61/65/70/75 Series Horizontal Shaft Engines
108
Connecting rod inspection
1. Inspect the connecting rod for cracks or any signs of
damage.
2. Install the rod cap and tighten to a torque of 106 -
124 in lbs (12 - 14Nm).
3. Measure the inside diameter of the connecting rod
and compare the measurements to those listed in
the chart at the end of this chapter. See Figure
10.12.
NOTE: Take two measurements 90 degrees apart.
This will check the out of roundness of the
connecting rod.
NOTE: Connecting rods are not available as service
parts. If the connecting rod is bad, the
engine must be short blocked.
4. Take the crank shaft journal measurement and sub-
tract it from the connecting rod measurement to get
the connecting rod to journal running clearance.
Compare that number to the one listed in the chart
at the end of this chapter.
NOTE: Plasti-gauge can be used to measure the
connecting rod to journal running clearance,
but it is very technique sensitive and it is not
as reliable as the method described above.
See Figure 10.13.
Figure 10.12
Measure at
right angles
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