Brother BAS-311E Manual De Propietario

BAS-311E.311EL.326E.326EL

■ Adjusting the tension of X-timing belt    311E

1. Remove the X-feed bracket cover 

q.

2. Loosen the bolt 

e of X-pulley base B w, then adjust the

tension using the bolt 

r.

■ Adjusting the tension of Y-timing belt

1. Remove the belt cover 

q and the frame side cover w.

2. Loosen the bolt 

r, and move the Y-feed pulse motor

bracket 

e to adjust the tension of the Y-timing belt.

3. When the power of the machine is turned off, there

should be no slack in the Y-timing belt 

y and the work

clamp arm 

u should move back and forth easily.

Adjust the position of the Y-feed pulse motor bracket 

e

using the bolt 

t.

When the power is turned on, move the work clamp arm

u back and forth, and adjust the tension of the Y-timing
belt 

y using the bolt t so that there is no looseness in

the work clamp arm 

u.

Note: Be sure to check the home position after adjusting the tension of the timing belt.

q

e

r

w

t

3mm

9.8N(1kgf)

80mm

q

w

e

q

u

t

r

u

y

3. Move the X-feed bracket 

y to the left end and apply a

load of 9.8N (1 kgf) to the center of the X-timing belt B 

t.

Then adjust the X-timing belt B 

t with the adjust bolt u

to produce a deflection of 3 mm.