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 1064 of 1275

TM 9-2350-311-20-1

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Turn off MASTER power switch.

Remove calibrated orifice from hose (6) and return to tester case.

Connect hose (6) to driver's heater.

Remove airflow cap (5) and corm- hose (3) to air purifier manifold (4).

Remove two airflow caps (5) having holes and install two solid airflow caps on remaining two manifold (4)

openings.

Install spring clip (1).

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