Lewis 17 - Page 19

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TIMING NEEDLE WITH PLUNGER
53. Loosen both screws L and M, Figure L, w'hich hold the
main shaft head driving gear N in position. Remove gear N. Turn
handwheel away from you slowly until
the plunger is at its highest point, at a
full stop. The groove in main shaft
14-324 should now be on top. Turn
needle crank 1001 in the direction of
the arrow stamped on it, until the
needle is at its highest point and is
again returning towards the plunger.
When the point of the needle is 1/4
of an inch ( 6mm) from the plunger,
replace gear N on the shaft .so that
spot screw L will enter the groove in
the shaft without disturbing previous
adjustments. Be sure to see that the
spot screw L is in line with the groove
on the shaft before tightening this
screw.-
Figure L
17
54. To test this adjustment, turn hand wheel slowly away from
you and note if plunger is raised to its highest point and comes to a
full stop as the point of the needle is l/4 of an inch away from the
plunger, about to enter the goods.
55. We call to your attention that the plunger must not move
while the needle enters the goods. After the needle has made the
penetration and the hook has picked up the thread loop from the needle,
you will note that the plunger again recedes in order to release the
goods, thereby permitting the feed to carry the goods forward, ready
for the next stitch.
REMOVING PLUNGER
56. Loos en both nuts. 1311, Figure M, and the plunger releases
of its own accord and may be removed by raising it up through the
opening i!l the presser foot.
57. To ;insert new plunger, place same in the plunger barrel
with the groove in the plunger to the front. The groove in the plunger
slides on the notch op the inside of the plunger barrel, thereby keeping
the plunger from turning.