PS Magazine - TB 43-PS-699
PS, The Preventative Maintenance Monthly
ISSUE 699
FEBRUARY 2011
25
PS 699
FEB 11
1.
Make sure the MK 19 is cleared and the bolt is forward.
2.
Open the top cover assembly.
3.
Remove the alignment guide and ogive plunger assembly.
4.
Place the feed slide adjustment tool
into the feeder base between the round
positioning block and primary pawl with
the rear of the tool aligned with the
ammo link slot.
9.
Open the cover and remove the secondary
drive lever. Remove the screw and the locating
washer on top of the secondary drive lever.
Move the selector bushing so the next higher
number aligns with the arrow on top of the
secondary drive lever.
Adjusting
Secondary Drive Lever
Go through
range of
adjustments
until you
get correct
alignment
Left edge
of indicator
within
width of
white line?
several years ago
mwo 9-1010-230-50-1
changed the mk 19’s
fixed secondary
drive lever to an
adjustable lever.
aren’t you
supposed to
be adjusting
my secondary
drive lever?
I
think
so,
but I can’t
find anything
on how to
do that!
no problem.
here are the
instructions…
repairmen at field
maintenance are supposed
to be adjusting the lever,
but many don’t because they
don’t have the instructions
that came with the mwo.
MK 19 Machine Gun…
5.
Make sure the secondary drive lever is
positioned all the way to the right. Close
the top cover.
6.
Going
through
the
ammunition
entrance, push the tool with your finger
against the round positioning block. The
tool will audibly click into position.
7.
Pull the bolt fully to the rear without stopping. Move the handles forward and up.
10.
Assemble the secondary drive lever and do the alignment check again. If the left side
of the indicator is still not within the width of the white line, remove the lever again
and move the selector bushing so the next higher number aligns with the arrow on top
of the secondary drive lever.
Keep doing Step 10 at each setting from +3 to -3 until the left edge of the indicator is
within the width of the white line.
If you adjust the selector bushing from +3 to -3 and still can’t get the correct alignment,
the MK 19 needs to go to support.
If you lose the adjusting tool, you can order a new one with NSN 1005-01-467-9435.
Align rear of tool with ammo link slot
8.
Look at the tool through the ogive plunger
hole. If the lever is adjusted correctly, the
left edge of the indicator should be within
the width of the white painted line. If the
adjustment is correct, remove the tool and
you’re done. If the alignment is not correct,
continue with Step 9.
699.24-25.indd
1-2
12/27/10
4:45 PM
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