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B
J1
J2
For example, if the crankcase J
er shaft web J
numbers are 6 and 5 respec-
1
tively, then the bearing size for J
J
(crankcase) – J
(balancer shaft web)
1
1
= 6 – 5
= 1 (blue)
Bearing color code
1. Blue 2. Black 3. Brown 4.
Green 5. Yellow
EAS31075
CHECKING THE CRANKSHAFT
1. Measure:
• Crankshaft runout
Out of specification → Replace the crank-
shaft.
Runout limit
0.030 mm (0.0012 in)
2. Check:
• Crankshaft journal surfaces
• Crankshaft pin surfaces
• Bearing surfaces
Scratches/wear → Replace the crankshaft.
3. Measure:
• Crankshaft-journal-to-crankshaft-journal-
bearing clearance
Out of specification → Replace the crank-
shaft journal bearings.
CRANKSHAFT AND BALANCER SHAFT
ECA13920
NOTICE
Do not interchange the crankshaft journal
bearings. To obtain the correct crankshaft-
journal-to-crankshaft-journal-bearing clear-
ance and prevent engine damage, the crank-
and balanc-
shaft journal bearings must be installed in
1
their original positions.
is:
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1
a. Clean the crankshaft journal bearings, crank-
b. Install the crankshaft journal lower bearings
TIP
Align the projections "a" on the crankshaft jour-
nal lower bearings with the notches "b" in the
lower crankcase.
c. Put a piece of Plastigauge® "2" on each
TIP
Do not put the Plastigauge® over the oil hole in
the crankshaft journal.
d. Install the crankshaft journal upper bearings
5-80
Journal oil clearance
0.021–0.045 mm (0.0008–0.0018
in)
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shaft journals, and bearing portions of the
crankcase.
"1" and the crankshaft into the lower crank-
case.
a
b
crankshaft journal.
"3" into the upper crankcase and assemble
the crankcase halves.
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1
2
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Troubleshooting
