TM 9-2350-222-20-2-1
2-5.
M19 CUPOLA SEMIANNUAL (180 DAY) PREVENTIVE MAINTENANCE (CONT)
FRAME 2
ITEM TO BE INSPECTED
STEP
PROCEDURE
REFERENCE
Cupola Access Door (On Cradle)
1.
Lubricate all hinges and latches.
LO 9-2350-222-12
Terminal Board Assembly (Cupola a. Remove and disassemble terminal
2
Notify support mainte-
Slip Ring)
nance
b. Check terminal board strips (A),
contact boards (C) and springs (B)
for wear, dirt, grease, foreign mat-
ter, corrosion and electrical burn
marks. If strips (A) or springs (B)
are dirty, clean with cleaning sol-
vent PD-680.
slowly traverse cupola until
terminal board stripe (A) just
begin to engage left and right
contact board springs (C).
3.
Azimuth Lock Assembly
a. Remove and disassemble the azi-
TM 20-2-3 (para 36-66, 36-
muth lock assembly.
68)
b. Clean all component of the azi-
muth lock assembly with a cloth or
sponge soaked in drycleaning sol-
vent.
c. Wipe all parts dry with a clean
GO TO FRAME 3
Para 2-5 Cont
2-12
Change 3
