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 1046 of 1313

FIELD MAINTENANCE

VEHICLE PULLS RIGHT OR LEFT WHEN APPLYING BRAKES

INITIAL SETUP:

Tools and Special Tools

Tool Kit, General Mechanic's: Automotive

(Volume 5, WP

0826, Table 1, Item 56)

Gauge, Pressure

(Volume 5, WP

0826, Table 1, Item 19)

Test Set, Electronic Systems

(Volume 5, WP

0826, Table 1, Item 51)

Personnel Required

(2)

References

Point to Point Schematics

References (cont.)

WP

0053

WP

0120

Volume 3, WP

0424

Volume 3, WP

0426

Volume 3, WP

0432

Volume 3, WP

0434

Volume 3, WP

0479

Volume 3, WP

0481

Equipment Condition

Vehicle parked and engine shut down.

(TM

9-2320-272-10)

TROUBLESHOOTING PROCEDURE

VEHICLE PULLS RIGHT OR LEFT WHEN APPLYING BRAKES

NOTE

•

Conduct these malfunction tests if vehicle pulls right or left when applying brakes. This

procedure will check for front service brakes grabbing, front service brake chambers for

proper air pressure, brakeshoe lining for wear, oil on brakeshoe lining or drum, actuator

seals for rotted, torn or worn conditions and proper clearance between brakeshoe lining

and drum.

•

Vehicle pulling to right or left indicates malfunction in one of the two front wheel service

brakes.

TM 9-2320-272-23-1

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