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 401 of 1275

TM9-2350-311-20-1

CONTINUED FROM STEP I

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1. Reconnect lead 159 to circuit breaker output.

2. Disconnect lead 159 from VENTILATOR

BLOWER switch.

3. Place red lead of multimeter in lead 159 and

black lead to ground.

4. Turn MASTER switch ON and check for

voltage.

5. Turn MASTER switch OFF.

Is voltage present?

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Repair or replace lead 159 of accessory

control box ventilator switch-to-circuit

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Replace VENTILATOR BLOWER

switch (para 8-20).

END OF TASK

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