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crwdns2933797:0Dave Empsoncrwdnd2933797:0crwdne2933797:0
crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Dave Empson
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| + | [* black] Measure the inside of the brush liner to find the required dimensions of the new brush, such that it moves unrestricted in the liner (5x8mm in my case). If slightly stiff it can easily be filed down. The length of the brush should probably be about half the length of the liner (I choose 12mm for a 22mm liner). You can always file it down if to long |
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| + | [* black] The new brass electrical contact linked to the carbon brush by flexible copper strands, should glide easily in the liner so that the spring pushes it against the cable contact in the plastic part of the brush holder when the spring is compressed. |
| + | [* black] If the new electrical contact is too large for the liner, file it down to size and remove burrs. In my case it was filed from 8,2mm to 5,9mm which took about 10 mins with a fine diamond file. This is best done by holding in a small vice (see images) such that the file doesn't contact the spring. |
| + | [* black] The sides of the contact can also be bent inward with pliers to fit into the liner. |
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