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G] NEEDLE BAR AND NEEDLE THREAD TAKE-UP
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Remove the two screws O- and remove the needle bar frame stop O.
Remove screw O, and remove the felt O and felt bracket O'
Loosen screw O. and remove the needle bar frame driving shaft O-
Remove the needle bar frame assembly O-
(The needle bar O- needle bar clamp
and needle bar frame slide block
will come out.
Loosen screw ® and remove the thread take-up pin
(The wick will come out with the thread take-up pin ®.)
Remove the thread take-up ©.
Remove the thread take-up slide ©, and remove the needle bar crank rod
m
FEED ASSEMBLY
m
Remove the two screws O. and remove the feed dog O-
Remove stop screw O and the washer, and remove the bobbin case opener O.
Tilt the machine.
Loosen the three screws O in the pinion gear O. and remove the rotary hook O
• The pinion gear O and opener link O will also come out.
Loosen screw
and remove the feed bar lifting fork ®.
Loosen thefeed driving arm ® screw ®. needle barvibrating crank ©screw
.and setcollar © screw © Remove the
feed driving shaft ©.
Loosen the feed driving arm ® screw
needle bar vibrating crank ©screw ©. and setcollar © screw
Remove the
feed driving shaft ©.
• The two set collars © will come off.
(Removal will be simplified if the feed driving arm © and needle bar vibrating crank © are opened with a wedge.)
• On model B838. move the rotary hook base to remove the feed driving shaft ©.
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