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 8 of 1275
TM 9-2350-311-20-1
WARNING
FALLING EQUIPMENT HAZARD
Never crawl under equipment when performing maintenance unless the equipment is securely blocked.
Keep clear of the equipment when it is being raised or lowered. Do not allow heavy components to
swing while suspended by a lifting device. Exercise extreme caution when working near a cable or
under tension. in case of injury, seek medical aid immediately (FM 21-11).
WARNING
FALLING EQUIPMENT/ROLLING VEHICLE HAZARD
Unless otherwise specified, perform all maintenance procedures with all equipment lowered to the
ground, transmission in neutral, parking/emergency brake applied, and engine stopped to prevent
possible injury due to falling equipment or rolling vehicle (FM 21-11).
PARKING HAZARD
Do not park vehicles head-to-head. Injury to personnel or damage to the vehicles could occur if one
vehicle jumps (FM 21-1 1).
STEAM UNDER PRESSURE
Remove radiator cap slowly to relieve pressure before completely removing it when the engine is hot.
Failure to follow this procedure could cause severe injury. If you are scalded by steam, seek medical
aid immediately (FM 21-11).
WARNING
NUCLEAR, BIOLOGICAL, AND CHEMICAL (NBC) HAZARD
If NBC exposure is suspected, all air filter media must be handled by personnel wearing full NBC-
protective equipment (FM 21-1 1).
EXPLOSION HAZARD
Cylinders must not be dropped, struck, or subjected to any temperature above 1400F (60°C). This could
result in an explosion and injury to personnel (FM 21-1 1).
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WARNING
WARNING
WARNING
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