.
3. Apply molybdenum disulfide grease to the lower crankcase bolt threads and setting faces.

Notice: Refer to Fastener Notice in the Preface section.

Important: Cylinder body lower crankcase M14 bolts can be reused 6 times before replacement.

4. Tighten the lower crankcase M14 bolts in three steps using the angular tightening method.

Tighten
Tighten the lower crankcase M14 bolts in the following three steps.

4.1.	First step: 98 N·m (10 kgm/72 lb ft).

4.2.	Second step: 132 N·m (13.5 kgm/98 lb ft).

4.3.	Third step: Then tighten 30-60 degrees.




5. Tighten the lower crankcase M10 bolts to the specified torque.

Tighten
Tighten the lower crankcase M10 bolts to 37 N·m (3.8 kgm/27 lb ft).

6. Use an inside dial indicator to measure the crankshaft bearing inside diameter.

Crankshaft Journal and Bearing Clearance

If the clearance between the measured bearing inside diameter and the crankshaft journal diameter exceeds the specified limit, the crankshaft must be replaced.

Specification

Crankshaft Bearing Selection

If the crankshaft journal and bearing clearance measurement values deviate from the standard, use the table below to select a suitable crankshaft bearing that is within the standard value.

1. Install the J 22888-D on the crankshaft timing gear.
2. Install the crankshaft timing gear to the crankshaft.




Important: When installing the crankshaft timing gear, make sure that the timing mark is facing away from the cylinder block.

3. Using the J 41222 , install the crankshaft timing gear onto the crankshaft.