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FIG. 8
TORQUE:
19 - 21 in. lbs.
(2.1 - 2.4 Nm)
B
1/16" (1.6mm)
A
FIG. 9
A
Plain Feed
FIG. 10
C
B
A
Differential Feed
FIG. 10A
SETTING THE LOOPER AVOID PLAIN FEED
If more or less looper avoid motion is required, remove cylinder
side cover (A, fig 8) located at the lower front left side. For Plain
feed use a screwdriver to loosen looper avoid link ball joint (B,
fig 8) (for differential feed use TT-5 wrench to loosen looper avoid
link screw C, fig 8). Moving ball joint down in the lever slot
increases the amount of looper avoid motion, moving it up acts
the reverse. Retighten ball joint B, Plain feed (screw C, differen-
tial feed) securely.
NOTE: Whenever looper avoid is changed looper clearance to
needle must also be reset.
The height of the needle bar is correct when the top of the
needle eye is 1/16" (1.6mm) below the underside of the looper,
with the looper point even with the right side of the needle. To
make adjustment loosen screw (A, Fig. 9) and move needle bar
(B) as required to attain dimension.
NOTE: Care must be taken not to disturb the alignment of the
needles when moving the needle bar either up or down.
SETTING THE FEED DOGS FOR PLAIN FEED
Assemble the main feed dog and throat plate. Main feed dog
(A, Fig. 11) at its highest position, should be set to project above
the throat plate, slightly more than the depth of its teeth for Style
35800BQW and slightly more than the depth of its lower teeth for
Styles 35800BRW, BRWL. The feed dog mounting screw (B) and
front support screw (C) should be set to maintain this setting.
The feed should be set so there is equal clearance between the
B
front of the feed dog and the front of the feed slot in the throat
plate when the feed dog is at its most forward travel. The same
C
amount of clearance should be between the back of the feed
dog and the back of the feed slot in the throat plate when the
feed dog is at its most rearward travel. To attain this setting
loosen screws (A and B, Fig. 10) and remove plug screw (D). Using
a screw driver turn eccentric pin (C) clockwise or counterclock-
D
wise to obtain proper setting. Tighten screws (A and B), reinstall
plug screw (D).
SETTING THE FEED DOGS FOR DIFFERENTIAL FEED
Before assembling the main and differential feed dogs, set the
feed bar eccentric pin (A, Fig. 10A) located in the left side near
center of cylinder, so that the slot in the head is in a horizontal
D
position for the 35800BWDN, BLW style machines and turned
counter clockwise to an approximate 45° for the 35800BWW style
of machine. The pin can be used to slightly tilt both feed dogs if
necessary. The feed bar pin is retained in position by set screw
(B). Assemble differential feed dog (A, Fig. 11A), main feed dog
(B) and throat plate. Both the main and differential feed dogs
E
can be individually adjusted to height. Main feed dog (B) at its
highest position, should be set to project above the throat plate,
the depth of its teeth. If adjustment is necessary loosen screw (D)
and move feed dog (B) up or down to attain correct setting.
Feed dog support (C) should support front of feed dog.
NOTE: If eccentric pin (A, Fig. 10A) is used to tilt the feed dogs,
make sure that the looper does not interfere with the rear
needle guard and that the needle guard does not pinch
the needle loops on the back side of the needles.
12
SETTING HEIGHT OF NEEDLE BAR
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