TM-9-2320-272-24-2

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4

JUNE 1998

TM-9-2320-272-24-2 - Page 668 of 991

TM 9-2320-272-24-2

3-465. AIR DRYER FILTER REPLACEMENT

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

M939A2

TM 9-2320-272-10

TOOLS

TM 9-2320-272-24P

General mechanic’s tool kit (Appendix E, Item 1)

EQUIPMENT CONDITION

MATERIALS/PARTS

Parking brake set (TM 9-2320-272-10).

Air reservoirs drained (TM 9-2320-272-10).

Filter element kit (Appendix D, Item 124)

GENERAL SAFETY INSTRUCTIONS

Eyeshields must be worn when releasing

compressed air.

a. Removal

WARNING

Air system components are subject to high pressure. Always

relieve pressure before loosening or removing air system

components. Failure to do so may result in injury to personnel.

1.

Remove four screws (3), brake valve (2), and filter element (5) from air dryer shell (1). Discard filter

element (5).

2.

Remove O-ring (4) from brake valve (2). Discard O-ring (4).

b. Installation

1.

Install new O-ring (4) on brake valve (2).

2.

Install new filter element (5) on air dryer shell (1), and position brake valve (2) under filter element (5).

3.

Install brake valve (2) on air dryer shell (1) with four screws (3).

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