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J
.)
:..
....
c
D
- 53 -
(B-138)
(9)
Replace the switch end shield screws using the scme precaution
in
tightening as in the foregoing item.
·
(10)
Apply the push end of a
12
lb.· scale against the tan
end
of the
shaf't
and
push parallel to the sha.ft. It should require at least
7
lbs. pressure to start the sha.ft moving.
(11)
Replace the motor fan
ani
pinion. Replace the motor unit on the base
and
check the motor plate adjustment.
BASE
UNIT
MOTCR
UNIT SLIP CONNECTION SPRINGS ADJUSTl£El'fl'
(
l) With the motor unit in position on the base, hook a
4
lb. scale Wlder
one of the end motor unit slip connection springs just above the head
of the terminal screw on the motor connection block,
and
pull
toward
the front of the base at right angles to the spring. It should.
require
2
to
4
lbs. to just break contact. Measure the pressure ot
the opposite end slip connection spring in the same manner. This
pressure
can
be regulated
by
removing the motor unit
and
bending the
springs.
(2)
With the motor unit removed and a straight edge placed across the
two
end
springs, there should be some clearance, not more than
.015",
between the two inner springs
and
the straight edge. Adjust by bend
ing the two inner springs.
LINE
JACK SPRINGS.
ADJUSTMENT
It should require
1
to
2
lbs. pressure, using a
12
lb. scale, on the
curved part of the jack spring to just open the co ntacts. With the typing Wlit
in pos:l.
tion on the base, the line jack contacts should be separated
.02011
to
.0601'.
Bend the long contact spring to obtain these requirements.
KEYBOARD JACK
SPRINGS
ADJUSTMENT
It should require
1 to
2
lbs. pressure, using a
12
lb.
scale, on the
c
urve
d part of the jack spring to just open the contact. With the keyboard
inserted
in
the base, the keyboard jack springs should be separated
.025"
to
.075".
All slip connection springs should be in line.
To adjust, first ranove the four base plate mounting screws
arrl
the
base plate. Then ranove the four screws that hold the slip connection .roounting
plate assembly to the base
so
that the bakelite cover can be remo"(ed,
and
then
replace the four screws.
Next
mea
sure
the pressure of the two keyboard jack
springs. With the keyboard inserted in the base the keyboard jack springs
should
now
be separated
by
.00511
to
.025".
This clearance
mq be
maasured from
above the base
by
inserting
a
wire gauge between the contact springs. Bend the
long contact spring of the tYro jack springs to obtain this spring tension
and
bend
the short contact spring to provide this contact gap. (After the bakelite
cover is replaced the jack contact springs shoo.ld be separated
by
.025"
to
.075".)
Remove the keyboard from the base and with a straight edge laid across
the two keyboard jack springs, align the other slip connection contact springs