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Basic
Maintenance for Class SP100/MOC3900 Machines
A very small cylinder,
compatibility with almost any thread, large sewing capacity and high speed
make the Union Special Class SP100 sewing machines extremely productive
straight-needle, overedge machines.
The small cylinder makes these machines ideal for small circular
operations on infants' and children's clothing. Its sewing capacity of up
to 9/32" (7mm) makes it capable of handling many types and weights of
garments, even the heavy
weight fleece.
Its speed, up to 8,500 SPM,
depending on the application, makes it very productive. And an optional
flat cloth plate lets you turn your machine into a "flat" overedger to
perform an even broader range of operations.
The routine maintenance of these machines, as well as any machine, is
important to maintain the performance, dependability and quality. This
maintenance should be performed at least twice
yearly or every 2,000 operating hours.
-
Drain the old oil from the
machine. To do this, remove the plug screw,
Figure 1, located on
the right end of the machine, below and in front of the handwheel. Tip
the machine slightly so that all of the oil drains out.
- Remove the oil pan from the machine. To
do this, remove the four nuts located in the comers of the oil pan,
Figure 2.
- Check the oil pan gasket,
Figure 3, to
insure that it is not cracked, pinched or deteriorating, and replace if
necessary. Also use a clean rag to remove excess oil and any
contaminants that may be found in the pan area. Replace the oil pan.
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