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 TM
9-1290-232-34&P
INSPECTION UPON RECEIPT (CONT)
3-2.
Check that level vial cover (1)
Adjust level vial cover
1.
t u r n s easily and is held firmly
(1).
in the open position and in the
closed position.
TM
43-0139
Check that all marks and
2.
a . Paint
numbers on dial scale (2),
b. Clean
JPG 41C
designation plate (3) and
Replace if missing
or 4-9
micrometer (4) are easy to
marks or number
read.
Tighten if loose or
Using jewelers' screwdriver,
3.
replace if missing.
c h e c k that setscrew (5) is tight.
Replace if missing.
4.
Check that plug (6) is tight
and held in place by setscrew
(5).
Tighten. Replace if
5.
Using
3/16"
flat
tip
missing.
s c r e w d r i v e r , check that three
crews (7) holding knob (8) in
place are tight.
a. Adjust worm shaft
Turn knob (8) fully clockwise,
6.
bearing.
t h e n fully counterclockwise.
b. Replace
Knob (8) must turn smoothly
elevating
worm
with no binding.
shaft.
7.
Check reflector (9) for fading
a. Clean
JPG 41C
and scratches (M13A1,
b. Replace
M13A1C and M13B1 only).
8.
Using 1/4" flat tip screwdriver,
Tighten. Replace if
c h e c k that three screws (10)
missing.
are tight.
9.
C h e c k elevation fire control
Paint chipped or
TM
43-0139
s c r a t c h e d area.
quadrant (11) for chipped or
scratched paint.
NOTE
C o r r e c t faults listed
on DA Form 2404
t h a t may affect the
performance test.
Do performance test
(Vol I, Chap 2).
END
OF
TASK
II-3-4
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