Hohner UNIVERSAL 52/8 S, Operating Instructions, Spare Parts List, Special Staples, Options

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Servicing
Hohner Maschinenbau GmbH HK 52/8 S 51
4.2.4 Replacing the knife
- Fig. 29 -
- For replacing the knives remove knives box
by undoing the screws at the guide .
- Fig. 30 -
- Push the knife slider
out of the knife box (arrow A)
Make sure that the pressure spring doesn’t strip.
- Change the knife (see following chapter)
- Fig. 32 -
- Replace knife slider
in the knife box (arrow B), compressing the pressure spring of the knife
slider with a screwdriver, and pushing it into the knife box. Make sure that the pressure spring is
not bent.
- Fig. 29 -
- Attach wire guide tube
to drill hole in knives box.
- Place knives box on the guide (please note - right fastening thread for normal staples and
left fastening thread for loop-stitching clamps).
- Tighten screws .
4.2.4.1 Rotating/Changing the flat knife
- Fig. 31 -
The flat knife has 2 cutting edges. If the first cutting edge is blunt, the knife can be rotated.
- Unscrew fastening screw
(approx. triple per side, slightly turned, usable).
- Rotate or replace flat knife and tighten fastening screw .
4.2.4.2 Replacing the circular knife
- Fig. 31 -
Round knife can be used several times if turned.
- Loosen the clamping screw
and remove the circular knife .
- Press new circular knife completely into the seat in the knife box.
- Adjust circular knife (cf. Adjusting the circular knife).
4.2.4.3 Adjusting the circular knife
- Fig. 33 -
The circular knife is adjusted so as to ensure clean cutting of the wire.
When the knives are mounted, set the clearance between the flat and circular knives by carefully
“levering” with a screwdriver.
- Loosen clamping screw
and position circular knife exactly against the flat knife by "carefully
levering" with a screwdriver.
- Tighten clamping screw .
If the distance between the knives is set too close the knife slider
may block and cause a wire
jam.