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 626 of 1313

FIELD MAINTENANCE
DRAG BRAKE DOES NOT OPERATE
INITIAL SETUP:
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
(Volume 5, WP
0826, Table 1, Item 56)
Personnel Required
(2)
References
Point to Point Schematics
References (cont.)
Volume 4, WP
0668
Volume 4, WP
0672
Volume 4, WP
0673
Equipment Condition
Vehicle parked and engine shut down.
(TM
9-2320-272-10)
TROUBLESHOOTING PROCEDURE
DRAG BRAKE DOES NOT OPERATE
NOTE
Conduct these malfunction tests if winch drag brake does not operate. This procedure
will check for drag brake adjustment.
M939 series vehicles utilize two types of winches depending on configuration, one type
of winch uses level wind drag brake whereas the other does not. Ensure to determine
the type prior to troubleshooting.
TM 9-2320-272-23-1
0061
0061-1


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