JUKI DDL-8000A Engineer's Manual page 51

Direct-drive, high-speed, automatic thread trimmer
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Adjustment Procedure
7) Installation of the reverse feed arm and the reverse
feed solenoid
1. Attach the washer ❶ and the rubber seat ❷ to the reverse feed
solenoid plunger in this order.
2. Install the reverse feed solenoid and temporarily fasten it with
three each of setscrews ❸ and washers ❹ .
In this case, confirm that the direction of the reverse feed
arm ⓫ is as shown in the illustration.
3. Pull the reverse feed solenoid to your side and regularly fasten
it with three setscrews ❸ in its utmost position.
4. Adjust the feed dial to Graduation 5 and move the reverse feed
arm so that the gap length becomes 0.5 to 1.0mm between the
rubber sea ❷ and the reverse feed solenoid when the reverse
feed lever is pulled to its limit position. In the position where the
reverse feed link ❻ is positioned in the center of the reverse
feed plunger groove, tighten the reverse feed arm setscrew ❼ .
5. If the motion of the reverse feed plunger is not smooth, this may
result from the tilting of the bed column B ❽ . Therefore, loosen
the two setscrews ❺ and adjust the bed column B to stand up-
right on the bed. After adjustment, fix the two setscrews ❺ .
Results of Improper Adjustment
○ If the position of the reverse feed
link ❻ is not precise, this may be
a cause of abrasion and break-
age.
○ If the bed column B ❽ is tilted,
the reverse feed solenoid cannot
be pulled fully and the reverse
feed pitch may be decreased.
– 38 –

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