Brother BAS-311E Owner's Manual

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.

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.

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.

8. Lightly pressing the assembled Y-driving pulse motor

base 

u against end A of the machine, secure it with the

screws.

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.

r

o

!0

w

t

i

y

q

t

u

e

!1 !0

w

u

r

o

!2

0.5mm

0.5mm

u

“A”

!6

!5

!4

!7

!9

!8

w

u

!1

!3

q