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Basic Preventative Maintenance For Class 31100 Machines
Union Special Corporation's
Class 31100 high-speed, feed-up-the-arm coverseaming machines handle the
second part of the two-part covered seam operation on knitted garments.
These machines feature fully-automatic lubrication, lightweight parts, and
needle
bearings to assure dependability. The Class 31100 machines produce stitch
and seam type 406 SSh-2 and have a stitch range of 8 to 16 SPI.
Routine maintenance of this machine, as
well as any machine, is always important to maintaining performance,
dependability and quality. This maintenance should be performed at least
twice a year or every 2000 operating hours.
- Drain the old oil from the reservoir. To
do this, remove the plug screw located below the looper thread take up
housing, Figure 1, and tip the
machine slightly so that all of the old oil will drain.
- Remove the rear chamber cover and, using
a rag, remove excess oil and other contaminants that could be in the oil
reservoir chamber, Figure 2.
Also, check for any shake or binds that may be in any of the parts and
repair or replace as needed. Replace the cover after this area has been
cleaned.
- Remove the cylinder cover and, using a
rag, remove any contaminants that may be in this area. Also, check for
shake or binds and repair or replace as needed,
Figure 3. Replace the cover after this area has been
cleaned.
- Remove the presser foot and throat plate
and remove any lint that may have accumulated in this area,
Figure 4. This can be done using a
small brush, a rag or compressed air. Also, check for wear on the
presser foot, throat plate, feed dogs, looper and needle guard and
repair or replace as needed. When this area has been thoroughly cleaned
and the parts checked, replace the throat plate and presser foot.
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