DRIVER'S HATCH NIGHT VIEWER LATCH REPLACEMENT (Sheet 5 of 6)
For tighter latch assembly contact with
night viewer, back off (toward clevis) nut
(M) about two threads, using 1/2 inch
Using 1/2 inch wrench, tighten nut (L).
Perform steps 6, and 7. If more adjust-
ment is necesssary, do steps 9 thru 11 again
until you have a satisfactory fit.
Have another person support night
viewer and push release lever
while performing the following
13. Attach scale to end of latch handle and
measure force to begin movement of han-
dle. It should be 9.5 to 15.5 pounds.
14. If forces to begin movement of handle is
less than 9.5 pounds or more than 15.5