IBM Selectric - Spacing

SPACING
No
No
Key Lever Linkage
Key Lever Pawl Adjust.
2.2
D Interlock 2.4
Spocebar tnterlock 2.12
See Output Mode
Filter Shaft Interlock 2.12
Binding Release Lever
Spring Off Interposer 2.13
Wrong Spring 2.17
No
Release Lug AdjU~t. 2.1
Bind In Release Lever
Or Com-Rust
Yes
Check:
Carrier Bind
Dust Covers
Yes
Not Enough
Feed
Roll Mounting Arms
Cord Holders, Rear Anvil
and Shoes
Rear Carrier Shoe
Escapement Cord Off Pulley
Pinion
Gears Bind
MoinSpringTension 2.11,2.18
Escape Sha ft 2. 19
Check:
Interposer Restoring 2.16
Interposer Latch Spring·
Off Or Binding
See SH 2.15
Worn Pawl Fig 3.1
Yes
Escapement Link 2.7
Escapement Cam Is Restricting Trigger 2.9
Trigger Not Latching
Latch
To Bail Clearance 2.3
Figure 2.0
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
SPACING
Spacebar Adjustments
Wi th the interposer and cam latched, form the Re lease
Lug to obtain .035
11
- .045
11
clearance between the
Interposer Lug and the Release Lever Lug.
The
Keylever Pawl should clear the interposer by
.020" - .030
11
.
The backstop should be adjusted so that the keylever
pawl operates freely (.035
11
bite).
The latch to bai I clearance shou Id be:
a.
.003
11
- .015"
Space/Backsp'Jce.
b.
.003" - .010"
Carrier Return/Index.
c. . 003
11
- .015
11
Tab or WordmlJrk.
The lockout shaft may flip over if the lockout shaft
link is a I lowed to move to the left I::>r right. A cJip,
PN 1138464, may be installed on the lockout bail to
limit any movement.
The pawl mounting stud should clear the Escapement
Torque
Bar by .00111 at the closest point.
The Torque Bar should clear the Release Lug by .002"
- .010". Later models use high side of spec.
The Esc':lpement Li nk shou Id span the gap between the
Escapement Cam Follower Arm and the Spacebar Trig-
ger Lever.
5·3
Pawl Mounting Stud Loose or Mal-Ad!usted 2.5 I
Torque Bar To Pawl Lug Clearance 2.6
Trigger Adjustment 2.8
2.8 The trigger shou Id disengage from the Torque Bar
when the pawls are .010" - .015" from the rack.
2.9 Escapement should occur after printing and after the
typehead has moved away from the platen by 1/4
11
to
1/2
11
•
2.10 Escapement Shaft binds may be relieved by tapping
the bearings on the Escapement Shaft to improve the
bearing alignment.
2.11
The Mainspring tension should be 1/2 to 3/4 Lbs. at
R.H. margin. See 2.18.
2.12 Position the escapement cam left or right to leave
.020 II - .030" latera I motion in the Lockout Cam
when it is on the high point of the Escapement Cam .
Adjust the Lockout Cam to allow .020
11
- .030
11
front
to rear moti on in the I nterposer when the Lockout Cam
is
engaged. Adjust the Interposer Guide Bracket for
.015
11
- .025
11
clearance between the Interposer and
Lockout when the Lockout is at rest. (Note: For
the late level Interlock - see Reference Manual.)
2.13 The Spacebar Interposer spring should be in the middle
hole of the Interposer. See 2.17.
2.14 S.H. INTERMITTENT FAILURE TO SPACE
Intermittent space fai lures can be caused by excessive
cycle clutch overthrow or incorrect print escapement
cam timing.