Teletype 28 Manual page 134

SECTION 573·115·700TC
4. 10 Positioning Mechaniqm
NOTE
1:
THESE ADJUSTMENTS APPLY ONLY TO HORIZONTAL POSITIONING DRIVE MECHANISMS
WITH EARLIER DESIGN DRIVE LINKAGE
AND
TENSION SPRINGS.
NOTE 2: THE LOOPS OF THIS SPRING ARE OFF-SET FROM CENTER IN THE SAME DIRECTION.
THE SPRING MUST BE HOOKED ON ITS ANCHORS SO THAT THE SIDE OF THE SPRING'ON WHICH
THE LOOPS ARE LOCATED, IS TOWARD THE REAR OF THE MACHINE. WHEN REMOVING EITHER
SPRING EXERCISE CARE TO AVOID KINKS IN LOOPS.
HORIZONTAL POSITIONING DRIVE LINKAGE SPRING
REQUIREMENT
SPRING UNHOOKED FROM ITS POST.
LINKAGE IN ITS UNBUCKLED POSITION.
MIN. 14 OZS.---MAX. 18 OZS.
TO PULL SPRING TO INSTALLED LENGTH.
DRIVE LINKAGE HUB
HORIZONTAL POSITIONING DRIVE LINKAGE
REQUIREMENT
DECELERATING SLIDE
(FRONT VIEW)
ZONTAL POSITIONING DRIVE
LINKAGE- VERTICAL LINK
TYPE BOX CLUTCH DISENGAGED. CODE BARS 4AND 5 fO SPACING (RIGHT).
CLEARANCE BETWEEN EACH SIDE OF CENTER HORIZONTAL STOP SLIDE AND DECELERATING SLIDES
ON SIDE WHERE KNEE LINK IS STRAIGHT, SHOULD BE EQUAL (WITHIN 0.005 INCH)
MIN. 0.015 INCH---MAX 0.040 INCH
TO ADJUST
LOOSEN BEARING STUD MOUNTING SCREWS AND CONNECTING STRIP MOUNTING SCREWS
FRICTION TIGHT. POSITION ONE OR BOTH BEARING STUDS ON THE CONNECTING STRIP
TO PROVIDE 0.025 INCH TO 0.035 INCH BETWEEN THE CENTER HORIZONTAL SLIDE AND
THE DECELERATING SLIDE ON THE SIDE WHERE THE LINKAGE IS NOT BUCKLED. TIGHTEN
THE TWO INNER MOUNTING SCREWS. CHANGE POSITION OF REVERSING SLIDE AND CHECK
OPPOSITE CLEARANCE. EQUALIZE BY SHIFTING BOTH STUDS AND CONNECTING STRIP
AS A UNIT. HOLD THE DRIVE LINKAGE HUB AGAINST THE LOWER VERTICAL
~INK
OF THE
DRIVE LINKAGE. TIGHTEN THE TWO OUTER BEARING STUD MOUNTING SCREWS. CHECK
THE LINKAGE FOR FREENESS THROUGHOUT A COMPLETE CYCLE. THE TYPE BOX CLUTCH
DISK SHOULD HAVE SOME MOVEMENT IN THE NORMAL DIRECTION OF ROTATION IN
THE STOP POSITION
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