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Feed Mechanism - Brother LH4-B800E Service Manual

Electronic lockstitch button holer.
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2. DISASSEMBLY

2-3. Feed mechanism

t
y
r
u
!0
!1
y
Remove the screw q and the plain washer w, and then remove the cord holder e and the cord support u.
Disconnect the cords for the feed pulse motor r, DC fan motor 40 assembly t and feed home position sensor y.
Remove the screw i and the plain washer o, and then remove the feed sensor support plate !0 .
Remove the screw !1 , and then remove the feed home position sensor y from the feed sensor support plate !0 .
Remove the screw ! 2 , and then remove the feed motor cover ! 3 .
Remove the two screws !4 , and then remove the DC fan motor 40 assembly t from the feed motor cover !3 .
Remove the two bolts ! 5 , and then remove the belt holder ! 6 from the feed arm support ! 7 .
Loosen the bolt !9 .
Remove the three screws @ 0 and the three plain washers @ 1 .
Loosen the two set screws @ 2 , and then remove the pulley A assembly @ 3 .
Remove the four bolts @4 , and then remove the motor mounting bracket @5 from the feed pulse motor r.
Loosen the set screw @ 6 , and then remove the support shaft @ 8 .
Remove the timing belt !8 and the pulley B assembly @7 .
Remove the two ball bearings (688ZZNR) @9 .
Loosen the set screw # 1 , and then remove feed guide shaft B # 2 from the feed arm support ! 7 .
Remove the two bolts # 0 .
Remove the feed arm support ! 7 and feed guide shaft A # 3 .
Remove the two retaining rings # 4 , and then remove the linear bush # 5 from the feed arm support ! 7 .
Remove the screw # 6 , and then remove the ball bearing stopper # 7 .
Remove the two feed shaft linear bushes #8 .
2 - 4
e
q
w
u
q
w
@0
i
@1
o
!4
t
!2
!3
!6
!8
!5
!7
!8
!9
@4
@5
r
@3
@2
LH4-B800E
@8
!8
@6
@7
#2
#3
#0
#4
#5
#8
@9
#1
!7
!7
#6
#7

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