TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 1067 of 1313
BRAKES SQUEAL - Continued
STEP
1.
ARE BRAKESHOES IN GLAZED OR WORN OUT CONDITION?
a.
Remove front brakedrums
M939/A1 (Volume 3, WP
0479), M939A2 (Volume 3, WP
0481).
b.
Remove rear brakedrums
M939/A1 (Volume 3, WP
0480), M939A2 (Volume 3, WP
0482).
T0243DAA
Figure 1.
Brakeshoes.
NOTE
Brakeshoe lining should appear dull.
c.
Visually inspect brakeshoes for glazed lining.
d.
If brakeshoe lining is shiny, remove glaze with wire brush.
NOTE
Brake shoe lining should be greater than 5/16 in (7.94 mm).
e.
Inspect chamfer on brakeshoe lining for wear.
CONDITION/INDICATION
ARE BRAKESHOES IN GLAZED OR WORN OUT CONDITION?
DECISION
YES - Replace worn out brakeshoes (Volume 3, WP
0426). Go to Step (3) to verify problem is solved.
NO - Go to Step (2).
TM 9-2320-272-23-1
0124
0124-2
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