A10.
You should use DOD-L-85336 lubricant for
the M61A1 gun.
The breech-bolt assembly has now completed a full
firing cycle through the elliptical-shaped main cam
path. It has performed seven actions or operations in the
following sequence:
1.
Feed
2.
Chamber
3.
Lock
4.
Fire
5.
Unlock
6.
Extract
7.
Eject
All six breech-bolt assemblies repeat this firing
cycle until the clearing solenoid is actuated, and the gun
starts the clearing cycle.
Clearing Cycle
The clearing cycle starts when the clearing
solenoid is energized. The clearing solenoid depresses
the clearing sector arm to the gun housing. This places
the clearing sector arm in a ready position. The first bolt
assembly that passes the sector arm triggers the
actuating pin that lets the sector arm continue to the
clearing mode position. This diverts the succeeding
bolt assemblies into the clearing cam path (fig. 6-11).
6-9
Figure 6-10.—Ejection of empty case.
Figure 6-11.—Breech-bolt assembly in clearing cycle.
