IBM Selectric Service Manual

Section 1. Lubrication
GENERAL PROCEDURE
Power clean the printer with the covers removed. Clean the feed rolls, platen, and
deflector. Unless otherwise stated, all parts of the printer should be inspected and
lubricated once every three months. NOTE: Lubrication must be applied judiciously
to el iminate 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 "All bearing areas having a sliding motion
use
IBM #23 and all bearing areas having rotational motion use IBM #10 unless other-
wise specified".
Machines with power on 24 hours daily require more frequent lubrication than ma-
chines used for single-shift operation. The following areas are primarily affected
by idling time, 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 daily, 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 hoursdaily, we recommend lubricating these
items every six weeks·.
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IBM Selectric Specifications

General

Type	Electric typewriter
Introduced	1961
Keyboard Layout	QWERTY
Carriage Return	Electric
Manufacturer	IBM
Printing Technology	Typeball (golf ball)
Power Source	AC Power
Power Supply	120V AC