ARMY TM 9-1240-379-34
MARINE CORPS TM 04332A-34
2-4. DAYLIGHT BODY ASSEMBLY MAINTENANCE INSTRUCTIONS. (cont)
INSPECTION/CLEANING/REPAIR
deformation.
1 Inspect contact for corrosion. Clean and
polish contact with fine crocus cloth or
5 Check numerical engraving on elevation
e m e r y paper.
and deflection knob assemblies slip
2 Inspect purging valve stem and
scales for legibility.
pneumatic valve cap for worn or
damaged threads.
6 Clean optical surfaces in accordance with
TM 9-254.
3 Inspect valve core for corrosion.
7 Replace any missing, damaged, or broken
4 Inspect valve cap strap for tears and
parts. See TM 9-1240-379-34P.
REASSEMBLY
1 Assemble valve cap strap (1) to purging
valve stem (2).
2 Apply sealing compound to tapered
thread end of purging valve stem (2).
3 Install purging valve stem (2) into
daylight body assembly (3) and tighten.
4 Install valve core (4) into purging valve
stem (2).
5 Assemble pneumatic valve cap (5) to
loose end of valve cap strap (1) and in-
stall pneumatic valve cap (5) on purging
v a l v e stem (2).
6 Apply sealing compound to threads of
purging screw (6); install purging screw.
2-20
