How to grind a hammer drill anchor manifold with your own hands

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We push the wooden rod into the hole until it stops against the collector. We make a mark on the rod at the top of the hole and pull it out. We apply the brush plug to the mark and reduce the cutting place by its height.
We insert a wooden spike into the hole and make sure that the plug can be screwed in. After that, we cut a narrow strip of fine sandpaper P600, wrap it around the spike and insert it into the hole again until it stops against the manifold.


We tighten the tenon with a plug and rotate the spindle by hand. If there is no great resistance, we connect a working drill to the spindle and turn it on.

We repeat the procedure several times, replacing the worn sandpaper with a new one, while constantly tightening the plug. As a result, the new plates will be equal in height to the others and the anchor will again become serviceable.

To make sure of this, we unscrew the plug, pull out the tenon hong kong telegram data with sandpaper, turn off the power drill and, rotating the spindle by hand, look at the collector. If the shine of all the plates is the same, then this is an indicator of uniform grinding.

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Correct operation of the Makita 2450 hammer drill with a collector motor is accompanied by slight sparking of the brushes in the collector area.A properly functioning electric motor has uniform sparking with a short tail.

By changing the sparking pattern, you can determine the nature and location of the malfunction in the Makita 2450, 2470 hammer drill.

The reasons for increased sparking in the electric motor commutator may be faulty brushes and their wear, short circuit or breakage of the anchor, faulty stator windings of the electric motor, breakage or improper fastening of the brush holders.