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a Iso be removed and the center beari ng dri lied.
This wi II improve the lubrication of the cyc Ie clutch
pulley and increase center bearing life. Remove the
felt w:ick from the lubrication hole and dri II a #32
hole through the upper part of the bronze bearing.
Be sure to remove a II dri Iii ngs from the i nsi de of the
bearing and lubrication hole. The felt wick should
be replaced to keep dirt out of the bronze bearing.
Caution: The center bearing is an oi I impregnated
bearing and should not be flushed with cleaning fluid.
Note: Before and after assembly, the center bearing
shou Id be lubricated with # 10 oi I. The pu Iley shou Id
be inserted in the bearing before replacing the felt
wick.
15.8 CYCLE CLUTCH RESTORE CAM REPLACEMENT
There
have been instances where the cycle clutch re-
store cam wi" break or warp and require immediate
replacement. A time-saving method of replacing the
cycle clutch restore cam when it is not necessary to
remove the cycle shaft is outlined below.
1. Remove the two locking screws and c lips from
the white nylon restore cam.
2. Cut the white nylon restore cam with a pair of
dykes or wire cutters and remove the sections of
the cam from the shaft.
3. Using a fine hacksaw or coping saw blade, cut
Cut Here'
Figure 15.1
a new c yc Ie c lutc h restore cam as shown in Fig u re
1.
Cut Here
4. De-burr the two sections of the restore cam,
p lace them on the cyc Ie shaft, one at a time,
and install their locking screws and clips.
5·22
5. Adj ust the overthrow of the cyc Ie shaft for .007/1
to .015/1 (3° to 5°) of rotary motion. This ad-
justment must be checked on both lobes of the
cam since the cam is now split and each lobe is
independently adjustable. It wi" only be nec-
essary to loosen one set screw to adjust the over-
throw on that particular lobe. When both sides
are the same, re-tighten the set screws.
This method of replacing a restore cam wi" save ap-
proximately one hour and fifteen minutes in the Field.
It shou Id be remembered that this fix is a temporary
fix and the white nylon restore cam shou Id be replaced
the next time the cycle shaft is removed for spring
clutch rep lacement or pu Iley rep lacement .
The new
cyc Ie clutch restore cam may be ordered
under Part No. 1135995.
15.9 CYCLE CLUTCH INHIBITOR
The new style cycle clutch inhibitor mechanism which
wi II be used on all keyboard less SELECTRIC I/O
Pri nters has been illustrated be low.
The adjustments are as follows:
1. Adjust the inhibitor trip lever so that the bottom
edge of the inhibitor pawl is flush with the bot-
tom edge of the cyc Ie clutch latch wi th a II parts
at rest.
2. The inhibitor pawl mounting bracket shou Id be
adjusted so that the inhibitor pawl clears the cy-
cle clutch latch by- .030" to .035" with all
parts at rest.
Latch
,Figure 15.2
15.10 CYCLE CLUTCH CHECK PAWL
Some cyc Ie clutch spring wear has been traced to the
check pawl bouncing back out of its detented posit.ion
on
the cyc Ie shaft ratchet when the cyc Ie shaft lat-
ches up. We previous Iy recommended increasing the
spring tension on the cycle clutch check pawl to al-
leviate this problem.