Union Special 35800 Handleiding
Union Special
Naaimachine
35800
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40052737
No.E376-00
ENGINEER’S MANUAL
Feed-off-the arm, 3-Needle, Double Chainstitch Machine
35800 Series
®

Introduction
This Engineer’s Manual is written for the technical personnel who are responsible for the service and mainte-
nance of the machine.
The maintenance services to be done on this sewing machine should be based on this manual.
This manual gives the "Standard Adjustment" on the former section under which the most basic adjustment
value is described and on the latter section the "Results of Improper Adjustment" under which stitching errors
and troubles arising from mechanical failures and "How To Adjust" are described.

CONTENTS
1. Specications ........................................................................................................ 1
(1) Roller mechanism/clutch type ............................................................................................... 1
(2) Roller mechanism/belt type ................................................................................................... 2
2. Model list ................................................................................................................ 3
(1) Model list using the roller mechanism of the clutch type................................................... 3
(2) Model list using the roller mechanism of the belt type ....................................................... 3
3. Description of US model code .................................................................... 5
4. Description of model code .......................................................................... 6
5. Names of machine head .............................................................................. 7
6. How to pass the threads.............................................................................. 8
(1) Dierential feed....................................................................................................................... 8
(2) 1 piece feed ............................................................................................................................. 9
7. Standard adjustment ............................................................................................10
(1) How to remove the gauge components and upper feed roller ......................................... 10
(dierential feed mechanism and 1 piece feed mechanism)
(2) Timing between the looper and needle bar ........................................................................ 12
(3) Adjustment of the needle entry positions in the right-left and front-rear directions ..... 14
(4) Looper adjustment ............................................................................................................... 16
1) Looper return .....................................................................................................................................16
2) Adjustment of the clearance between the looper and needle ............................................................16
(5) Adjustment of the needle bar height .................................................................................. 18
(6) Adjustment of the looper motion paths.............................................................................. 20
(7) Adjustment of rear needle guide ......................................................................................... 22
1) Longitudinal adjustment of the rear needle guide ..............................................................................22
2) Height adjustment of rear needle guide .............................................................................................22
(8) Adjustment of feed dog height and longitudinal movement
(dierential feed dog mechanism) ...................................................................................... 24
1) Height of main feed dog.....................................................................................................................24
2) Height of differential feed dog ............................................................................................................24
3) Adjustment of longitudinal movement of main feed dog ....................................................................24
4) Adjsutment of vertical height of main feed dog and differential feed dog ..........................................24
5) Gradient of main feed dog and differential feed dog......................................................................... 24
(9) Adjustment of feed dog height and longitudinal movement
(1 piece feed dog mechanism) ............................................................................................ 26
1) Height of main feed dog.....................................................................................................................26
2) Adjustment of longitudinal movement of main feed dog ....................................................................26
(10) Adjustment of feed mechanisms ........................................................................................ 28
1) Adjustment of stitch length.................................................................................................................28
2) Adjustment of differential feed amount ..............................................................................................28
(11) Presser adjustment .............................................................................................................. 30
1) Adjustment of amount of rise of presser ............................................................................................30
2) Adjustment of presser bar pressure................................................................................................... 30
(12) Adjustment of upper feed roller .......................................................................................... 32
(13) Replacement of upper feed roller........................................................................................ 34
(14) Adjustment of drawing amount of upper feed roller ......................................................... 36
Product specificaties
Merk: | Union Special |
Categorie: | Naaimachine |
Model: | 35800 |
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