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 TM 9-2330-326-14&P
TROUBLESHOOTING HUBS
Hubs Using Piloted Disc Wheels
Example
Problem
Cause
Solution
Broken studs
1. Loose capnuts
Replace the broken stud and the
2. Overloading
stud on each side of the broken
stud. If more than two studs are
broken, replace the entire set.
Stripped
Excessive torque
Replace stud and/or capnut and
threads on
re-torque to specifications.
studs or
capnuts
Damaged
1. Loose wheel
Replace capnuts. Check for
inner or outer
2. Overloading
proper stud standout and re-
capnuts
torque to specifications.
Damaged
Sliding wheel on
Replace studs or capnuts per
threads on
threads
installation instructions.
stud or cap
nut
Worn
1. Loose capnuts
Replace hub following assembly
mounting face
2. Overloading
procedures. When reassembling
on hub
inboard-mounted brake drum to
hub, tighten back nuts to
specifications.
Uneven tire
1.
Improper tire
Align per wheel service instructions.
wear
alignment
2. Loose bearing
Check bearing for wear and replace
adjustment
or readjust as required.
3.
Loose or worn
Check with suspension
suspension
manufacturer.
bushings
4. Low tire pressure
Inflate to recommended pressure.
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