Lower Shaft Mechanism (1) - Brother BAS-311E Service Manual

9. Lower shaft mechanism (1)

!3
e
!5
Matching mark
!3
!4
!3
1. Tilt the machine head until it stops.
2. Insert the rock gear shaft q from the rear of the machine, pass the rock gear w, the set screw collar e over the shaft,
bring them close together without any clearance, and tighten the set screw r.
3. Insert the lower shaft t from the rear of the machine, pass the set screw collar y over it, and engage the lower shaft
gear u with the rock gear w.
4. Sandwich the lower shaft bush i between the lower shaft gear u and the set screw collar y without any clearance,
and tighten the set screw o.
5. Fit the retaining ring !0 on the lower shaft t, press the driver !1 against the retaining ring !0 , and tighten the bolt !2 .
6. Return the machine head to its original position.
7. Fit the crank rod !3 over the crank of the upper shaft !4 , align the matching mark of the crank rod !3 with that of the
upper shaft !4 , and tighten the screw !5 .
8. Tilt the machine head until it stops.
9. Turn the pulley ! 6 to move the rock gear w right and left until the pulley rotates easily. Turn the rock gear shaft q to
allow 0.05 - 0.12 mm play of the driver !1 . Then tighten the set screw !7 .
10.Return the machine head to its original position.
w
r
w
!6
BAS-311E.311EL.326E.326EL
q
!0
!1
!2
!7
u
Chapter 3. Assembly
0.05 - 0.12mm
q
i
t
u
o
y
!1
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