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