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REVERSE LOCK
CLUTCH PULLEY ASSEMBL·Y
'----DRiVE PULLEY
Figure 2-6. Clutch Drive Assembly
machine until detent keeper falls behind drive arm
.
Tighten clamping hub.
6. Install clutch drive belt and adjust idler
pulley.
At this time loosen the picker knife camshaft pulley
locking screws
.
7. Timing the picker knife camshaft can be
accomplished by tripping the read clutch and setting
the timer at 216
0
for a 2 group brush machine or
o
212
for a 3 group brush machine
.
Place a card in
the hopper up against the first feed rolls
.
Turn the
cam shaft in the normal machine direction until the
feed knives touch the card. Tighten the pulley lock
screws
.
This is a starting point for brush timing.
Refer to wiring diagram for the final brush timing.
Change the picker knife camshaft for the proper
brush timing by slipping the drive pulley on the cam
shaft.
8. Time RC CB's, using the set screw retained
gear on the RC CB shaft.
9.
Install the other three belts and unblock the
clutch armature.
10. Check the following timings
:
o
0
a. Clutch engagement time (315
±
1 ).
b. Brush impulse CB timing.
c. RC CB timing.
d. RL CB timing.
TIMER INDEX SHAFT
·
MAGNET ASSEMBLY
FILE FEED
Principle of Operation (Figure 2-7)
The file feed consists of two basic units:
1. Upper magazine.
2. Lower magazine.
The upper magazine is the tray which holds up to
3600 cards to be fed into the hopper. This tray is
hinged and can be locked at an angle to make the
brush area of the machine more accessible.
The lower magazine contains clutch contr01led
feed rolls that feed the cards into the hopper. Opera-
tion of the helical spring-type feed roll clutch is
controlled by the level of the cards in the hopper.
Under spring tension, tlJ-e front joggler applies
pres·
' :'
sure on the joggler operating lever, causing the lever
to follow the contour of the front joggler cam
.
As
the front joggler cam rotates, the front j<;>ggler
oscillates, joggling the cards into position.
If
there
are sufficient cards in the hopper to cover the sensing
pads, the inward travel of the joggler is limited and
the joggler control lever is not allowed to follow the
low dwell of the front joggler
cam.
There will be no
clutch action or cards fed down into the hopper at
this time.
2-5
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