Cleaning And Inspection

Wash all parts in grease solvent and blow out oil holes in pinion shaft, right flywheel and crank pin with compressed air. Examine crank pin for wear, grooving and pitting. If the surface is at all worn, replace with new pin. Examine flywheel washers (23 and 24, Fig. 3E-22). If either washer is worn and grooved, it should be replaced.

Examine connecting rod lower races. If they appear slightly grooved or shouldered where edge of bearing rollers ride, they may be lapped out and oversize bearing rollers installed. If they appear badly worn, grooved or pitted, new rods should be installed, preferably as an assembly with new bearings and crankpin.

Examine pinion shaft and right crankcase bushing (see 14, Fig. 3E-20) for pitting, grooving, and gouging. A shaft that is worn must be replaced. If bushing is worn beyond repair, replace as described in "Repairing Crankcase."

Examine sprocket shaft bearing outer races for wear, grooving, pitting and powdered metal fragments. Examine bearing rollers for wear, pitting, grooving and scoring. The sprocket shaft Timken tapered roller bearings are manufactured in selectively fitted sets. Each set has a serial number which appears on all parts. If any part is unusable, the entire set must be replaced. See "Checking Flywheel End Play."

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