Table Of Contents - JUKI LK-1900AN Engineer's Manual

1. Specifications ........................................................................................ 1
2. Configuration ......................................................................................... 2
(1) Names of main unit .............................................................................................. 2
(2) Names and explanation of switches on the operation panel ........................... 3
3. Standard adjustment ............................................................................. 4
(1) Main shaft connection/disconnection ................................................................ 4
(2) Adjustment of the main shaft wheel position ................................................... 6
(3) Removal of the main shaft motor and coupling ................................................ 8
(4) Crank connecting rod connection/disconnection .......................................... 10
(5) Crank balancer positioning ............................................................................... 12
(6) Lower shaft backlash adjustment and connection/disconnection ............... 12
(7) Oscillator gear positioning ............................................................................... 14
(8) Adjustment of hook oil amount ........................................................................ 14
(9) Shuttle connection/disconnection and oil wick piping .................................. 16
(10) Adjustment the height of the needle bar ......................................................... 16
(11) Hook adjustment ................................................................................................ 18
(12) Thread trimmer cam position adjustment and connection/disconnection.... 20
(13) Thread trimmer and presser foot origin sensor adjustment ......................... 20
(14) Adjustment of the height of the work clamp foot ........................................... 22
(15) Adjustment of the thread trimmer sensor ....................................................... 22
(16) Adjustment of the moving knife and counter knife position ......................... 24
(17) Adjustment of the height of the moving knife and counter knife .................. 24
(18) Inclination of the blade point of the counter knife .......................................... 26
(19) Floating amount of the thread tension disk .................................................... 26
(20) Second thread tension connection/disconnection ......................................... 28
(21) AT unit connection/disconnection ................................................................... 30
(22) Position of the mechanical origin .................................................................... 32
(23) Adjustment of the Y origin sensor ................................................................... 32
(24) Adjustment of the X origin sensor ................................................................... 34
(25) Adjustment of the wiper position ..................................................................... 34
(26) Adjustment of the wiper spring (LK-1903AN) ................................................. 36
(27) Adjustment of the position of the X feed motor and the Y feed motor
(Adjustment of the backlash of the driving gear) ........................................... 36
(28) Installing the feed plate support plate ............................................................. 38
(29) Installation of the feeder bar rear cover .......................................................... 38
(30) Adjustment of the bobbin winder driving wheel position .............................. 40
(31) Adjustment of the bobbin winder amount ....................................................... 40
(32) Adjustment of the shuttle upper spring position ............................................ 42
(33) Shuttle felt .......................................................................................................... 42
(34) Shape of the inner hook presser ...................................................................... 44
(35) Adjustment of the thread take-up spring ......................................................... 44
(36) Needle thread clamp device connection/disconnection ................................ 46
(37) Adjustment of the needle thread clamp sensor .............................................. 48
(38) Adjustment of the needle thread clamp notch ................................................ 50
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