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REASSEMBL. Y PROCEDURE
2. F·tube
2-1.
Depression
prism
unit (Refer to
Fig.
5
and
6)
l)
Attach
lens
charnber
G)
(with @
and
@ inside,
to
be
positioned
as
to
prism
holder@.
using
washer @
and
screw
@ x
2.
2) lnsert
tenses
@ and @
(positioned
as
fb.±.
thicker)
o~T
into prism holder
~
and
nx
them with retaining
ring
@.
3)
Place
cylindrical rollers @
x4
and
parallel
pin
56C
on the
fiducial roiler
race
@)
attached to binocular body
attaching
plateeij)
through
@x2
(Fig. 23). Apply
oil
G7920 to @ and
~
Fig.
22
R-4106.A
2.
F·tube
Up
j_
~Tthicker)
Down
4)
Place
the lower
side
of
roller
race
(V onto cylindrical rollers
@
of
the
above
cited fiducial
roilers
race
@,
and @ x 4
and @ onto the upper sur·
face
of
roller
race
@.
through
@x2.
5) Apply adhesive
No.
616 to the
contact
surface @ (at three
points), and attach
9
to
@ withscrews
~x2
transitorily.
~
~--
57'
~~
A
6)
Make
positional adjustment
of
(V on the upper surface
of
Fig.
23
e@,
so
that@
operates smoothly witltout
any
slack
in
respect to roller
race
@i.2
of
~
Fix
it with screw
~
x
2.
Operating torque
of@
is
to
be
SOg
- 60g, measured with a tension
gauge.
-28-