Maintenance; Cleaning; Installing The Shearing Blades; Sharpening The Shearing Blades - Kerbl 18155 Mode D'emploi

Daily lubrication
Remove the pressure bushing and apply a generous amount of grease to the inside of the sleeve. Also apply a small amount of grease to
the back teeth.
Weekly lubrication
Remove the pressure forks, pour a generous amount of lubricant into the holes on the fork body and reattach the pressure forks. Ensure
that they are secured in the hole. Remove the joint assembly by unscrewing the teeth, pour a small amount of lubricant into the ring-shaped
spaces between the bushing and the adjusting nut. The lubricant must be of high quality and suitable for use at temperatures up to 120 °C.
Regular lubrication will extend the life of your shearing handpiece.
No lubrication for bearings
Ball bearings are built into the handpiece and do not need to be oiled or greased.

4 Maintenance

Before starting maintenance work, disconnect the shearing handle from the drive.

4 .1 Cleaning

After finishing shearing, remove oil from the shearing handle by rubbing it with a dry cloth and carefully clean the outside and the shearing
blades with a dry brush. Then oil the parts to prevent rust formation. Even the smallest rust spots on the shearing blades can impair shear-
ing or make it completely impossible.

4 .2 Installing the shearing blades

A pair of shearing blades consists of a lower blade - also called the comb plate or comb (Figure 4, item 2) and an upper blade - also called
the cutter (Figure 4, position 1). When installing the shearing blades, it is important to ensure that the correct surfaces come into contact
with each other. The shearing blades are installed as follows:
Loosen the adjusting screw (Figure 3) and place the machine on a hard surface so that the comb plate screws are at the top. Loosen the
screws (Figure 5) and remove the two old shearing blades.
Ensure the new shearing blades are clean. Particular care must be taken to ensure that the ground surfaces are free of dirt. Otherwise
satisfactory shearing performance cannot be achieved even with newly ground shearing blades.
Place the new upper blade in the driving tapers of the pressure forks (Figure 6 + 2, item 2) and push the new lower blade (comb plate)
between the loosened screws (Figure 7). Now tighten the comb plate screws so that you can just about move the new lower blade sideways
by hand.
Now turn the machine over so that the adjusting screw is pointing upwards.
It is now important that you place the blades on top of each other so that the ground surface of the lower blade extends approx. 1.5 to 2.0
mm beyond the tips of the upper blade. However all of the sharp rear edges of the upper blade must lie within the marking. Once you have
adjusted the shearing blades, fix the position of the lower blade and tighten the comb plate screws.
Check that the shearing blades are fitted and that the driving tapers of the pressure forks (Figure 2, item 2) are located in the holes provided
for them in the upper blade. Now tighten the adjusting screw until the upper blade is pressed against the lower blade and you feel a slight
resistance.

4 .3 Sharpening the shearing blades

Only work with sharp shearing blades. Replace blunt or faulty blades with missing teeth. The correct regrinding of shearing blades is only
possible with special machines and by a specialist or an experienced shearer. The correct instructions for grinding can be found in the
manual supplied with each shearing blade sharpener.

4 .4 . Care of individual parts of the shearing head

The pressure forks:
Ensure that each of the two pressure forks can rotate freely in the fork. Remove the pressure forks once a week. Clean them and the front of
the fork head thoroughly. Pull out the pressure forks by hand or using pliers. Always put a small amount of grease in the holes of the fork
when removing the chicken feet. If the taper and the tip on the outer side of the chicken feet are worn out, they must be replaced as soon
as possible.
Contact pressure:
each end of the clamping bush has a different size. The larger end fits into the fork tip and the smaller end into the pressure bushing.
Increase the pressure on the upper and lower blade by turning the clamping nut. If the clamping nut is overtightened, the handpiece, upper
and lower blade will quickly overheat. This also leads to the upper and lower blades not cutting properly. If the machine no longer cuts
properly, replace the upper and lower blades with newly ground ones. If sufficient tension is not generated, consider replacing the worn
pressure pin, fork tip and pressure bushing.
20