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Union Special Symaskin 35800BRWH

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ADJUSTING INSTRUCTIONS / ILLUSTRATED PARTS LIST

MANUAL NO. PT9640

STYLES

35800

High Speed

Feed- Off- The- Arm

With

Plain Feed

Differential Feed

35800BLW

35800BLWP

35800BQW

35800BQWP

35800BRW

35800BRWH

35800BRWP

35800BRWL

35800BRWPL

35800BWDN

35800BWDR

35800BWW

35800BWWP

35800BWWL

35800BWWPL

REV 03/29/06

Manual No. PT9640 Adjusting Instructions & Illustrated Parts List for

35800 Series Machines

PREFACE

This parts manual has been prepared to assist you in locating individual parts or assemblies on 35800 Series machines.

It is the desire of Union Special that each machine run at its optimum performance. Parts listed in this manual are designed

specifically for your machine and are manufactured with utmost precision to assure long lasting service.

This manual has been comprised on the basis of available information. Changes in design and/or improvements may

incorporate a slight modification of configuration in illustrations or part numbers.

On the following pages are illustrations and terminology used in describing the parts used on 35800 Series machines.

Union Special Corporation Rights Reserved In All Countries

Printed in U.S.A. October 2002

CONTENTS

SAFETY RULES ..................................................................................................................................................................................................... 4

IDENTIFICATION OF MACHINES ....................................................................................................................................................................... 5

CLASS DESCRIPTION ........................................................................................................................................................................................ 5

STYLE OF MACHINES ......................................................................................................................................................................................... 5

STYLE OF MACHINES (CONT.) .......................................................................................................................................................................... 6

ILLUSTRATIONS ................................................................................................................................................................................................... 6

IDENTIFYING PARTS ........................................................................................................................................................................................... 6

TERMS ................................................................................................................................................................................................................. 6

THREADING & OILING FOR PLAIN FEED .......................................................................................................................................................... 7

THREADING & OILING FOR DIFFERENTIAL FEED ............................................................................................................................................. 8

NEEDLES ............................................................................................................................................................................................................. 9

LUBRICATION ..................................................................................................................................................................................................... 9

THREADING ........................................................................................................................................................................................................ 9

ADJUSTING INSTRUCTIONS ............................................................................................................................................................................... 9

TORQUE REQUIREMENTS .................................................................................................................................................................................. 9

SYNCHRONIZING NEEDLE AND LOOPER MOTIONS .................................................................................................................................... 10

TIGHTENING NEEDLE HEAD ............................................................................................................................................................................ 11

ALIGNING NEEDLES IN THROAT PLATE SLOTS .............................................................................................................................................. 11

CENTERING THE CYLINDER ............................................................................................................................................................................. 11

SETTING THE LOOPER ...................................................................................................................................................................................... 11

SETTING THE LOOPER AVOID PLAIN FEED ..................................................................................................................................................... 12

SETTING HEIGHT OF NEEDLE BAR ................................................................................................................................................................... 12

SETTING THE FEED DOGS FOR PLAIN FEED ................................................................................................................................................... 12

SETTING THE FEED DOGS FOR DIFFERENTIAL FEED ....................................................................................................................................... 12

SETTING THE FEED DOGS FOR DIFFERENTIAL FEED (CONT.) ........................................................................................................................ 13

CHANGING STITCH LENGTH .......................................................................................................................................................................... 13

SETTING REAR NEEDLE GUARD ...................................................................................................................................................................... 13

PRESSER FOOT AND PRESSER BAR ADJUSTMENT ......................................................................................................................................... 14

UPPER FEED ROLLER ADJUSTMENT ................................................................................................................................................................ 14

UPPER FEED ROLLER ADJUSTMENT (CONT.) ........................................................................................... ...................................................... 15

THREAD TENSION AND RELEASE .................................................................................................................................................................... 15

DIFFERENTIAL CONTROL ................................................................................................................................................................................. 15

SETTING NEEDLE THREAD TAKE-UP AND FRAME EYELET .............................................................................................................................. 16

LOOPER THREAD TAKE-UP ADJUSTMENT ...................................................................................................................................................... 16

FOLDER ADJUSTMENT ..................................................................................................................................................................................... 17

AIR BLOWER TUBE ADJUSTMENT .................................................................................................................................................................... 17

PULLER ADJUSTMENTS .................................................................................................................................................................................... 17

PNEUMATIC ADJUSTMENTS ............................................................................................................................................................................ 18

ADJUSTING STOP COLLAR ON FEED ROLLER FOR PNEUMATIC MACHINES ............................................................................................. 19

MAIN FRAME, CAST-OFF PLATE, EYELETS, MISCELLANEOUS COVERS AND BUSHINGS ........................................................................... 21

MAIN FRAME, CAST-OFF PLATE, EYELETS, MISCELLANEOUS COVERS AND BUSHINGS (CONT.) ............................................................. 23

CYLINDER COVERS AND BUSHINGS FOR PLAIN FEED ................................................................................................................................. 25

CYLINDER COVERS AND BUSHINGS FOR PLAIN FEED (CONT.) .................................................................................................................. 27

CYLINDER COVERS AND BUSHINGS FOR DIFFERENTIAL FEED .................................................................................................................... 29

CYLINDER COVERS AND BUSHINGS FOR DIFFERENTIAL FEED (CONT.) ..................................................................................................... 31

DETACHABLE HEAD ASSEMBLY ...................................................................................................................................................................... 33

OILING, NEEDLE LEVER, CRANKSHAFT AND MAIN SHAFT PARTS FOR PLAIN FEED ................................................................................... 35

OILING, NEEDLE LEVER, CRANKSHAFT AND MAIN SHAFT PARTS FOR DIFFERENTIAL FEED ...................................................................... 37

PLAIN FEED BAR, FEED LIFT & FEED DRIVE COMPONENTS FOR PLAIN FEED .............................................................................................. 39

DIFFERENTIAL FEED BAR, MAIN FEED BAR, FEED LIFT ECCENTRIC ASSEMBLY FOR DIFFERENTIAL FEED................................................... 41

FEED DRIVE COMPONENTS, LOOPER DRIVE COMPONENTS AND LOOPERS FOR PLAIN FEED ............................................................... 43

LOOPERS, LOOPER HOLDERS, FEED DRIVE COMPONENTS AND LOOPER AVOID COMPONENTS FOR DIFFERENTIAL FEED ........................... 45

UPPER ROLLER FEED, FOOT LIFTER AND THREAD TENSION PARTS ............................................................................................................ 47

UPPER ROLLER FEED, FOOT LIFTER AND PARTS (CONT.) THREAD TENSION .............................................................................................. 49

REAR ROLLER & PRESSER FOOT PNEUMATIC COMPONENTS & TREADLE SWITCH ................................................................................... 51

PULLER DRIVE ASSEMBLY ................................................................................................................................................................................ 53

PULLER BRAKE ASSEMBLY ............................................................................................................................................................................... 55

SEWING PARTS FOR PLAIN FEED .................................................................................................................................................................... 57

SEWING PARTS FOR DIFFERENTIAL FEED ....................................................................................................................................................... 59

THREAD STAND ................................................................................................................................................................................................ 61

ACCESSORIES .................................................................................................................................................................................................. 62

NUMERICAL INDEX OF PARTS ........................................................................................................................................................................ 63

NUMERICAL INDEX OF PARTS ........................................................................................................................................................................ 64

NUMERICAL INDEX OF PARTS ........................................................................................................................................................................ 65

NOTES ............................................................................................................................................................................................................... 66