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Page Title:
INSPECTION/REPLACEMENT CONTINUED |
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 TM9-2320-270-20-2
TANDEM AXLE HUB, DRUM, AND BEARING ASSEMBLY - CONTINUED
ACTION
REMARKS
ITEM
LOCATION
INSPECTION/REPLACEMENT CONTINUED
Inspect for cracks across hub face
a.
Hub (1)
20.
radiating from bolt holes, or near
bearing cups (2) and (3).
Check for signs of damage or wear on
b.
hub face.
c.
Inspect for stripped, bent, or broken
hub cap studs (4).
Replace any damaged hub cup stud.
Inspect for stripped, bent, or broken
d.
wheel studs (5).
Replace any damaged studs, steps
24 to 26 and 30.
Inspect for scored or pitted wheel
e.
bearing cups (2) and (3) and
discoloration.
Replace damaged wheel bearing cup,
step 21. If hub, hub cap studs, wheel
studs, and bearing cups are not
damaged, continue with step 29.
WARNING
Some parts are heavy. Be careful when handling them. Lifting equipment is needed
when parts weigh over 50 pounds (23 kg) for a single person lift, over 100 pounds
(45 kg) for a two person lift, and over 150 pounds (68 kg) for a three or more person
lift. Do not try to handle heavy parts without lifting equipment. Keep clear of heavy parts
supported only by lifting equipment. Failure to observe this precaution could cause
serious injury or death of personnel.
NOTE
Except as noted, steps are the same for replacing either inner or outer bearing cups.
Inner bearing cup is shown.
a.
Note three reliefs.
Inner bearing
21. Hub (1)
b.
Using puller, pull out.
cup (2)
c.
Position new cup (2) square and level.
d.
Using ball-peen hammer and wood-
block, tap in place.
Turn woodblock one-third turn after
every one or two hammer taps to
prevent cocking.
e. On inner bearing cup (2), using brass
drift and ball-peen hammer, tapping on
alternate sides of the cup to prevent
cocking, finish seating.
4-930
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