Connecting rod inspection – Cub Cadet MTD P71 Series User Manual

Page 100

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P71 Series Vertical Shaft Engines

94

8.

Inspect the piston pin for galling, scoring, pitting or
any other form of damage.

9.

Measure the piston pin using a vernier caliper or a
micrometer. See Figure 10.17.

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 102 -
111 in-lbs (11.5-12.5 Nm)

3.

Measure the inside diameter of both ends of the
connecting rod and compare the measurements to
those listed in the chart at the end of this chapter.
See Figure 10.18.

NOTE: Take two measurements 90 degrees apart.

This will check the out of roundness of the
connecting rod.

4.

Take the crankshaft 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.

5.

Insert the small end of the connecting rod into the
piston so that the con rod cap bolt heads are point-
ing in the opposite direction of the arrow on the pis-
ton crown. See Figure 10.19.

6.

Insert the piston pin.

7.

Insert the piston pin clip.

Figure 10.17

Figure 10.18

Measure at right angles

Figure 10.19

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