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 492 of 991

TM 9-2320-272-24-2

3-428. 100-AMP VOLTAGE REGULATOR REPLACEMENT

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

All

TOOLS

EQUIPMENT CONDITION

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

• Hood raised and secured (TM 9-2320-272-10).

• Right splash shield removed (para. 3-301).

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

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

REFERENCES (TM)

TM 9-2320-272-10

TM 9-2320-272-24P

a. Removal

NOTE

Tag wires, connectors, and cables for installation.

1.

Disconnect harness connectors (6) and (7) from voltage regulator (8).

NOTE

Assistant will help with step 2.

2.

Remove four nuts (5), washers (2), screws (1), washers (2), and voltage regulator (8) from

floorboard (10).

3.

Remove four screws (3), washers (4), and two brackets (9) from voltage regulator (8).

b. Installation

1.

Install two brackets (9) on voltage regulator (8) with four washers (4) and screws (3).

NOTE

Assistant will help with step 2.

2.

3.

4.

5.

6.

Install voltage regulator (8) on floorboard (10) with four washers (2), screws (1), washers (2), and

nuts (5).

Connect harness connectors (6) and (7) to voltage regulator (8).

Connect battery ground cables (para. 3-126).

Start engine (TM 9-2320-272-10).

Check battery generator indicator on instrument panel to ensure it is in green area. If adjustment is

necessary, notify your supervisor.

3-1100