TM 9-2330-390-14&P
4-75. HUB, BRAKEDRUM, AND WHEEL BEARINGS MAINTENANCE (Con't).
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6.
Inspect brakeshoes (18) for cracks, looseness of
linings or rivets, and wear. If linings are worn flat
on wear notch (19) in middle of lining, a thickness
equal to or less than 5/8 in. (7.94 mm), replace
brakeshoes (see paragraph 4-57).
Inspect brakedrum for cracks, scoring, pitting, or
grooves. Check edge of brakedrum for cracks or
broken areas. Replace damaged brakedrum.
Inspect hub for cracks, breaks, or damage.
Replace damaged hub.
Inspect spindle for burrs. Remove burrs with
crocus cloth, clean with dry cleaning solvent, and
dry with a clean rag.
1.
Install inner and outer bearing cups (14 and 16) squarely onto hub (15) until flush against shoulder.
l Use extreme caution when handling heavy parts. Lifting device is required when
parts weigh over 50 lb (23 kg) for a single person lift, over 100 lb (45 kg) for a two
person lift, and over 150 lb (68 kg) for a three or more person lift. Keep clear of heavy
parts supported only by lifting device. Failure to follow this warning may cause
serious injury or death to personnel.
l Studs are marked LEFT-HAND and RIGHT-HAND. Left-hand studs must be installed
on brakedrums on left side of dolly. Right-hand studs must be installed on
brakedrums on right side of dolly. Failure to follow this warning may cause wheel
nuts to loosen when doily set is towed, resulting in injury to personnel.
2.
Assemble hub (15) and brakedrum (10) with ten studs (9).
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