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 618 of 1015

3-88. SPEEDOMETER

TM 9-2320-272-24-1

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

All

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).

Two lockwashers (Appendix D, Item 352)

Battery ground cables disconnected (para. 3-126).

NOTE

Speedometer and tachometer are replaced the same. This

procedure covers speedometer.

1.

Remove eight screws (7) from instrument cluster (8).

2.

Pull instrument cluster (8) away from instrument panel (9).

3.

Loosen nut (2) and disconnect speedometer driveshaft (1) from speedometer (6).

4.

Remove two nuts (3), cable assembly (11), extension stud (10), washer (12), and two lockwashers (4)

from speedometer mounting bracket (5). Discard lockwashers (4).

5.

Remove mounting bracket (5) and speedometer (6) from instrument cluster (8).

1.

Install speedometer (6) and mounting bracket (5) on instrument cluster (8) with two new

lockwashers (4), extension stud (10), and nut (3).

2.

Install cable assembly (11) on extension stud (10) with washer (12) and nut (3).

3.

Install speedometer driveshaft (1) on speedometer (6) and tighten nut. (2).

4.

Install instrument cluster (8) on instrument panel (9) with eight screws (7).

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