3.12
MAINTENANCE
NOTE: The Rod Pin position in relation to the dial
indicator tells you what action is required to
straighten the shaft.
CRANKSHAFT RUNOUT INSPECTION
Crankshaft runout can be checked with the engine in the
machine. Using a dial indicator with the crankshaft holding
fixture (PN 2870569) will yield the most accurate results.
Table 3-3: Truing Examples
To correct a situation like this. Strike the shaft at point
A with a brass hammer.
To correct a situation like the one shown in this.
Squeeze the crankshaft at point A. You will use the
tool from the alignment kit PN 2870569.
If the crank rod pin location is 180_ from the dial
indicator (opposite of above), it will be necessary to
spread the crankshaft at the A position as shown in
illustration 3. When rebuilding and straightening a
crankshaft, straightness is of utmost importance.
Runout must be as close to zero as possible.
A
B
HIGH .004 (.1mm)
HIGH .004 (.1mm)
SUPPORT CRANKSHAFT
AT THESE TWO BEARINGS
AA
HIGH .002 (.05mm)
HIGH .005 (.13mm)
A
HIGH .002 (.05mm)
HIGH .005(.13mm)
A
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