Brother BAS-311E Adjusting the tension of the timing belt, Adjusting the tension of Y-timing belt

Chapter 4. Adjustments

12. Adjusting the tension of the timing belt

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

■ 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

qtension using the bolt r.

e

wr

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.

tThen adjust the X-timing belt B t with the adjust bolt u to produce a deflection of 3 mm.

y

9.8N(1kgf) 3mm
80mm	u

■ Adjusting the tension of Y-timing belt

1. Remove the belt cover q and the frame side cover w.

q

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.
q	Adjust the position of the Y-feed pulse motor bracket e
e	using the bolt t.
	When the power is turned on, move the work clamp arm
u
	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.
r
t

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