Upper Shaft And Tension Pulley Mechanism - Brother LH4-B800E Service Manual

2. DISASSEMBLY

2-9. Upper shaft and tension pulley mechanism

q
q
y
t
Loosen the screw q, and then remove the pulley assembly w.
Remove the screw e, and then remove the synchronizer assembly H80 r from the arm.
Remove the two bolts t and the two plain washers y, and then remove the tension pulley assembly u.
Remove the screw i and the set screw o, and then remove the thread take-up crank !0 from the upper shaft
assembly !1 .
Loosen the two set screws ! 2 , and then remove the set screw collar assembly ! 3 .
Loosen the two set screws ! 4 , and then remove the bobbin winder pulley ! 5 .
Loosen the set screw !6 , and then remove the timing pulley U assembly !7 .
Remove the timing belt ! 8 .
Remove the bearing ! 9 .
2 - 16
w
r
w
r
e
u
!0
!1
LH4-B800E
!8
u
t
!1
i
o
!6
!7
!4
!8
!5
!3
!2
!2
!4
!9
!1