TM-9-2350-311-PCL
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
COMBAT VEHICLE; PRE-COMBAT CHECKLIST
OCTOBER 1990
TM-9-2350-311-PCL - Page 2 of 5
TM 9-2350-311-PCL
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VEHICLE EXTERIOR:
Walk-Around and Check
For Fluid Leaks, Damage, Tampering, and Miss-
ing Parts That Prevent Operation.
RADIATOR COOLANT:
Check Fluid Level.
EXTERNAL FIRE EXTINGUISHER HANDLE:
Check Lacing and Seal.
DRIVER’S COMPARTMENT FIRE EXTINGUISHER
PULL HANDLE:
Check Lacing and Seal.
ENGINE/lNSTRUMENTS:
Start Engine. Check
Warning Lights/Gauges.
NBC SYSTEM CHECK:
(If So Equipped).
POWER PACK RESERVOIR:
Check Fluid Level.
CHECK ELEVATING MECHANISM.
CHECK TRAVERSING MECHANISM.
REPLENISHER SYSTEM:
Replenisher Gage Be-
tween 17 and 24 PSI.
CHECK RAMMER SYSTEM.
CHECK RECUPERATOR PINS:
Pins Protrude Be-
tween 1/8 and 3/4 Inch.
CHECK BREECH OPENING CAM AND ROLLERS:
Rollers Are Not Broken. Lube Prior To Firing.
CHECK FIRING MECHANISM.
BREECHBLOCK:
Function Check. Witness Marks
Aligned.
26-32.
FIRE CONTROL:
Mount and Check Components.
MACHINE GUN FUNCTION CHECK.
PIN:045092-000
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