Feed Mechanism (Y Axis) - Brother BAS-311E Service Manual

Feed mechanism (Y axis) 311E and 311EL
!1
!0
q
o
!0
i
0.5mm
r
w
!5
!3
!1
u
!4
!6
e
u
w
t
r
t
y
u
0.5mm
o
!2
q
!8
!7
u
"A"
BAS-311E.311EL.326E.326EL
1. Loop the Y-timing belt q around the Y-driving pulse mo-
tor bracket w, and pass Y-pulley shaft B e through the
Y-driving pulse motor bracket w, timing pulley A r, and
the micro bearing t. Attach the retaining ring y to hold
them.
2. Insert Y-pulley shaft A i into the Y-driving pulse motor
base u, passing it through timing pulley A o, the ball
bearing ! 0 , and the idle gear ! 1 . Position the idle gear ! 1
so that there is no end play with it.
3. Secure timing pulley A r with a clearance of 0.5 mm
from the Y-driving pulse motor bracket w left.
4. Secure timing pulley A o with the set screw ! 2 to pro-
vide a 0.5 mm clearance with the Y-driving pulse motor
base u.
5. Lightly pressing the driving gear !4 of the Y-pulse motor
! 3 against the idle gear ! 1 , attach the Y-pulse motor ! 3 to
the Y-driving pulse motor base u.
Note: Make sure that there is no backlash between the
idle gear ! 1 and the driving gear ! 4 .
w
6. Temporarily attach the Y-driving pulse motor bracket w
to the Y-driving pulse motor base u using the bolts !5 .
7. Sandwich the timing belt spacers !7 between the Y-tim-
ing belt q and the Y-driving shaft holder !6 , place the
belt holder !8 on the Y-timing belt q, and secure the Y-
timing belt q to the Y-driving shaft holder ! 6 .
!9
8. Lightly pressing the assembled Y-driving pulse motor
base u against end A of the machine, secure it with the
screws.
Chapter 3. Assembly
35