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Brother LH4-B800E Service Manual Page 84

Electronic lockstitch button holer.
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Plunger pump mechanism
r
w
q
e
t
y
u
Check that the notches (A) of the plungers q and the lower shaft w are aligned, and then insert the two plungers q
and the two compression springs e into the bush r and secure them with the two screws t.
Insert the oil tube y into the lubricating hole to the right of the bush r. Insert the oil tube u that is connected between
the plunger and the filter into the lubricating hole to the left of the bush r.
Insert the oil tube ! 1 into the lubricating hole to the right of the bush r. Pass the outlet of the oil tube ! 1 through the
tube support ! 2 . Secure the tube support ! 2 to the bed with the screw ! 3 . Insert the oil tube ! 4 that is connected
between the oil terminal and the plunger pump through the lubricating hole to the left of the bush r.
Pass the oil tube ! 6 that is connected between the oil terminal and the oil outlet through tube support D ! 5 . Secure
tube support D ! 5 to the bed with the screw ! 7 .
Secure the four tubes that are coming out from the bush r to the bed in two places as shown in the illustration with the
cord holder i, screw o and plain washer !0 .
Install the pump filter !8 to the oil filter bracket @1 with the two springs !9 and the two screws @0 .
Insert the oil tube oil tube u that is connected between the plunger and the filter through the oil filter bracket @1 . Install
the oil filter bracket @ 1 to the bed with the three screws @ 2 .
(A)
w
q
o
!0
i
!0
o
i
r
!1
o
!0
!4
i
r
@2
!6
!5
!7
!2
!3
!1
u
@1
@2
!8
!9
!9
@0
@0
LH4-B800E
3. ASSEMBLY
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