Singer 251-2 - Page 37

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
37
TO INSTALL NEW OIL WICK HOLDER
WICK
NOT REACHING
-{:,
ZY
Etl..51.54
£2SJ.56
Fig. 56. Replacing Oil Wick Holder
(Correct Installation)
Fig. 57. Incorrect
Installation
Fig. 58. !~correct
Installation
1. Remove old oil wick holder as instructed at bot-
tom of page 36.
2. Remove top arm plug Y3, Fig. 56. (Use a sharp-
bladed screwdriver or a small chisel to pry plug
Y3 from arm casting.)
3. Insert two oil wick leaders into arm casting, as
shown in Fig. 56, so that wick is slack over edge
of casting at point A4, Fig. 56. This will insure
free passage of oil. Use tweezers through the
plug hole at Y3 to loop the wick and bring it
into positive contact
with the arm shaft approxi-
mately at the point B4 shown in Fig. 56.
NOTE: DO NOT FORCE the wick leaders down too
tightly
against the edge A4 of the casting, as shown
in Fig. 57, as this will decrease the flow of oil from
the arm shaft to the needle bar link and take-up
bearings.
CAUTION: If the bottom of either oil wick leader is
caught on the ledge as shown at C4, Fig. 58, no oil
can be taken up by the wick to be carried to the
needle bar link and thread take-up bearing, where
it is needed. Make sure that the oil wick leaders are
pushed all the way down into the smaller hole,
without jamming, until they touch the arm shaft, as
shown in Fig. 56.
4. When oil wick leaders are correctly installed, re-
place holder screw W3, Fig. 56.
5. Adjust the three oil wick loops in holder (see
Figs. 55 and 56), so that two of the loops come
as close as possible to,
without touching, the
two sets of needle bearings F3 while the third
wick loop
makes positive contact with the wick
inside the stud C3,
in the needle bar link, os
shown in Fig. 55.
6. Securely tighten holder screw W3.
7. Replace arm top plug Y3.
8. Replace upper section of presser bar, upper
needle bar bushing and needle bar, as instructed
on page 33.
9. Replace face plate, as instructed 1n last para-
graph on page 18.