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Changing The Looper Drive Belt (50342CH) Reassembly
- Slide the new looper drive belt through the opening between the
lower main shafts.
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Within the feed chamber insert a .005" (.127mm)
between each feed lift eccentric and the feedbar assembly slide block.
- Insure the flats on the lower main shafts align with each other.
Then return the main shaft coupling to its original position. Gently
thrust the lower left main shaft to the left with the shims shown in
step 2 still in place. Secure the first screws in operating direction on
the flats on the lower main shafts. The shims will insure the lower left
main shaft has been returned to it’s original position. Then remove the
shims and secure the other two screws.
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Place the looper driven sprocket as far to the left
as it will go on the looper drive assembly. Secure the two screws in the
driven sprocket.
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Place the looper drive belt onto the looper drive
sprocket. Then slide the belt onto the looper driven sprocket. It is
very important that this is done with as little belt tension as possible
set in the looper drive module (as explained in step 2 on disassembly).
If the belt is forced on, the integrity of the belt will be damaged and
the life of the belt will be greatly shortened.
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Secure the first screw in operating direction in the
looper drive sprocket to the flat on the lower left main shaft.
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