7. Pullout the end
of
the oil wick,leadingout fromstud Y2, from the oil tube K3shownin Fig.25.
8.
While
holding back the needle thread take-up link inside the head at Z2, Fig. 21, pull upon the head
of
stud Y2,
taking care
not
to pull loose its wick, until the stud is removed.
9. Back the end
of
the take-up A3, Fig. 21 toward the inside
of
the machine, turning the machine pulley as re
quired until the take-up is free
of
the
slot provided for
it.
10. The needle thread take-up link assembly (including parts B3, Z2, A3, C3, D3 and E3) can now be pulled free of
the
needle
bar
crank.
To replace the needle thread take-up:
1. Make sure that the wearing plate C3 is in place and undamaged on the face
of
the needle bar crank, as shown in
Fig.
21.
2. Bace the needle thread take-up link Z2 and take-up A3in the head
of
the machineso that the stud E3, Fig.21
in the center
of
the linkageslipsinto the hole providedfor it in the needlebar crank, asshownin Fig.21.
3. Slip the upper end
of
the
take-up A3 through the slot provided for it in the head
of
the machine.
4. Insert stud Y2 and its oil wick through needle thread take-up lever link Z2 and into its hole in the machine
casting so
that
the flat on the stud faces the rear
of
machine. DO NOT INSERT THE STUD TO ITS FULL
DEPTH AT THIS TIME.
"There
should be about .25
to
.38mm side play
of
the take-up lever link Z2 on the stud,
until final adjustment is made in Step 17.
5. Remove arm plug screw
J3,
and with the tip
of
a screwdriver, push the end
of
oil wick leading from stud Y2
into oil tube K3 so that wickis slack overedge of tube at point L3 to insure free
passage
of oil (Fig.25).
6. Replace oil wick holder as instructed in items 3 and 4 under "TO INSTALL
NEW
OIL
WICK
HOLDER", pages
17 and 18. Replace arm plug screw
J3.
7. Turn the set screw W2 inward lightly against the flat on the stud Y2. DO NOTTIGHTENscrewW2until final
adjustment is made in Step 17.
8. Turn machine pulley as required to make set screw T2 in needle bar crank accessible through hole at S2, Fig. 22
in
rear
of
machine
head.
9. Insert a screwdriver through this hole and, while turning stud E3 by hand to find its flat, turn set screw T2 until
it bears tightly upon the flat.
10. Turn screw T2 back, just enough to "break it loose".
11. Test for side play by pushing take-up lever A3 gently right and left; there should be .025 to .05mm side shake
between lever and wearing plate.
12. Movethread take-up crank inward or outward in needle bar crank, as required, to obtain clearance.
13. Using wrench 545945, through same hole and turning machine pulley as required, tighten hexagon head screw
U2 lightly.
14.
Loosen
set
screw
T2.
15. Securely tighten clamping screw U2.
15