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TROUBLESHOOTING GUIDE
Brake Drums
For maintenance procedures, refer the following
sections:
PROBLEM
EXCESSIVE LOSS OF BRAKES OR
FADING
BRAKES PULL TO EITHER SIDE
ROUGH OR NOISY BRAKING ACTION
VIBRATION IN RIDE
5-6
TABLE OF CONTENTS
•
"Alignment" on page 4-11
•
"Brake System Maintenance" on page 4-14
•
"Hub and Drum Maintenance" on page 4-20
•
"Wheel Bearing Lubrication and Adjustment" on
page 4-22
PROBABLE CAUSE
Overheated brake drums
Drums of different diameters
Foreign matter in drums
Defective drums
Defective drums or out-of-round
Out-of-balance drums
SOLUTION
Check for defective or misadjusted
brake linings, distorted or
over-machined drums. Also check for
operating conditions or loads that
create severe or excessive brake
applications.
Replace with drums of same diameter.
Clean drums out.
Pull drums and inspect for any of the
following; Heat spotted drums,
grease spotting, blue drums, scored
drums, excessive wear at rivet holes
or edges, polished drums, out of
round drums, unbalanced drums,
worn/damaged brake components,
foreign matter in drums. Correct
situation or replace defective part(s).
Replace drums.
Balance drums.
F-1044-0719
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