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 246 of 1275

TM 9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

l.

AIR CLEANER BLOWER MOTOR CIRCUIT —

(1) BLOWER MOTORS FAIL TO OPERATE WHEN

CONTINUED

VEHICLE IS IN DRIVE

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

Two

Multimeters (item 36, Appx H)

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

. .

Equipment Conditions

(Long test leads may be needed for some tests;

Engine compartment access cover removed (para 11-5)

16 AWG wire may be used as an extension.)

Transmission left access door open (TM 9-2350-311-10)

Air intake grille open (TM 9-2350-311-10)

NOTE

Vehicle must be in gear in order for fans to operate. All

steps require this condition unless otherwise specified.

3-146

(para 8-36).