Singer class 251 - Hook Assembly Adjustment Procedures; Hook Shaft Bushing and Hook Assembly; Loosening Hook Shaft Bevel Gear

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
HOOK
HUB K
3
~
X
26
Fig. 35. Hub of Hook
Firmly Against
Oil
Retaining Collar
Before adjusting the side-
wise
position of the sewing
hook, make certain that hook
has been correctly placed on
the hook shaft; the hub of the
hook firmly against the hook
shaft retaining collar K3, as
shown in Fig. 35. See also in-
structions on page 23, under
"TO TIME THE SEWING
HOOK."
To set the hook sidewise in relation to the needle:
Remove bobbin case, as instructed on page 10.
Loosen hook shaft bushing set screw Z3, Fig. 36.
/r
REMOVE
BOBBIN
CASE
r'}r----------
' I I
I I I (])
:l! 1 J
HOOK
SHAFT
I
J~~- -- i,-- -- --~
BUSHING
cs
K3
Fig. 36. Hook Shaft Bushing and Hook Assembly
f
I
•
-~:J
HOOK
SHAFT
II I
27
S4
Jlj
KEEP GEARS
IN MESH
L2
Fig. 37. Loosening Hook Shaft Bevel Gear
Loosen the two set screws #1 and #2, on the hook shaft bevel gear
S4, Fig. 37, just enough to loosen the gear on the hook shaft.
CAUTION: MAKE CERTAIN THAT THE TWO BEVEL GEARS L2 AND S4
ARE KEPT IN MESH UNTIL SET SCREWS #1 AND #2 ARE SECURELY
RETIGHTENED.
Using a light mallet and
a 1/4 inch brass drift pin,
as instructed in Figs. 38 to
40, move the hook assem-
bly, toward or away from
the needle, as required.
TAP VERY LIGHTLY on drift
pin to avoid injury to hook
assembly.
~DO NOT
i\ X HIT BRIDGE
\PLACE BRASS DRIFT PIN
HERE
Fig. 38. Where to Place
Drift Pin to Move Hook Assembly
Away from Needle