IBM Selectric I/O Reference Manual page 3

GENERAL PROCEDURE
Power clean the printer with the covers removed. C lean the feed rolls, platen/ and
deflector. Unless otherwise stated/ all parts of the printer should be inspected and
I ubricated once every three months. NOTE: Lubrication must be appl ied judiciously
to eliminate excessive quantities and prevent migration or spin-off into electrical con-
tacts.
LUBRICATION
Figures 1 through 7 show the points that require lubrication. The number references
require IBM #10. The letter references require IBM #23. Points that do not require
lubrication every three months are identified with the required frequency in the ref-
erence list. A rule of thumb should be "AII bearing areas having a sliding motion
use IBM #23 and all bearing areas having rotational motion use IBM #10 unlessother-
wise specified
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Machines with power on 24 hours daily require more frequent lubrication than ma-
chines used for single-shift operation. The following areas are primari Iy affected
by idl ing time
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since only the operational shaft is driven:
1. Motor and motor pulley
2. Cycle-clutch spring and arbor
3. Driven-pulley hub and bearing
4. Operational cam bearings
5. Right-hand operational shaft and shift cam bearing
6. Shift-clutch spring and arbor.
Since these machines are hot 24 hours dai Iy, some lubricant evaporation can be ex-
pected in areas not driven during idling, however, they are not nearly so affected as
items 1 through 6. Where power is on 24 hours dai Iy
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we recommend lubricating these
items every six weeks.