File Feed Clutch - IBM 1402 Reference Manual

c. Loosen clamped hub on index shaft.
d. Unplug index cable.
3. Remove four drive belts.
a. Contact roll drive (front).
b. File feed drive (rear).
c. Motor drive (rear).
d. Clutched feed roll drive.
4. Remove clutch magnet leads at terminal block.
5. Remove four hex-head clutch drive assembly
mounting screws.
6. Remove assembly through rear of machine.
INSTALLATION
1. Set drive assembly into position from rear of ma-
chine.
2. Install four drive assembly mounting screws. Do
not tighten.
3. Position clutch drive assembly on scribed lines.
Tighten mounting screws.
4. Install dynamic timer index. Leave clamped hub
loose.
5. Set index to 315' ± 1°. Block armature and crank
machine until detent keeper falls behind drive
arm. Tighten clamping hub.
6. Install clutch drive belt and adjust idler pulley.
Loosen picker knife camshaft pulley locking
screws.
7. Time picker knife camshaft by tripping read
clutch and setting timer at 216° for a 3-group
brush, or 212° for a 2-group brush.
a. Place a card in the hopper and against first
feed rolls.
b. Turn camshaft in normal maehine direction
until feed knives touch the card.
c. Tighten pulley lock screws. (This is a starting
point for brush timing; refer to wiring diagram
for final brush timing. )
d. Change picker knife camshaft for proper brush
timing by slipping drive pulley on camshaft.
8. Time RCCB's by using set screw-retained gear on
the RCCB shaft.
9. Install the other three belts and unblock clutch
armature.
10. Check timings.
a. Clutch engagement time (315° ± 1 ° ).
b. Brush impulse CB timing.
c. RCCB timing.
d. RLCB timing.
File Feed Clutch
ADJUSTMENTS
1. With clutch latch against latch step on sleeve,
loosen split collar and rotate collar backwards
until stopped by spring, fully uncoiled, inside of
sleeve.
2. Hold split collar in this position and rotate detent
gear to 1/16" past detent position. Tighten screws
in split collar. This adjustment should result in
1/16" overthrow. See Figure 3-6.
REMOVAL
1. Remove covers, and upper and lower magazines.
2. Remove drive unit from machine.
3. Mark cams and shaft to maintain relationship. Re-
move rear pulley and front and rear joggler cams.
4. Remove rear bearing retainer plate.
5. Mark side joggler cam and shaft to maintain re-
lationship.
6. Loosen side joggler cam, clutch hub (with grease
fitting), and clutch drive gear on joggler cam
shaft. (The set screws are seated in undercuts
on shaft and must be loosened a full turn.) Slide
shaft opt rear of unit.
7. Remove clutch assembly through bottom of unit.
The clutch can now be disassembled and spring
can be
r~rng,ved.
INSTALLATION
Follow removal steps in reverse order. Be certain
clutch latch and detent are in correct positions, and
grease fitting is over slot in shaft. The clutch drive
sleeve and side joggler cam should hold clutch to-
gether, with clutch in full mesh. The sleeve and side
joggler cam. should not, squeeze clutch so tightly as
to cause binding when' clutch is latched. Check all
drive unit adjustments after unit is replaced in ma-
chine.
CLUTCH LATCH
1/16'~~AT
FULL
OVERTHROW
CLUTCH DETENT
Figure 3-6. File Feed Clutch Adjustments
3-5