Table Of Contents - JUKI LU-2810 Series Engineer's Manual

海外講習会用121122 LU-2810(-7)_EM
1. Specifications ................................................................................................. 1
2. Standard adjustment ...................................................................................... 2
(1) Needle entry position (Standard gauge type) ............................................................... 2
(2) Needle entry position (Europe gauge type) .................................................................. 2
(3) Height of the feed dog ..................................................................................................... 4
(4) Height of the hook ........................................................................................................... 4
(5) Adjusting the inner hook guide ...................................................................................... 6
1) Clearance of inner hook guide .................................................................................................................6
2) Inner hook guide timing ............................................................................................................................6
(6) Needle-to-hook timing ..................................................................................................... 8
1) Height of the needle bar ...........................................................................................................................8
2) Needle-to-blade point of hook timing .......................................................................................................8
3) Adjusting the hook needle guard ..............................................................................................................8
(7) Lift of the presser foot ................................................................................................... 10
1) Hand lifter ...............................................................................................................................................10
2) Knee lifter (Without thread trimmer only) ...............................................................................................12
3) Automatic presser foot lifter (Machine with thread trimmer only) ...........................................................14
(8) Feed momentum ............................................................................................................ 16
1) Alternate momentum ..............................................................................................................................16
(9) Needle sway (Adjusting the bottom feed amount) ..................................................... 16
(10) Feed cam timing ............................................................................................................ 18
1) Horizontal feed cam timing .....................................................................................................................18
2) Vertical feed cam timing .........................................................................................................................18
3) Top feed cam timing ...............................................................................................................................20
(11) Stitch length of forward/reverse feed .......................................................................... 22
(12) Position of the reverse feed control lever ................................................................... 22
(13) Safety clutch .................................................................................................................. 24
(14) Balancer .......................................................................................................................... 24
(15) Reverse feed cylinder .................................................................................................... 26
(16) Lubrication ..................................................................................................................... 28
(17) Thread trimmer device .................................................................................................. 30
1) Position of the counter knife and the clamp spring ................................................................................30
2) Position of the counter knife base ..........................................................................................................32
3) Vertical position of the moving knife .......................................................................................................32
4) Thread trimmer cam timing ....................................................................................................................34
5) Position of the thread trimmer cam ........................................................................................................36
6) Adjusting the knife pressure ...................................................................................................................36
(18) Detection switch of the amount of alternate vertical movement .............................. 38
3. Portion to which L�CKTITE is applied ....................................................... 40
4. Selective parts and consumable parts ....................................................... 41
5. Applying grease ............................................................................................ 42
(1) Applying grease ............................................................................................................. 42
(2) Greasing points ............................................................................................................. 42
1) Needle bar rocking base ........................................................................................................................42
2) Alternate vertical change base ...............................................................................................................43
3) Horizontal feed change base .................................................................................................................43
4) Greasing point indication drawing (* Indicating the points where grease is applied at shipment.) .........44
6. Engraved marker dots on the handwheel (for the machine with thread
trimmer only) ................................................................................................. 56
7. Lubrication route diagram ........................................................................... 57
8. Machine head wiring (for the machine with thread trimmer only) ........... 58
(1) Connectors coming from machine head (Connect to control box) .......................... 58
(2) Connectors that are connected in the head cover ..................................................... 59
9. Troubles and corrective measures ............................................................. 60
(1) With regard to sewing ................................................................................................... 60
(2) With regard to thread trimming .................................................................................... 65
10. Drawing of table ............................................................................................ 69
(1) For without thread trimming ......................................................................................... 69
(2) For SC-922 ...................................................................................................................... 70
C�NTENTS
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