Brother BAS-311E service manual Mechanical description

Chapter 1. Mechanical description

Chapter 1. Mechanical description

1.Needle bar, thread take-up, lower shaft and shuttle hook mechanism

e q

	w
		i
r	!0	o

y	t
u
	!1

!2

!3

1.When the machine pulley q rotates in the direction of the arrow, the upper shaft w rotates, then it rotates the thread take-up crank e.

2.The needle bar crank r, attached to the thread take-up crank e, moves the thread take-up lever t.

3.The needle bar u attached to the needle bar clamp y is moved up and down.

4.When the machine pulley q rotates in the direction of the arrow, the crank rod i attached to the upper shaft w moves up and down.

5.The crank rod i oscillates the attached rock gear o.

6.The rock gear o oscillates the lower shaft !1through the lower shaft gear !0. The lower shaft !1oscillates the attached driver !2and inner rotary hook !3in the shuttle hook mechanism.

BAS-311E.311EL.326E.326EL 1