TM 5-3610-259-14
to release frame and gasket.
to remove level indicator.
3.
Remove screws and washers
4. Remove transparent cover.
5.
Remove screws and washers
6.
Replace level indicator and loosely secure with screws and washers.
7.
Move indicator ends up or down to align level indicator. Then
tighten indicator screws.
8.
Reinstall transparent cover, gasket, and frame.
9.
Secure with screws and washers.
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