TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 461 of 1275

TM 9-2350-311-20-1

(2) EXTERNAL POWER RECEPTACLE FAILS TO

OPERATE

.

Applicable Configurations

M109A4/M109A5

Tools

General mechanic’s tool kit (item 64, Appx H)

Multimeter (item 36, Appx H)

TA-1 probe kit (item 43, Appx H)

Equipment Conditions

Batteries disconnected (para 8-28)

A

1. Remove external power receptacle guard

(para 8-39).

2. Disconnect leads 496 and GND from

external power receptacle.

3. Using an external power source, apply 24Vdc

to the external power receptacle.

4. Place red lead of multimeter on external

power receptacle positive terminal (lead 496)

and black lead on negative terminal

(lead GND).

5. Check for voltage.

Is voltage present?

I

Replace external power receptacle

(para 8-39).

I

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