Since 1858
technical Support
1-800-327-9420
8
R
andall
UnIOn
l
Ock
-S
tItch
Adjustments
The following adjustments and explanation of reasons for making them
are to simplify the servicing of the UNION Lock-Stitch machine
• The successful operation of UNION machines can only be assured if proper maintenance and genuine RANDALL parts are used.
rAnDAll leATher MAchInerY is not responsible for machines or parts that are damaged due to excessive speed, improper
installation, unauthorized modifications, improper adjustment, poor maintenance, or use of improvised or generic parts.
• We wish to caution the operator not to strain the small screws and nuts. Use good judgment in handling them and they will not break
• At such a time as a change is made in a individual adjustment or there is a replacement of a part on the machine, a careful check
should be made of all adjustments and settings that may be directly or indirectly affected to insure that no change has taken place in the
assemblage.
• When making a replacement of a part in an outstanding machine, make certain that the correct component parts are being used.
• Consult the catalog for the proper presser foot and throat plate to use. There are many of various types of attachments, with each
serving a special purpose in respect to the different types of materials and the many kinds of work, which these machines are active in
sewing.
• RANDALL LEATHER MACHINERY reserves the right to make changes or improvements at any time, without thereby incurring any
obligation either to install the same on machinery or equipment previously sold or install the old part which has been changed, improved
or omitted in new machines or equipment subsequently sold. Prices and equipment subject to change without notice.
Inspection of Common Adjustments
Allowing that a machine is in good condition from a standpoint of wear and lost motion,
a quick check-up of the essential settings can be made in the following order:
•
check the hole for the needle in needle bar. remove all dirt.
•
check for perfect alignment of awl with needle.
•
Make sure that all screws remain tight.
•
keep the machine well oiled, (except in foot lift area).
•
The wax pot should be approximatly half full of wax.
•
Before making any adjustments, make sure that the needle and awl are not bent.
• The best way to test is to roll the needle and awl on a smooth flat surface and see that it rolls true.
7. Tension on shuttle thread must not be too strong. Make sure there is no gap between the inside bobbin cover and the
shuttle.
11. when assembling the parts, make sure each piece that you put together is free without any play or binding.
12. All lower rocker shafts should be free without any side wise movement or binding.
oiling & Cleaning
oiling:
• The successful and economical operation of all machinery depends on thorough cleaning and oiling. The operator will
save much trouble as well as money by systematic careful attention to the machine in these respects. It is recommended
that the machine be cleaned oiled daily. oiling the machine not only lubricates, for smoother operation, but it also cleans it
from dirt and contaminates that can shorten the lifespan of the machine.
•
NEVER USE GREASE,
on any mechanism. Grease will collect dirt and contaminants that will grind and damage parts.
•
DO NOT OIL THE FOOT LIFTING MECHANISM
(parts Ul-120 to Ul-127). oiling in this area will cause the presser-foot
not to lift and will result in inadequate feeding.
Cleaning:
It is advisable to keep the machine clean to prevent the build up of dirt and wax. This build up can damage mechanisms and
stain the products being sewn. regularly clean the shuttle mechanism, arch covers, and thread path. If the machine uses
hard wax, regular cleaning is critical.
