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 632 of 1015

3-94. TACHOMETER

TM 9-2320-272-24-1

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

M939/A1

TM 9-2320-272-10

TOOLS

TM 9-2320-272-24P

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

EQUIPMENT CONDITION

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

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

1.

Disconnect tachometer pulse sender connector (1) from pulse sender receptacle (6).

2.

Remove tachometer cable (2) from tachometer pulse sender (3).

3.

Remove tachometer pulse sender (3) from adapter fitting (5).

4.

Remove drive tip (4) from adapter fitting (5).

1.

Install drive tip (4) on adapter fitting (5).

2.

Install tachometer pulse sender (3) on adapter fitting (5).

3.

Install tachometer cable (2) on tachometer pulse sender (3).

4.

Connect tachometer pulse sender connector (1) to pulse sender receptacle (6).

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