IBM 01 Maintenance Manual page 148

REFERENCE MANUAL
MODEL 81
Key Lever Adjustments
1. KEY LEVER BEARING SUPPORT.
Adjust this up or
down so that the key levers trip their respective cams when
the key levers are 1/32" plus or minus 1/64" from the
bottom of the key lever guide comb (Figure 4). The indi-
vidual keys should be checked to be certain that each cam
trip lever can reset beneath the lug on the key lever when
the key lever restores to its full upward position.
Spread open with screwdriver to rai ..
lug and increase clearance
Depress
here or here
to
f~wer
lug and
dose dearance
Figure 7. Individual Key Lever Adjustment
2. INDIVIDUAL KEY LEVERS
which do not respond with
the majority of the key levers may be treated as illustrated
in Figure 7.
3. REPEAT/NON-REPEAT OPERATION.
It is recommend-
ed that for field installation, a two-piece key lever be used
for any letter key position. Installing a one-piece key lever
in the field requires too much time, this should be done
only at the factory.
The repeat/non-repeat operation may be rendered inop-
erative by installing a plunger bushing in place of the
plunger spring in the front guide comb. When making this
change it is necessary to use the repeat plunger used on
the space bar key lever.
Crippling the repeat/non-repeat feature in ET's equipped
with the two-piece key levers will require installing a
standard key lever.
For ease of adjustment and positive non-repeat opera-
tion, crippling of the operational keys should include re-
placement of cam assemblies with the non-repeat style
cams.
4. THE FRONT GUIDE COMB
on machines with approxi-
mate serial number 309,194 to 357,196 for standards and
serial number 102,192 to 116,831 for executives has an
adjustable stop in the front guide comb for repeat/non-
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