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 498 of 1275

TM 9-2350-311-20-1

d. Test Run

Carbon monoxide is a colorless, odorless, deadly poisonous gas which, when

breathed, deprives the body of oxygen and causes suffocation. Exposure to

carbon monoxide produces headache, dizziness, loss of muscular control,

drowsiness, and coma. Permanent brain damage or death can result from severe

exposure.

Do not operate powerplant outside of vehicle without adequate ventilation. Buildup

of exhaust gases can cause carbon monoxide poisoning.

Keep tools, power cables, hose assemblies, clothing, and body parts clear of

moving parts on the powerplant. Failure to follow this warning can result in severe

injury or death to personnel.

Do not touch coolant hoses, exhaust manifolds, or turbocharger. These

components are very hot during immediately after engine operation. Failure to

follow this warning can result in severe injury to personnel.

Wear hearing protection while operating powerplant outside of vehicle. High noise

levels can cause permanent hearing damage.

Do not touch power cable assembly connectors while powerplant is operating or

while MASTER switch is set to ON. Failure to follow this warning can result in

electrical shock to personnel.

Do not allow powerplant to exceed 2350 rpm. Damage to engine can result.

Ensure engine coolant and lubricant levels are replenished before operating

powerplant outside of vehicle. Failure to do this can result in damage to

powerplant.

When operating the powerplant while mounted on blocks, be careful to keep

powerplant from vibrating off blocks. Damage to powerplant may result.

1 Push VTM power switch (174) ON.

2 Perform STE/lCE-R confidence test (TM 9-4910-571-12&P).

4-37

WARNIN G

CAUTION