Transport Rolls; Jam Bar; Stacker; Stacker Joggler - IBM 1402 Reference Manual

Transport Rolls
ADJUSTMENTS
There are two types of lower tension rolls in use.
Some use coil springs for tension, others use rubber
blocks. The rubber block style employs a lock nut
under the shear plate; the coil spring style uses a
self-locking nut, which must be held with a wrench
when it is being adjusted.
1. Lower pressure rolls must be centered directly
below upper rolls. This can be done by inserting
a .0l0" feeler gage between upper and lower rolls
and adjusting lower roll mounting brackets until
feeler gage is parallel to card line.
2. Tension on pressure rolls is adjusted by lower
feed roll shaft mounting screws. A pull of 1.5 to
2.5 lbs. must be present when a card strip is
pulled from between rolls (upper roll not turn-
ing ). Tension on front and rear rolls should be
within .25 lbs. Card must be pulled in the same
direction as it is fed. Push-pull scale 9900012 may
be used. After adjustment is made, be sure lock-
nuts on the mounting screws are tight.
Jam Bar
SERVICE CHECKS
1. Check jam bar for correct operation.
2. Inspect jam tape for burrs.
ADJUSTMENTS
1. A jam bar must be positioned for .020" to .035"
clearance between formed points and shear plates
over entire length of card transport. At the junc-
tion of jam bar and jam bar lever, a .0l5" mini-
mum is permissable. See Figure 3-39.
2. Tape must be adjusted so switch will operate
with tape deflection of 1/16".
+0"
1/32" _ 1/64"
CHUTE BLADES
INNER
MAGNET
ARMATURE
Figure 3-38. Chute Blade, Top View
_ 0"
3. Jam bar lever must be adjusted so bottom surface
of shoe is 1/8" ± 1/16" above lowest point of
adjacent deflector springs.
Stacker
SERVICE CHECKS
1. Stacker card restraining and retaining levers
must be clean and free of binds.
2. Card alignment levers should hold 5 to 30 cards
before cards slip onto card pusher slide. See
Figure 3-40.
3. Pusher and card support slides must be free of
binds.
ADJUSTMENTS
1. Space between pocket separators must be 3 5/16"
± 1/64".
2. Pocket separators must be square with transport
rails within .0l5".
3. Form radial guide as in Figure 3-41.
Stacker Joggler
ADJUSTMENTS
1.
Align four bearing bracket assemblies so the
three shafts are free of binds.
2. Maintain 4.000" ± .005" between bases of two
inside bearing brackets. See Figure 3-42.
3. With center shaft assembly shifted toward read
feed, and clutch hubs flush with spring sleeve,
adjust clutch hub, identified by a red dot, for
.003" to .005" clearance when spring sleeve is
flush against mating hub.
Electrical
Components
Solar Cell CB
The solar cell CB is mounted on the back end of the
o
JAM TAPE
>
SWITCH OPERATING PIN
\
>,
,
.020" TO .035"
Figure 3-39. Jam Bar
AOJUSTI NG SCREW
.015" MIN.
3-33