5-6 F-1005-1018
TROUBLESHOOTING GUIDE
TABLE OF CONTENTS
Brake Drums
For maintenance procedures, refer the following
sections:
• “Suspension Maintenance” on page 4-11
• “Alignment” on page 4-13
• “Brake System Maintenance” on page 4-16
• “Adjustment” on page 4-25
PROBLEM PROBABLE CAUSE SOLUTION
EXCESSIVE LOSS OF BRAKES OR
FADING
Overheated brake drums 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.
BRAKES PULL TO EITHER SIDE Drums of different diameters Replace with drums of same diameter.
Foreign matter in drums Clean drums out.
ROUGH OR NOISY BRAKING ACTION Defective drums 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).
VIBRATION IN RIDE Defective drums or out-of-round Replace drums.
Out-of-balance drums Balance drums.
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