Brother ArtCity140, Service Manual

Page: 100 / 151

Application of
Assembly
3 - 42
Needle threading mechanism
Application o
f
Assembly
Application of
Assembly
1
Assembly of Thread tension dial assembly
1. Set the upper tension control releaser to the shaft of tension control holder assy, and secure it with the
retaining ring E4.
2. Insert the straight line part of spring (X55821) into the middle one of five holes on thread tension stand,
and set the spring (X55821) to the thread tension stand. And set the thread tension disc presser to the
thread tension stand, and hang the hook part of spring (X55821) on the notch part of thread tension
disc presser. And set the two tension discs and the tension disc plate to the thread tension stand, and
set the tension spring (X55630) and the tension control nut to the bottom side of thread tension stand,
and tighten the tension control stud.
3. Set the tension control knob to the thread tension stand, and secure it with the screw (taptite, bind B
M3X10). And attach the thread tension label to the tension control knob.
4. Align the three tabs of thread tension stand with the three notch parts of tension control holder assy as
shown in the illustration below. And set the thread tension stand to the tension control holder assy, and
turn the thread tension stand in the direction of the arrow, and lock it with the hook.
Taptite, Bind B M3X10
Spring (X55821)
Tension spring (X55630)
Thread tension stand
Upper tension
control releaser
Retaining ring E4
Tension spring
(X55630)
Tension control nut
Straight line part
Spring (X55821)
Hook part
Thread tension disc presser
Notch part
Tension discs
Tension disc plate
Tension control stud
Tension control knob
Thread tension label
Taptite, bind B M3X10
Tab
Tab
Tab
Notch part
Notch part
Notch part
Lock
Thread tension stand
Tension control
holder assy
Hook
Middle one of
five holes
Thread
tension stand