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 981 of 1313
PARKING BRAKE DOES NOT HOLD VEHICLE ON GRADE - Continued
STEP
3.
ARE PARKING BRAKE SHOES IN GOOD CONDITION?
a.
Check for worn parking brakeshoes.
T0182DAA
Figure 3.
Parking Brake Assembly.
b.
Push parking brake lever clockwise by hand and measure brake lever travel.
c.
If parking brake lever travels less than 2 in., parking brakeshoes are OK.
CONDITION/INDICATION
ARE PARKING BRAKE SHOES IN GOOD CONDITION?
DECISION
NO - Replace parking brakeshoes (Volume 3, WP
0422). Go to Step (5) to verify problem is solved.
YES - Go to Step (4).
STEP
4.
IS PARKING BRAKE ACTUATING MECHANISM WORKING PROPERLY?
Visually check for broken or faulty actuating plate, lever, and spring.
TM 9-2320-272-23-1
0118
0118-4
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