Crankshaft

CRANKSHAFT





1. Measure the crankshaft end play.

End play: 0.080-0.282 mm (0.0032-0.0111 in)
Maximum: 0.3 mm (0.01 in)

2. If the end play exceeds the maximum, replace the thrust bearing or grind the crankshaft and install an oversize thrust bearing.

Journal width








3. Set the crankshaft No.1 and No.5 main journals on V-blocks.
4. Measure the crankshaft runout at the No.3 main journals. Replace the crankshaft if necessary.

Runout: 0.04 mm (0.0016 in) max.





5. Measure journal diameter in X and Y directions at two points (A and B) as shown.

Main journal
Diameter: 49.938-49.956 mm (1.9661-1.9667 in)
Minimum: 49.904 mm (1.9647 in)
Out-of-round: 0.05 mm (0.0020 in) max.

Crank pin journal
Diameter: 44.940-44.956 mm (1.7693-1.7699 in)
Minimum: 44.908 mm (1.7680 in)
Out-of-round: 0.05 mm (0.0020 in) max.





6. If the diameter exceeds the maximum, grind the journal and install the undersize bearing.
7. Measure the main journal oil clearances as follows.
1) Position plastigauge atop the crankshaft in the axial direction.
2) Install the main bearing cap and tighten the main bearing cap bolts.
3) Remove the main bearing cap bolts and main bearing caps.
4) Measure the plastigauge at each journal.

Oil clearance:
0.018-0.036 mm (0.0008-0.0014 in)
Maximum: 0.1 mm (0.004 in)

5) If the oil clearance exceeds the maximum, replace the connecting rod bearing or grind the main journal and use undersize bearings.