A.H.S
M61A1
M61A1 GUN SYSTEM
MAINTENANCE
RANDOM
100

Describe the A.H.S ... Double...

Double-ended linkless system

100

What purpose does the anti-jam pin serve?

to prevent the gun from jamming during download

100

The max rate of fire and min rate of fire

6000 SPM and 4000 SPM

100

how many elements and "carrots" must be used to check the entrance unit after reassembly?

5, 5

100

The upper gun housing body is cracked after being inspected during a flight safety. Do you replace just the upper portion, or both upper and lower?

Both. They come as matched sets.

200

This component moves the rounds forward along the the drum outer partitions

the helix

200

what type of lubricant cannot be used in the gun lubricator assembly

TEFLON ADDITIVES

200

what are the two steps in the clearing cycle?

feeding and ejecting

200

the lubricator is filled with this type of lubricant

MC3000

200

BeCu can be found on one of the following items:

1. return chute;
2. muzzle clamp;
3. mid barrel clamp; or
4. breech bolt

muzzle clamp

300

This component holds the rounds in place until unloading

the partitions

300

Which sub assembly (unit) takes rounds from the transfer unit and places them in the breech bolts?

feeder unit

300

which component is the HDU mounted on

entrance cover

300

How many rounds do you need to complete the gun post-test functional (F.L.U.F)

100

300

What type of grease must be used on the gun rotor at all times?

TW-25B

400

the path of the feed chute is from _____ to the _____

exit, transfer

400

the gun is FIRED (controlled) __________ and is ___________ driven.

electrically, hydraulically  

400

which item in the A.H.S lifts unfired rounds from the conveyer and places them into the retainer partition?

entrance unit

400

You find your upper unlocking cam cracked during an 18 month OSI. Do you replace just the upper, or both the upper and lower?

Both. They are replaced in pairs.

400

During the barrel erosion check, what is the max measurement between the highest and lowest barrel erosion reading?

0.010"

500

How many elements form the conveyer assembly

100

500

Where is the GUN serial number located?

The rotor

500

what is the first step in removing the breech bolts from the gun?

place clearing sector into the firing position. (the breech bolts must first be rotated into firing position so they don't obstruct the clearing path during removal. Once ready, place clearing sector into clearing and rotate barrel cluster so one breech bolts comes up at a time

500

What is the individual laminated shim thickness on the bearing retainer shim?

0.002"

500

what is the firing voltage used by the CF-188 for the M61A1?

238-290 VDC

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