IBM Selectric I/O Reference Manual page 20

Mtg. Bracket Screws
FIGURE 16. Mounting Bracket Positions
No clearance (the pusher holding the armature away from
rest) can cause mal-selection since the pusher may not
be released when the armature is attracted by its magnet.
Also extra cycles may result since the armature at rest
would be holding the cycle clutch trip bail partially ro-
tated.
9.
Knock Off Eccentrics (Fig.
17) -
Adjust (T2 and R5 arm-
atures manually attracted) to clear the trip bail exten-
sions
by .003"
to
.OOS"
~
Excessive clearance will cause extra cycles due to the
armatures not being knocked off. It is necessary to
knock off the armatures since residual magnetism is
present.
No clearance will cause failure to cycle because the
trip bail will not be able to rotate to trip the cycle
clutch.
Knock-Off Eccentric
Trip Bail
({(J
- t
.003" - .00Sf!
Extension
FIGURE 17. Knock Off Eccentrics
CYCLE CLUTCH TRIP MECHANISM
1. Latch
Sto~
(Fig. 1S) - Position so that the latch lever
overlaps t e trip lever lug by .040" to .045"
Insufficient "bite ll could cause extra cycles since the
tri p lever may sli p off the latch lever.
Excessive "bite
II
may cause failure to cycle since there
is a limited amount of motion available from the arma-
tures to pull the latch lever down.
2-5
Latch Stop
FIGURE IS. Latch Lever
2. Mounti ng Bracket (Fig. lS) - Posi ti on front to rear so
that the cycle clutch latch has a .030" to .035 11 bite on
the sleeve (Fig.
19).
Cycle Clutch Latch
1+--------.030
rr
to .035
11
Bite
Trip Lever
FIGURE 19. Mounting Bracket Positions
NOTE:
Be sure the restoring roller is not touching the restoring
cam.
Excessive bite may cause sluggish release. Insufficient
bite may cause extra cycles.
3. Trip Link Clevis (Fig. lS) - With either the T2 or R5
armature manually attracted, adjust the clevis so that
the latch lever clears the trip lever lug by .005 11 to
.020
II
(Fig. 20).
Trip Lever
--
.005
rr
to .020
II
Latch Lever
FIGURE 20. Trip Link Adjustment