Automatic release mechanism
RESTRICTED
Automatic
Release
Mechanism
(Cont 'd)
3.
Forward
View
Mechanism
a. M-3
b. M-6
4.
Sheaves.
5.
Installation
of Telescope
Cable M-3
M-4's
and
Up
dressed
a resistance
is obtained on this circuit.
the points closed,
the points are
dirty.
Se sure that bombsight plug is disconnected.
more-than !/32"
points, or 1/64" from each point.
Check for binding, dirt, and proper opera:-
ion of prism.
Check for binding, dirt, and proper operat-
ion of
rotating mirror.
I f
the
assembly binds, clean and oil with
minute amount or
light bombsight oil.
Check sheaves for dirt, nicks and dents.
the sheaves are dirty clean with sharpened orange
If sheaves
are nicked remove
knife edge Arkansas Stone. If sheave is bent, it
should be
replaced.
CARELESSNESS ON THE PART OF THE MAIN-
SHEAVES. SHEAVES MUST ROTATE FREELY ON THE PINS.
See Section V, page 75.
Remove No. 5 sheave, and No. 5 integral shaft
pinion.
Thread the cable through the eyelet in #5
sheave, and form
a half loop in the soldered end
of the cable slightly larger than the anchor screw.
Remove the anchor screw and washer and
place the
end of
the cable under the washer. Replace
the washer and screw, tightening the screw slight-
ly. Pull the cable taut under
the washer next to
the eyelet and
tighten the screw.
Tighten
the
anchor screw.
C.
Wedge the cardan
so that #4 sheave is above
housing.
Rotate the mirror to min. sighting angle,
wedge
between the
gear sector and
to hold it
toothpick
may be
between the teeth
integral shaft
pinion and the gear sector or a piece of cord or
may be used. The gear sector pointer should
now be ahead of index as far as possible.
points
clean.
with
Not
shouid
be
removed
from
If
stick.
nicks
with
NOTE:
TENANCE
PERSONNEL
1S
FOR
DAMAGED
b.
looped
d.
and
place
a
the
cardan
at
min.
placed
of
the
cloth
157