|
Basic Preventative Maintenance For Class 51100 Machines
Union Special Corporation's Class 51000
machines are high throw, single-needle, multi-thread chainstitch flatbed
machines. The Style 51100 R machine includes a top and bottom feeding
system for powerful, accurate seaming of multi-wall paper bags made of
heavy to extra heavy weight material. This machine is also equipped to sew
a filter cord
onto the bag with the special standard presser foot. Style 51100 R
machines sew at speeds up to 3800 stitches per
minute at a stitch range of from 3 1/2 to 7 stitches per inch.
Routine maintenance of the Style 51100 R, and
any machines, is important and should be performed at least every 6 months
or 2000 operating hours.
-
Drain the old oil from the machine. To do
this, remove the plug screw below and to the front of the handwheel of the
machine, Figure 1. Tip the machine
carefully until all of the oil is drained.
-
Remove the cloth plate and use a small brush,
rag or compressed air to carefully clean the lint, dirt and other debris
from this area, Figure 2. If lint and
dirt are not removed at regular intervals, excessive heat, binding or wear
could occur.
-
Remove the oil reservoir back cover, crank
chamber cover and oil reservoir top cover. Using a clean rag, carefully
wipe away the excess oil and other contaminants that could be in the oil
reservoir chambers, Figure 3. Also
inspect the gaskets for cracks, tears or dry rot and replace as needed.
-
Check for left to right shake in the
crankshaft and remove any excess shake. As a reminder, the machine should
turn smoothly without binds, but should also have no left to right shake,
Figure 4. Also check for left to right
shake in the feed rocker and upper feed mechanisms and remove any excess
shake, Figure 5.
|
 |