Table of Contents
Advertisement
3. Replace magnetunit.
4. Make adjustments 8 and 9 in Figure 4-2 (Part 2).
The escapement armature pivot spring must hold the
escapement armature against the yoke at the pivot point as
shown at 2, Figure 4-2. Avoid putting sharp bendsin spring
straps while forming them. The outboard edge of the
armature is notched at a point near the hole for the
operating pin; the end is ground at a 5-degree angle. The
armature must be upright for proper operation.
— <a nme
\
\
/
Insert 0.010"
\
/
feeler gage
\
5
NY
fos,
~~~
Hy
'A
;
220 - 260 grams
X — 10 blade
Fa
250 - 300 grams
X — 10 blade
.
0.003" off support
\
\.
\
Escapement Gearing: Keep escapementgear train lubricated
on machines that use the drum-type friction clutch. Keep
card chips and other foreign matter out of escapementgears
and friction drive. Faulty escapement may be caused by
incorrect torque at the friction drive. All gear shafts
protruding through bearing support must be pulled to the
extreme forward position before tightening collars. Be sure
unsealed bearings are capped.
Armature just clear of escape
wheel -- armature may nip teeth
but rotation continues
—_— a
"~~
sy
yo
\
/
\
/
\
/
\
/
\
|
[
=
4
|
\
I
\
NO
\
/ Insert 0.008"
'
J
feeler gage
Adjust contact mounting
bracket to obtain condition
shown at A and B
Operating pin must be free
Make adjustment 9 under power
=o
~~,
" —
|
sy
7
Made with 0.006" between
'
armature and yoke
\
/
|
\
0.006" and 0.009"
measure at this point
to obtain A and B
Figure 4-2. Escapement Adjustment (Part 2 of 2)
/
Not made with 0.009" between
armature and yoke
29 FEMM
(4/69)
4-3
Advertisement
Table of Contents
