Telescope return spring
RESTRICTED
h.
If the above does not check, make the ap-
propriate adjustment on the telescope
return spr-
in g
and check as
before.
1.
If the correct spring tension cannot be
obtained
, finer adjustment may be had by turning
the
telescope
return
spring housing 180°.
j. Precautions:
Care should be taken in order that
the two lengths of the cable are not twisted.
C.
cable should not double wind.
Installation
• Extreme care should be taken so that
of The Double the sighting angle mirror does not become scrat-
Cable (Cont 'd)
ched or damaged.
D. Inter-
In the interchanging of sights and stabiliz-
changeability ers,
the
following points must be considered,
of Sights.
checked, and necessary adjustments made.
C. L. I. 40-12
The dovetail shall be aligned parallel to
the
fore and aft
axis of the plane.
2.
The drift pointer clearance shall be .012"
or morejoltage in sight and stabilizer shall cor-
respond.
4.
Check for fit
of the sight stem locking
pin (maintenance outline).
5.
Check
for
fit of (directional) bombsight
connecting arm pin
(refer to maintenance outline).
6.
Check for fit of drift worm
and gear (main-
tenance outline).
play
"(maintenance outline).
Check for fit of sight stem and sight stem
Changes of
1. The follow-up type of A.E.S. has been re-
M-9 Over M-6
moved.
2. 24 volts.
Fig. 56
M-9 sights the ground speed drum
has
been removed.
4.
Ground speed drum prism removed?
Honeywell (mercury) Erection System in-
stalled
on some M-9 sights.:
The M-9 stabilizers have a leveling bubble
built
into the stabilizer.
•
A hole in the housing, left of center of
of the drift
scale, permits access to the right
front
stabilizer mountina bolt.
8.
Stabilizer has four (4) mounting bolts in-
stead
of three
(3).
3.
Voltage
in
and
(maintenance
outline).
some
6.
175