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Engine Block
Crankshaft Inspection
Out-ol-Round and Taper
1. Remove the crankshaft from the cylinder block (see
page 7-121.
2. Clean the crankshaft oil passages with pipe
cleaners or a suitable brush.
3. Clean the keyway and threads.
4. Measure out-of round at the middle of each rod and
main journal in two places. The difference between
measurements on each journal must not be more
than the service limit.
Journal Out-ol-Round
Standard (New):
0.005
mm
(0.0002
in.) max.
Service Limit:
0.010
mm
(0.0004
in.)
EB
5. Measure taper at the edges of each rod and main
journal. The difference between measurements on
each journal must not be more than the service
limit.
Journal Taper
Standard (New):
0.005
mm
(0.0002
in.) max.
Service Limit:
0.010
mm
(0.0004
in.)
7-14
Straightness
6. Place the cylinder block on the surface plate.
7. Clean and install the bearigns on the No.1 and No.5
journal of the cylinder block.
8. Lower the crankshaft into the block.
9. Measure runout on all main journals. Rotate the
crankshaft two complete revolutions. The
difference between measurements on each journal
must not be more than the service limit.
Crankshaft Total Runout
Standard (New):
0.03
mm
(0.0012
in.1 max.
Service Limit:
0.04
mm
(0.0016
in.1
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Troubleshooting
