TM 5-5420-227-24
NIGHT VIEWER ACCESS DOOR AND SEAL REPLACEMENT (Sheet 3 of 5)
ASSEMBLY:
1.
Insert small bushing (A) into bottom hole
and large bushing (B) into top hole in
cupola (C). Use 3/8 inch punch and
hammer to fully seat bushings in holes.
Using putty knife, apply thin coat of
2.
adhesive on seal and packing grooves of
access door (D) and cupola (C).
NOTE
Use care to keep adhesive in
groove only. Wait until adhesive
is tacky before installing new
packing and seal.
Lay new preformed packing (E) and
3.
new seal (F) into grooves carefully
without stretching or compressing
them.
Use dry cleaning solvent to remove any
4.
excess adhesive on or near preformed
packing (E) or seal (F).
Go on to Sheet 4
3-32.18 Change 1