TM-9-2350-311-34-2
CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM
TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 1994
TM-9-2350-311-34-2 - Page 83 of 552
TM 9-2350-311-34-2
2-23 TROUBLESHOOTING CHART
a. BREECH MECHANISM
The breech mechanism consists of the breech operating handle with detent plunger, cradle cam, clutch pin, firing mecha-
nism block assembly with firing mechanism, and spring pack. Below is a pictorial view of the breech mechanism.
The breech operating handle is used to open the breech prior to firing. The breech will open automatically after firing of the
cannon. The cradle cam is used to close the breech. The firing mechanism is used with a primer to fire the cannon.
2-21
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