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- Randall
- Sewing Machine
- UNION Lockstitch
- Instruction Manual
Randall UNION Lockstitch Instruction Manual
Summary of UNION Lockstitch
Page 1
Instruction manual for the union n eedle and a wl - l ock -s titch - s ewing m achine s erial n umber : _______________ manufactured by: randall leather machinery company 401 irvine street ~ yoakum, texas 77995 usa 1-800-327-9420 or 1-361-293-7015 www.Campbell-randall.Com.
Page 2: 1-800-327-9420
Catalog table of contents general information description....................................................................................................................... 1 charactersistcs.............................................................................................................
Page 3: General Information
Since 1858 since 1858 www.Campbell-randall.Com 1 r andall union lock - stitch general information description the union lock-stitch sewing machine is a straight needle and awl sewing machine for stitching heavy materials. Characteristics • feed: needle feed, jump foot. • speed: the maximum speed rec...
Page 4: Installation
R andall union l ock -s titch installation r andall union l ock -s titch since 1858 technical support 1-800-327-9420 2 machine installation please insepect the packaging for any loose parts before discarding. Motor table • remove table from pallet and place in location machine head • remove head fro...
Page 5: Installation
R andall union l ock -s titch installation since 1858 since 1858 www.Campbell-randall.Com 3 wax pot • place the wax pot over the stuf on the back of the machine • pivot the wax pot up to the the machine casting and lock in place with the clamping nut. Presser foot spring • place the upper bracket an...
Page 6: Thread / Needles & Awls
R andall union l ock -s titch thread / needles & awls r andall union l ock -s titch since 1858 technical support 1-800-327-9420 4 s etting t he n eedle 1) make sure that the needle is put into the nee- dle bar (ul-210) as deeply as possible, then tighten the needle bar screws in place. 2) insure tha...
Page 7: Threading
R andall union l ock -s titch threading since 1858 since 1858 www.Campbell-randall.Com 5 6 threading the wax pot 1. Mount your thread on the spool holder, with the side up as indicated on the spool. 2. On the top of the wax pot, bring the thread through the extended wire first and then through the s...
Page 8: 1-800-327-9420
Since 1858 technical support 1-800-327-9420 6 r andall union l ock -s titch wax / bobbin r andall union l ock -s titch winding the bobbin • for natural threads, leave the label up on the spool of thread • put the thread through the extended wire of the bobbin winder and then through the small wire h...
Page 9: Sewing
Since 1858 since 1858 www.Campbell-randall.Com 7 r andall union l ock -s titch sewing t o c ommence s ewing note: read this manual thoroughly before sewing on the union for the first time! To prepare for sewing: • grip the top thread behind the presser foot with the left hand • slowly turn the balan...
Page 10: 1-800-327-9420
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 maint...
Page 11: Ul-15
Adjusting the foot presser • enough pressure must be used to hold the work firmly in the needle plate. Light work will not require as much pressure as heavy work. Too much pressure will cause the presser-foot to mark you material. If the pressure is too light, the work will move and irregular stitch...
Page 12: Thread Lock / Tension
R andall union l ock -s titch thread lock / tension since 1858 technical support 1-800-327-9420 10 regulating the thread lock • normally the lock should lay towards the bottom portion of the work. The position would need to be changed if a thicker needle plate is installed. • first bring the take up...
Page 13: Thread Guide
R andall union l ock -s titch thread guide since 1858 since 1858 www.Campbell-randall.Com 11 thread-guide (ul-165) adjustment setting the thread-guide: • set the guide so it delivers thread well into the needle throat (hook) of the needle. • the guide should clear the needle by approximately 1/16” (...
Page 14: Alignment
Note: these adjustments are normally made only when related parts have been installed or the machine is knocked out of alignment. Inspect all other adjustments before resorting to realigning the needle and awl. Alignment of the needle - r ight to l eft • remove the bottom cover ul-300/ul-301. This i...
Page 15: Timing
R andall union l ock -s titch timing since 1858 since 1858 www.Campbell-randall.Com 13 t iming of the u nion l ockstitch c ourse a djustment t iming note: do not make changes to the coarse adjustment unless there is insufficent movement to allow normal fine adjustments to the shuttle and needle timi...
Page 16: Timing
R andall union l ock -s titch timing since 1858 technical support 1-800-327-9420 14 shuttle timing - f ine a djustment the thread should release off the needle about halfway on the shuttle hook. If the needle holds the thread too long or too short, then the shuttle needs to be delayed or advanced. •...
Page 17: Trouble Shooting
R andall union l ock -s titch trouble shooting since 1858 www.Campbell-randall.Com 15 reference points move the hand wheel until the take-up is at its highest point. In this position: • the needle is 1/16” below the plate • the gap between the needle and the shuttle point should be about 1/16” • par...
Page 18: Trouble Shooting
R andall union l ock -s titch trouble shooting r andall union l ock -s titch since 1858 technical support 1-800-327-9420 16 since 1858 skipping stitches skipping stitches may be caused by one of several reasons and is usually a matter of adjustment. 1. Damaged needle 2. Height of the needle is impro...
Page 19: Trouble Shooting
R andall union l ock -s titch trouble shooting since 1858 www.Campbell-randall.Com 17 loose stitches - bottom 1. Make certain machine is correctly threaded. 2. Top tension is too loose 3. Bottom tension is too tight. A strong bobbin thread may cause trouble in pulling the thread-locks into the mater...