Crankshaft, Engine

CRANKSHAFT END PLAY





^ Using a dial gauge, measure the clearance between the thrust bearings and the crankshaft arm when the crankshaft is moved fully forward or backward.
Standard: 0.10 - 0.25 mm (0.0039 - 0.0098 inch)
Limit: 0.30 mm (0.0118 inch)
^ If the measured value exceeds the repair limit, replace the thrust bearings, and measure again. If it still exceeds the repair limit, replace the crankshaft also.

OUTER DIAMETER OF CRANKSHAFT JOURNAL
Measure outer diameter of crankshaft journals.
Standard: 63.940 - 63.964 mm (2.5173 - 2.5183 inch)

OUTER DIAMETER OF CRANKSHAFT PIN





Measure outer diameter of crankshaft pin.
Standard: 51.956 - 51.974 mm (2.0455 - 2.0462 inch)

OUT-OF-ROUND AND TAPER OF CRANKSHAFT





^ Using a micrometer, measure the dimensions at 4 different points shown in the figure on each journal and pin.
^ Out-of-roundness is indicated by the difference in dimension between X and Y at A and B.
^ Taper is indicated by the difference in dimension between A and B at X and Y
Limit:
Out-of-round (X-Y): 0.015 mm (0.0006 inch)
Taper (A-B): 0.010 mm (0.0004 inch)

CRANKSHAFT RUNOUT





^ Place a V-block on a precise flat table to support the journals on the both end of the crankshaft.
^ Place a dial gauge straight up on the No. 3 journal.
^ While rotating the crankshaft, read the movement of the pointer on the dial gauge.
^ Half of the movement shows the runout.
Limit: 0.05 mm (0.002 inch)

Part 1:

Part 2:

CRANKSHAFT