Baby Lock BLDY Service Manual page 260

Application of
Assembly
11
Attachment of Needle thread block, Needle bar hook stand assy and Needle bar assy
1. Set the needle thread plate to the needle block. Attach the needle bar thread guide Q, needle block and
needle thread guide spring to the needle bar with the screw (screw SM2.38). Tighten the needle clamp
screw to the needle block.
*Key point
• Make sure that there is no gap between the needle bar thread guide Q and the tip of needle thread guide
spring.
• Make sure that there is 0.3 to 0.65 mm gap between the needle block and the right side of needle bar thread
guide Q.
2. Insert the needle bar into the W presser adjust plate, needle bar supporter assy, needle bar crank rod
assy, needle thread block, needle bar hook stand assy, needle bar presser spring (XC6254),
washer,thrust and needle bar supporter assy, then tighten the two screws (set screw, socket (FT)
M4x4) temporarily.
*Key point
• Fully tighten the screw after performing
3. Fully tighten the screw (screw, bind M3x6) of W presser adjust plate.
NEEDLE BAR PRESSER SPRING (XC6254)
Needle bar supporter assy
Washer,thrust
Needle bar presser
spring (XC6254)
Needle bar hook stand assy
Set screw, socket
(FT) M4x4
Needle thread block
W presser adjust plate
Screw SM2.38
Set Screw, Socket (FT) M4X4
Screw, Bind M3X6
Needle-presser module
"Adjustment of Needle bar
Needle bar
crank rod assy
No gap
Tip of needle
thread guide spring
Screw, bind M3x6
3 - 162
height".
Needle bar
0.3 -
0.65 mm
Needle bar thread guide Q
Needle thread plate
Set screw, socket
(FT) M4x4
Needle bar hook
stand assy
Screw SM2.38
Needle thread
guide spring
Needle clamp screw
Needle block