(A)
A
B
Adjusting Backlash between Hook Drive Gear and Lower
Shaft Gear
The rotational play of the hook should be 0.8 mm or less when the tip of the rotary hook is
within the width of the feed dog as shown below.
Adjust the backlash after adjusting the clearance between the needle and the rotary hook.
To check:
1. Turn the power switch off.
2. Remove the extension table and bed cover.
3. Loosen the hexagonal socket screw (A).
Jog the hook race with your fingers to check the rotary
play. If the play is larger than 0.8 mm or the gears do
not turn smoothly, adjust the backlash as follows.
Adjustment procedure:
1. Turn the lower shaft bushing (1) (eccentric), in the
direction of A when the play at rotary hook tip is too
large.
2. Turn the lower shaft bushing (1) (eccentric), in the
direction of B when the play at rotary hook tip is too
small.
3. Tighten the hexagonal socket screw (A).
4. Reattach the bed cover and extension table.
(1) Lower shaft bushing
(2) Play of the rotary hook should be 0.8 mm or less.
(3) Tip of rotary hook
(1)
(2)
(3)
21
www.promelectroavtomat.ru
To Next Page
Loading...
