Replacement Of The Bobbin Friction Wheel; Adjustment Of The Bobbin Winder Driver Wheel Position - JUKI DDL-9000B-SH Engineering Manual

Adjustment Procedure
In regard to adjustments of the bobbin winder amount and winder
imbalance, refer to the relevant instruction manual.
In this manual, descriptions are provided in regard to problems of winder
shaft revolution errors.

1. Replacement of the bobbin friction wheel

(1) Remove three bobbin winder unit setscrews
(2) Take out the bobbin winder unit
(3) Confirm if there is extreme wearing out in the rubber section of the
bobbin winder friction wheel
If the amount of wearing out seems to be too much, replace the
worn-out section with a new one.
Bobbin winder friction wheel
Part No.

2. Adjustment of the bobbin winder driver wheel position

(1) Remove the window plate (including the AK unit) from the rear side
of the arm.
(2) Loosen the bobbin winder driver wheel setscrews
bobbin winder driver wheel
(3) Mount the bobbin winder unit
(4) Turn ON the bobbin winder lever
with the bobbin winder lever
At that time, the head
made to coincide with the bobbin winder lever
(5) Lightly make the bobbin winder driver wheel
the bobbin winder friction wheel
driver wheel setscrews
(Cautions) 1. When the bobbin winder lever
the hand wheel by hand and confirm that the bobbin
winder shaft
2. Never apply grease or such an oily component to
the rubber section of the bobbin winder friction
wheel . Otherwise, this can be a cause of friction.
.
.
.
26261503
.
on the arm.
and let the head
.
of the bobbin winder unit setscrew shall be
.
lightly contact with
and tighten two bobbin winder
.
is turned OFF, turn
does not turn.
– 73 –
Results of Improper Adjustment
(2 pcs.) of the
coincide
o If the hand wheel is turned in the
state of OFF, this can be a cause
of abnormal abrasion.