R65 (1981) altenator

[tvrla]

Yep, it's called the stator - it's static (doesn't rotate).

As with a lot of things airhead related, the rotor puller bolt is simple, yet complex. Contradictions abound!

One of the ways suggested to remove the rotor is to have a bolt about 40mm long that will thread into the rotor. Then have another rod 30 or 40mm long, but smaller diameter that will bottom into the hole in the crank. Then with the rod installed, screw in the bolt, which then presses on the rod and forces the rotor off.

Well, that works sometimes, and sometimes not. And it can bugger up the threads on the end of the crank.

The best thing is a grade 11? bolt something like 80mm long with half its threads ground off. I've gotten metric allen bolts from the hardware store and either ground off the threads with the grinder, or now that I've got a little lathe, with that. Much more fun with the lathe and turns out much nicer. But the bolts themselves can cost two or three bucks before any alterations.

[MR.E]

ey up

not touched the bike in a while!!
got the old rotor off the other day, seems the seal behind the rotor was leaking so i replaced that & the bean can O-ring.

The stator's plates (on the inside of the stator) had a good degree of black on them - i assumed it was oil, gave them a good clean up & put it all back together.

I turned the key to see if the gen light would come on, but it didn't!
Though i haven't run it yet with the new rotor fitted, will i need to run it for the gen light to start working?

If not could there be something i've missed??

Thanks

Elliott

[Bob_Roller]

My first guess, is that you have the fiber insulating washers that hold the brush holder in the wrong position .

The terminal with the black wire needs to be insulated from the alternator stator case, if it isn't, the power from the voltage regulator goes right to ground or earth and the alternator will not work .

If you didn't have the brush holder off, swap the wires on the two terminals on the brush holder and see if that helps .

As soon as you turn the key to the 'ON' position, the 'GEN' light should come on .

[tvrla]

If the wiring was incorrectly connected, DF attached to a ground point for instance, then the light should come on.

Besides, the brush holder shouldn't have to come off when removing the stator to replace the rotor. Right?

Ground the DF connection at the alternator (ignition on) and the charge light should come on.

If not, the next thing to check is the light bulb. Otherwise, it's a broken wire, bad connection, or no power to the circuit in the first place.

[MR.E]

My first guess, is that you have the fiber insulating washers that hold the brush holder in the wrong position .

The terminal with the black wire needs to be insulated from the alternator stator case, if it isn't, the power from the voltage regulator goes right to ground or earth and the alternator will not work .

If you didn't have the brush holder off, swap the wires on the two terminals on the brush holder and see if that helps .

As soon as you turn the key to the 'ON' position, the 'GEN' light should come on .

now then
not been on this for a while

The plate never came off but there are nylon washers on the black cable side!
still no light!!!

[MR.E]

Ground the DF connection at the alternator (ignition on) and the charge light should come on.  

done, assuming the DF conecction at altenator is on the brush plate black wire?!
but still no light!!!

Thanks

[MR.E]

Sorted it thanks to Tez at motorworks pointing out i'm an idiot!!

Thanks for all you help

Elliott

[tvrla]

Let's see if I understand this: Tez said "you're an idiot" and then the system started working correctly?

Somehow I think that's not what happened.

So what fixed it? What was wrong that's not straightened out?

[R65LS]

here's some helpful reading .....

http://www.5united.net/html/charging.html

Cheers,

Carl

[MR.E]

Let's see if I understand this: Tez said "you're and idiot" and then the system started working correctly?

Somehow I think that's not what happened.

So what fixed it? What was wrong that's not straightened out?

Well i suppose you're right!!

Since september 2011, when i altered the wiring loom i had a problem with the GEN light, it did flicker once i'd altered the loom though.
So i started stripping the stator & replaced the rotor & brushes but nothing, i spoke to Tez yesterday who went over the wiring diagram & he pointed out that the gen bulb doesn't have an earth (i wired an earth to it) but instead has 2 lives - 1 from the diode board & one from the altenator!!!

So with switching the cables in a 10 min job it's fixed!!
If only i'd read the right wiring diagram!!!!

 

[montmil]

"If only i'd read the right wiring diagram!"   –Mr.E

Oops  [smiley=deal2.gif]

[tvrla]

Excellent! I understand now. Well done getting that sorted - and it follows that old trouble shooting rule of thumb: look in the last area that was worked on.