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2011-08-11

Playing with a Nippon-Denso alternator.

Since Jimmy in his youth seemed to always have alternator trouble with whatever dunger he was using, he's made a habit of inspecting them in his mature years.
First up remove the alternator then spin the pulley if it spins smoothly then merely looking at the brushes should suffice, if not then don't worry about brushes and get an exchange unit.
This is the first ND one I've played with and I like it already. Most of them are probably very similar with the back cover plate needing to come off, use a 7mm spanner on the three green pointered screws, or if you're brave and strong a philips head screwdriver, but be warned the Japanese always do up screws far tighter than mere mortals can cope with. The Yellow nut is a 10mm hex and only has to be undone to the last thread or two and the insulator will pull out of the cover plate and allow its removal.

The new brushholder cost $21 on ebay and judging by the wear on the old one wasn't needed for a long time yet, but peace of mind is a wonderful thing when you're out in the middle of nowhere, so I put it in anyway.

The brushholder on these are simply held in by the green pointered screws, use a good screwdriver for these not granddad's old hand me down, you don't want to burr them. The lower one is longer but the short one won't fit in that hole so you'll know if you get them wrong like I did. Something thin may help to hold the brushes back while fitting them and be careful they line up properly.
Now Jimmy will have peace of mind for a while, say 100,000 km till he bothers looking again.

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