Line Feed And Platen Mechanism; Right Margin (Sprocket Feed) - Teletype 28 Manual

2. 71 Line Feed and Platen Mechanism (Con't)
(A) LEFT MARGIN
REQUIREMENT
ISS 8, SECTION 573-115-700TC
r----<1) TYPE BOX CLUTCH DISENGAGED,
LETTERS PRINT INDICATOR
(TOP VIEW)
(B) PRINTING HAMMER STOP BRACKET
{l)FOR UNITS WITH THICK TYPEBOX AND
·DUMMY TYPE PALLETS USE CORRESPONDING
STANDARD ADJUSTMENT EXCEPT. ClEARANCE
BETWEEN PRINTING HAMMER AND DUMMY
TYPE PALLET SHOULD BE
MIN. SOME--- MAX. 0.020 INCH
(2)FOR UNITS WITH THIN TYPEBOX- NO
DUMMY TYPE PALLETS, USE CORRESPOND-
ING STANDARD ADJUSTMENT.
(3)CERlAIN MULTIPLE FORM UNITS Will
REQUIRE A REFINEMENT OF STANDARD
ADJUSTMENT FOR THE STOP BRACKET TO
MIN. 0.005 INCH ---MAX. 0.0151NCH
(C) RIGHT MARGIN
(1)
FOR UNITS WITH LIMITED ADJUST-
MENT SPACING DRUM, USE CORRES-
PONDING STANDARD ADJUSTMENT.
(2) FOR UNITS WITH UNIVERSAL SPACING
DRUM, USE CORRESPONDING STANDARD
ADJUSTMENT.
SPACING DRUM FULLY RETURNED, AND
TYPE BOX SHIFTED TO LETIERS POSITION:
CLEARANCE BETWEEN CENTER OF LETTERS
PRINT INDICATOR ON TYPE BOX AND
CENTER LINE OF SPROCKET PINS AT LEFT
HUB SHOULD BE:
MIN. 5/16 INCH--- MAX. 7/16 INCH
TO ADJUST--- POSITION CARRIAGE RETURN
RING WITH ITS MOUNTING SCREWS
LOOSENED.
2) SPACING CLUTCH DISENGAGED, FRONT
SPACING FEED PAWL IN ITS FARTHEST
ADVANCED POSITION, SPACING DRUM
FULLY RETURNED, AND PLAY IN
SPACING GEAR (PAR. 2.24) TAKEN
UP-cLOCKWISE: CLEARANCE BETWEEN
PAWL AND SHOULDER OF RATCHET WHEEL
TOOTH IMMEDIATELY AHEAD:
MIN. SOME ---MAX. 0.008 INCH
(3) THE REAR PAWL WHEN FARTHEST ADVANCED
SHOULD DROP INTO THE INDENTATION
BETWEEN RATCHET WHEEL TEETH AND SHOULD
BOTTOM FIRMLY IN NOTCH.
TO ADJUST ---REFINE REQUIREMENT (1) ABOVE
SPACING DRUM RATCHET WHEEL
CARRIAGE RETURN RING
(D) PRINTING CARRIAGE POSITION
USE PAR. 2.47
(E) TYPE BOX ALIGNMENT
USE PAR. 2.51
FOLLOWING THIS ADJUSTMENT, All
SCREWS SHOULD BE TIGHTENED.
(FRONT VIEW)
UNIVERSAL
SPACING
DRUM
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