Short thread cutter
Service Instructions 1767 - 00.0 - 12/2016 85
17.2 Setting the thread-pulling knife
Proper setting
When the thread-pulling knife (1) is at rest, the distance between the
highest point of the control cam (7) and the roller (5) is 0.1 mm
The control cam (7) makes contact with the clamping ring (6).
The marking (3) on the thread-pulling knife (1) is adjacent to the cutting
edge of the counter blade (2)
The knife carrier (4) must have no axial play, but still run smoothly
Fig. 68: Setting the thread-pulling knife
To set the thread-pulling knife:
1. Loosen all 4 screws on the clamping ring (6) and push the clamping
ring (6) toward the hook bearing.
2. Tighten all 4 screws on the clamping ring (6).
3. Loosen both threaded pins on the control cam (7).
4. Turn the lever (8) as far as it will go against the screw (10).
5. Set the distance between the roller (5) and the highest point of the
control cam (7) to 0.1 mm.
6. Tighten both threaded pins on the control cam (7).
7. Loosen the clamping screw (9) on the lever (8).
8. Turn the thread-pulling knife (1) until the marking (3) on the cutting
edge of the counter blade (2) is adjacent to it.
9. Tighten the clamping screw (9).
Take care to ensure that there is no axial play.
(1) - Thread-pulling knife
(2) - Counter blade
(3) - Marking
(4) - Knife carrier
(5) - Roller
(6) - Clamping ring
(7) - Control cam
(8) - Lever
(9) - Clamping screw
(10) - Screw
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