TROUBLESHOOTING BRAKE DRUMS (Cont.) - TM-9-2330-326-14-P0330

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TROUBLESHOOTING BRAKE DRUMS (Cont.)

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TM-9-2330-326-14-P Semitrailer Tactical Drop Deck BreakBulk/Container Transporter 22-1/2 TON M871A3NSN 2330-01-458-6865 Manual

TROUBLESHOOTING BRAKE DRUMS (Cont.)

TM 9-2330-326-14&P

H-28. TROUBLESHOOTING BRAKE DRUMS (Cont.)

EXAMPLE

PROBLEM

CAUSE

SOLUTION

Blue or

Excessive heat from

Re-bore brake drum

discolored brake

dragging brakes or brake

within normal limits or

surface

imbalance between tractor

replace. Look for weak or

and trailer

broken return springs or

binding brake actuation

system. See

maintenance instructions

regarding turning of brake

surface.

Heat spotted or

High localized heating and

Grind hard spot and re-

hard spots in

cooling cycles

bore brake drum within

brake surface

normal limits. See

maintenance instructions

regarding turning of brake

surface.

Photo Not

Out-of-round:

Balance weight has fallen

Re-bore brake drum.

RequiredFor

balance

off or a balanced drum

Specify balanced brake

Explanation

was not specified

drums when ordering

replacement.

H-76