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9.
Clutch Unlatching - With either style margin rack held
to its extreme left position, the carrier return latch keep-
er should clear the latch by .005 11 to .015 11 at the un-
latching point (Fig. 148). Check by manually holding
the latch at the unlatching point while the machine is
idling. Lengthen or shorten the carrier return unlatching
link to obtain this clearance.
Margin Rack
Held To The
Left
---....
Latch He Id Even
With The Keeper
Corner
FIGURE 148.
Clutch Unlatching Adjustment
NOTE:
Should the clutch fail to properly latch (on
machines equipped with the early margin rack) after
the clutch unlatching adjustment has been completed/
check the margin rack eccentric adjustment which is lo-
cated in the Margin Control section. The eccentric may
be holding the rack too far to the left restricting the
margin rack motion thereby reducing the amount of bite
that the latch may take on the keeper.
10 • Torque Li miter - The torque lim iter shou Id transmit 1 to
2 pounds pull on the carrier as the carrier is unlatching
the clutch at the left margin.
If a spri ng sca lei s ava i lab I e / the adj ustment may be
checked by holding against the carrier with the push end
of the scale and allowing the carrier to slowly unlatch
the clutch at the left margin.
If no sca Ie is available / the torque may be estimated by
holding the carrier while the clutch is engaged. The
torque limiter should slip readi Iy yet return the carrier
positively without any hesitation when the carrier is re-
leased.
The adj ustment is made by adj usti ng the eccentri c stud
in the torque limiter hub. If sufficient adjustment is not
available at the eccentric, the torque limiter sprint may
be shifted on the torque limiter hub by positioning the
torque I imiter spring clamp.
NOTE:
The carrier return clutch arbor should have an
end play of .004 11 to .006 11 between the torque limiter
hub and the C-clip on the operational shaft. Adjust the
play by positioning the torque limiter hub iaterally on
the shaft. The end play can be adjusted easily if the
torque limiter spring is moved to the right
T
off the torque
limiter hub.
2-45
11. Carrier Return Interlock Contact -
a.
Form the N/C support so that the O/P lifts the N/C
contact .00211 to .005" (Fig. 149).
b.
Form the N/O support so that the O/p clears the
N/O contact .035" to .045" (Fig. 149).
FIGURE 149.
Carrier Return Interlock Inactive
c.
With the carrier return clutch latched, position the
mounting bracket so that the N/O contact rises
.010 11 to .020" from the N/O support (Fig. 150).
NOTE:
The N/O contacts must remain closed during
return of the carrier to the left margin.
Excessive rise on the contact straps wi II cause the con-
tacts to bounce.
Mtg. Bracket
o
N/O Support
Carri er Return Interlock Active
INDEX MECHANISM
1.
All operational control adjustments must be correct be-
fore any attempt is made to adjust the index mechanism.
2.
Multiplying Lever Stop (Fig. 151) - Adjust the multiply-
ing lever stop front or rear to produce
~360
II
to .375"
(approximately 3/8") motion to the index link when the
carrier return/index cam is operated to its high point
(platen removed).
NOTE:
This adjustment may be measured with the
Hooverometer and a feeler gauge. The handle of the
Hooverometer is .375" wide.
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