jug said:

you dont need to remove the engine.

did you remove the belt on the alternator?

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yes, first I removed the two electric cables, then the plastic cover of the belt and then the belt. Then I removed the two bolts with which the alternator is fixed in its supporting frame, then, with some struggle and anti-rust spray, I removed the alternator from the hinges of the supporting frame. It won't fall to the ground, though, there seemes to be a hydraulic metal tube in the way and some other structure. I did push the alternator around for some time, but it just wouldn't find a place large enough too come free of the engine compartment. So the alternator is "free" since I can turn it around and even push it 30 cm away, but it is always blocked by some structure (motor, hydraulic tubes etc). This is so ridiculous...



by the way, I noted that the alternator doesn't turn smoothly, first it does, then I can feel a big resistance, then it's smooth again... is the bearing of the alternator gone? I want to get the alternator out to have a close look at it...

oh i see. sounds like you'll have to remove at least one of the things in the way.

Finally, I got the alternator out. I had to remove the right front wheel and some plastic protection.

I isolated the 6 main diodes from the plate, all of them tested ok.

I haven't found the 3 diodes for the exciter circuit yet. I wonder if they are integrated in the voltage regulator...?

The two coal pieces are each about 9 mm long, by that value I mean the length of the coals when they're completely out, measured against the plastic case. When the voltage alternator is in place, the coals stick 3 mm out. So they are not yet completely worn.

The coal pieces of the new voltage regulator are 12 mm long...

Which means that after 160 000 km, the coals did only wear for about 3 mm.

The rotor does not turn smoothy, there is one bit for each 360° rotation where it gots slightly stuck, and there is some sliding noise to it.

I'll try to undo the alternator casing later...

Undoing the alternator casing is more difficult than I thought.

First, there sits a completely rusted nut on the front, for which special tools are needed to get it off, then, even after removing the four screws which join the casing, the casing won't come a part. I believe the two inner bearings hold the thing together (one at each side). hm

I would prefer to leave the casing as it is and just replace the voltage regultor, but the problem is the rotor doesn't rotate smoothly...

make life easy, fit a scrapyard alternator

jug said:

make life easy, fit a scrapyard alternator

Click to expand...

Yes that's what I'm doing now. Searched for a used part and found one... from a scraped car with only 12 000 km on the clock... will costs me 150 swiss francs, or about 60 pounds... will go and get it.

The old alternator is definitively gone, it's not the bearing, it's the rotor which hits the stator once on each revolution