TM-9-2320-272-24-3

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4

JUNE 1998

TM-9-2320-272-24-3 - Page 674 of 799

4-201. CRANE

TM 9-2320-272-24-3

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

M936/A1/A2

LO 9-2320-272-12

TM 9-2320-272-10

TOOLS

TM 9-2320-272-24P

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

Torque wrench (Appendix E, Item 144)

EQUIPMENT CONDITION

MATERIALS/PARTS

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

Hydraulic oil reservoir drained (LO 9-2320-272-12).

Four locknuts (Appendix D, Item 285)

Cap and plugs (Appendix C, Item 14)

1.

Remove five screws (1) and control valve cover (2) from gondola (3).

CAUTION

When disconnecting hydraulic lines, plug all openings to prevent

dirt from entering and causing internal damage to parts.

NOTE

Have drainage container ready to catch oil.

Tag hydraulic lines for installation.

2.

Disconnect hydraulic oil reservoir crossover tube (10) from control valve elbow (11).

3.

Remove control valve elbow (11) from control valve adapter (4).

4.

Disconnect two hydraulic swinger motor flex lines (17) from control valve adapter fittings (16).

5.

Disconnect two hydraulic crowd cylinder flex lines (18) from control valve adapter fittings (15).

4-938