15-22
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CYLINDER BLOCK
CRANK PIN JOURNAL O.D.
Measure the crank pin journal [1] O.D.
CRANKSHAFT JOURNAL (MAIN, PIN)
ROUNDNESS
Measure the crankshaft main journal O.D. and the
crank pin O.D. in the A and B directions.
Calculate the difference between the measurements to
determine the roundness.
If the measurement exceeds the service limit, replace
the crankshaft with a new one.
CRANKSHAFT JOURNAL (MAIN, PIN)
CYLINDRICITY
Measure the crankshaft main journal O.D. and the
crank pin O.D. at the C and D locations.
Calculate the difference between the measurements to
determine the cylindricity.
If the measurement exceeds the service limit, replace
the crankshaft with a new one.
CONNECTING ROD BOLT O.D.
Measure the O.D. of each connecting rod bolt at two
points as shown.
Calculate the difference between the two
measurements.
If the measurement exceeds the service limit, replace
the connecting rod bolt with a new one.
• Measure the O.D. on each connecting rod bolt.
STANDARD:
39.976 – 40.000 mm (1.5739 – 1.5748 in)
STANDARD:
0.005 mm (0.0002 in) max.
SERVICE LIMIT:
0.010 mm (0.0004 in)
STANDARD:
0.005 mm (0.0002 in) max.
SERVICE LIMIT:
0.010 mm (0.0004 in)
A
B
C
D
Measure the roundness at the
center of the journal.
Measure the cylindricity at both ends
of the journal.
CYLINDRICITY:
ROUNDNESS:
STANDARD:
0 – 0.05 mm (0 – 0.002 in)
SERVICE LIMIT:
0.05 mm (0.002 in)
30 mm (1.2 in)
15 mm (0.6 in)
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