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 397 of 1275

TM 9-2350-311-20-1

CONTINUED FROM STEP A

B

1. With connections and VENTILATOR

BLOWER switch in the position where

voltage was present in step A, move black

lead of multimeters to socket C (lead 159B).

2. Turn MASTER switch ON and check for

voltage.

3. Turn MASTER switch OFF.

Is voltage present?

Go to step D.

C

1. With multimeters disconnected and socket B

(lead 159A) grounded, place VENTILATOR

BLOWER switch in opposite position of

where voltage was obtained in steps A and B.

2. Place red lead of multimeters in socket C (lead

159B) and black lead in socket A (lead 159C).

3. Turn MASTER switch ON and check for

voltage.

4. Turn MASTER switch OFF.

Is voltage present?

Replace personnel ventilation blower

(para 11-24).

CONTINUED ON NEXT PAGE

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