Teletype 28 Manual page 85

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ISS 8, SECTION 573-115-700TC
3. 08 Horizontal Tabulator Mechanism (Cont.)
BLOCKING LEVER
(FRONT VIEW)
SPACING SHAFT
CLUTCH DISK - - - - -
STOP LUG
REAR SURFACE OF
SPACING SHAFT GEAR
(BOTTOM VIEW)
MOUNTING SCREWS
TABULATOR PAWL- HORIZONTAL (FINAL)
TO
CHECK
(1) DISENGAGE ALL CLUTCHES SO THAT FRONT
SPACING FEED PAWL IS IN LOWER POSITION (AS
SHOWN IN PAR. 3.06). POSITION SPACING DRUM
SO THAT REFERENCE TABULATOR STOP
1
AS
DETERMINED IN PRELIMINARY TABULATOR PAWL ADJUST-
MENT (PAR. 3.06)
1
IS IMMEDIATELY TO LEFT OF PAWL.
OPERATING LEVER SLIDE ARM SHOULD BE FORWARD
IN UNBLOCKED POSITION. DISENGAGE FEED PAWLS
AND ALLOW DRUM TO ROTATE ONE SPACE COUNTER-
CLOCKWISE. BOTH FEED PAWLS SHOULD BE FULLY
ENGAGED. MOVE EXTENSION LINK TO REAR TO
BLOCKED POSITION.
(2) TRIP SPACING CLUTCH STOP LEVER AND SLOWLY
ROTATE MAIN SHAFT UNTIL BLOCKING LEVER IS JUST
TRIPPED. TAKE UP PLAY IN SPACING SHAFT TOWARD
REAR.
REQUIREMENT
SOME PORTION OF CLUTCH DISC STOP LUG SHOULD
BE ALIGNED WITH REAR SURFACE OF SPACING
SHAFT GEAR.
TO ADJUST
REPEAT PROCEDURE SET FORTH IN PARAGRAPH (1)
ABOVE. TRIP SPACING CLUTCH AND ROTATE SHAFT
UNTIL MIDDLE OF STOP LUG IS IN LINE WITH
REAR SURFACE OF GEAR. IF BLOCKING LEVER
TRIPPED TOO SOON
1
WITH LEFT MOUNTING. SCREW
LOOSENED_, POSITION PAWL ADJUSTING PLATE TO
LEFT UNTIL EXTENSION LINK CAN BE BLOCKED.
SLOWLY MOVE PLATE TO RIGHT UNTIL BLOCKING
LEVER JUST TRIPS. WHEN ADJUSTING TRIP-OFF POINT
1
CARE SHOULD BE TAKEN THAT BLOCKING LEVER IS
CAMMED DOWN BY STOP AND NOT MANUALLY MOVED
OUT OF BLOCKED POSITION. RECHECK REQUIREMENT.
NOTE:
AFTER OBTAINING TRIP-OFF POINT
1
CONTINUE
ROTATING MAIN SHAFT UNTIL SPACING CLUTCH IS
DISENGAGED. PAWL SHOULD BE TO RIGHT OF STOP.
WHEN EXTENSION LINK IS MOVED TO REAR, BLOCKING
_LEVER SHOULD MOVE TO BLOCKED POSITION. IF TIP OF
PAWL SHOULD REST ON END OF STOP, READJUST
PLATE TO RIGHT SO THAT CLEARANCE BETWEEN
PAWL AND STOP IS:
MIN. 0.0031NCH ---MAX. 0.008 INCH-----..J
TIGHTEN SCREW.
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