2-100. AXLE ASSEMBLY (HUB AND DRUM) MAINTENANCE (MODEL WPES-1) - continued.
Drycleaning solvent P-D-680 is highly toxic and can ignite organic materials, nitrates, carbides, and
chlorates Wear eye, skin, and respiratory protection. Use in a well-ventilated area.
a. Using drycleaning solvent, clean bearings (3 and 5) and bearing cups (14 and 15) by wiping and scrubbing
b. If old grease in bearing cone and rollers is gummed or caked, soak bearing in drycleaning solvent, then repeat
Do not dry bearing cone and rollers with compressed air. Spinning bearings may come apart and
cause serious injury to personnel
After cleaning, keep bearings clean and dry Dirt and moisture can damage bearings.
c. Rinse bearings (3 and 5) and bearing cups (14 and 15) in clean drycleaning solvent and allow to air dry.
a. Hold bearing cone (16) and slowly turn inner race (18).
Bearings and bearing cups are a matched set. If either part of set is defective, replace both parts.
b. Check that rollers (17) and bearing cone (16) have no cracks, flaking, pitting, or long or deep scratches.
c. Check that bearing cone (16) has not overheated. Bearing cone turns blue where overheated.
d. Check that bearing cups (14 and 15) are not splintered or chipped.
Pack bearings (3 and 5) with grease (refer to LO .10-4610-240-12,).