Thread Wiper Mechanism (1) - Brother LK3-B430E Mark II Service Manual

5-3. Thread wiper mechanism (1)

r
e
w
t
u
!2
1. Insert the thread wiper rod assembly q and the thread wiper driving lever w into the machine from above.
Fit the thread wiper shaft e with retaining rings and washers on the former two, and lightly press them
and secure using the set screw r.
2. Place the thread wiper rod assembly q on the presser bar lifter lever shaft t, and fit the retaining ring y
on it.
3. Lightly press the presser bar lifter lever shaft t, and tighten the set screw u.
4. Attach the spring i as shown in the figure above. Attach the washer o and the stop ring !0 to it.
5. Insert the thread wiper arm ! 1 and the thread wiper link ! 2 into the machine in the direction of the arrow,
and attach the retaining ring ! 3 .
6. Temporarily tighten the set screw !4 so that the thread wiper arm !1 is positioned 21 mm below from the
bottm of the arm.
7. Attach the thread wiper ! 5 using the washer ! 6 and the screw ! 7 .
8. Move the forked portion of the thread wiper driving lever w, and check that all of the thread wiper mecha-
nism moves.
9. Insert the tension release bar !8 , the pin !9 , and the thread tension assembly @0 into the machine, and
secure them using the set screw @ 1 .
* Adjust the height of the spring referring to page 4.
NOTE:
If there is no thrust in the thread wiper rod assembly w or the thread wiper mechanism operation is sluggish, it may
be due to the operation of the presser plate (shown on page 28), and error E-60 may be displayed.
!3
q
!2
!1
21 mm
!1
!4
u
!5
!6
!7
q
@1
LK3-B430E Mark II
5. ASSEMBLY
!8
!9
@0
y
t
!0
o
i
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