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Figure 6-2.—Gun components (exploded view) | Up
Aviation Ordinanceman - Aviation theories and other practices | Next
Figure 6-5.—Rear housing assembly and related parts (external view) |
adapters with respect to the gun's axis. These locations
are possible because the bearing retainers can be
mounted to the housing in increments of 60 degrees.
The adapters reduce the amount of recoil and
counter-recoil forces transmitted to the supporting
structure when the weapon is fired.
Firing contact assembly. The firing contact
assembly is mounted to the housing so that the
connector is outside the housing, and the spring-loaded
cam is inside the assembly. The contact assembly
provides the necessary path for the current to enter the
housing and reach the breech-bolt assembly. This path
goes through the connector to the conductor, to the
insulated insert in the contact cam assembly, and then to
the breech-bolt assembly.
Clearing solenoid assembly.
The
clearing
solenoid assembly is mounted near the back of the gun
housing. It is linked to and controls the movement of
the clearing sector assembly.
Clearing sector assembly. The clearing sector
assembly is linked to and controlled by the clearing
solenoid assembly. When the solenoid is activated, the
sector arm diverts the bolt assemblies into the clearing
cam path.
Guide bar. The guide bar is located on the gun
housing. It guides the rounds into and out of the
extractor lip that is located on each of the six
breech-bolt assemblies.
Breech-bolt assembly. The breech-bolt assembly
picks up a round as it enters the gun, transports it to the
firing chamber, locks it into the firing position,
transmits the firing voltage to the primer of the round,
and returns the empty case to the guide bar, where it is
cammed out of the gun. An extractor lip on the front of
each bolt assembly engages the rim of a round
throughout these actions.
There are six breech-bolt assemblies in the gun.
Guide slots or grooves on the side of the bolt body
permit it to slide on the rotor tracks. The bolt roller shaft
determines the position of the bolt as it follows the main
cam path or the clearing cam path in the housing.
6-3
Figure 6-3.—Gun component locations.
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