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 TM 9-2330-326-14&P
H-28. TROUBLESHOOTING BRAKE DRUMS (Cont.)
EXAMPLE
PROBLEM
CAUSE
SOLUTION
Out-of-round:
Heat distortion
Re-bore brake drum within
variation in
normal limits or replace.
diameter
See maintenance
instructions regarding
Photo Not
turning of brake surface.
Required For
Explanation
Clean all mounting
Out-of-round:
Improper fit to pilot or
surfaces. Check for
concentricity
improper seating on
correct fit and clearance to
wheel or hub
wheel.
Check maximum
Excessive wear
Abrasive material
diameter and re-bore
between lining and drum
within limit or replace.
or poor quality lining
See maintenance
instructions regarding
turning of brake surface.
Grease-stained
Leaking oil seal or
Repair source of oil or
drums
improper lubrication of
grease leak. Clean the
brake components
brake drums and replace
the linings.
Polished brake
Normal condition for non-
Remove glaze with emery
surface
asbestos lining
cloth or re-bore drum
within normal limits. See
Improperly cured brake
maintenance instructions
linings
regarding turning of brake
surface.
H-77
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