TM-9-2320-272-24-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4

JUNE 1998

TM-9-2320-272-24-1 - Page 134 of 1015

TM 9-2320-272-24-1

Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).

48

Annual

Com-

pressed air

system

PROCEDURE

Check for faulty check valves at the primary and secondary

air tanks and crossed hoses. Crossed hoses occur from A

treadle valve air supply hoses at the primary and secondary

air tanks, and B primary and secondary air gauge lines at

the treadle valve.

• Chock vehicle wheels. Failure to do so may result

in injury or death to personnel.

• Wear safety goggles while performing inspection.

Line is under pressure. Failure to do so may result

in injury to personnel from flying parts or debris.

NOT FULLY

MISSION

CAPABLE IF:

2-46