alternator/magnet

moley · Post by **moley** » Tue Jul 01, 2003 7:59 pm

i have replaced my alternator and magnet on ,my 1960 G12.. and when the lights are on and the engine running its sound like the preferable box of nuts and bolts but when the lights are off and its running it sounds ok

I know its something to do with replacing the alternator cause it was ok before then.

i have heard u can adjust some alternators and check with a feller gauge.. but i just cant see how u can when the altern is in the outer primary???

silverarrow · Post by **silverarrow** » Wed Jul 02, 2003 11:52 am

Janet,

have you got a feller guage to lend him?

silverarrow · Post by **silverarrow** » Wed Jul 02, 2003 11:57 am

I presume you take the rotor off the engine and check the clearances with the rotor held in position?

It is worth taking the primary drive cover off and checking all is fitted correctly and securly and there are no signs of damage.

Les Smith

Janet · Post by **Janet** » Wed Jul 02, 2003 11:50 pm

>

You beat me to it. I was going to have a look to see if I've got anything sutable for checking the appropriate dimensions.

Janet · Post by **Janet** » Wed Jul 02, 2003 11:54 pm

Or even "suitable"

RogerNorman · Post by **RogerNorman** » Tue Jul 08, 2003 11:30 pm

The easy solution is to loosen the stator off, wrap three turns of masking tape around the rotor and refit. Provided you haven't over loosened the stator, when you take the cover back off, the stator should be centralised to the rotor and running to the correct clearance. Dont forget to take the masking tape back off the rotot when you have done - it won't work very weel with it left on!

moley · Post by **moley** » Wed Jul 09, 2003 2:41 pm

thankyou roger i just couldnt see how i could check a clearance when the alternator is in the primary.

I will try and see if any better

thankyou

gsneyd · Post by **gsneyd** » Sat Jul 12, 2003 10:51 pm

A friend of mine has a Triumph where the rotor and stator windings are purchased as a pair and fitted to the inner primary chaincase cover, hence there should never be a problem. He had however fitted an aftermarket inner cover, or fom another source anyway. His problem was found to be that the locating holes for the stator windings did not give central alignment with the stator. Made a right mess.
graham Sneyd

lawrence · Post by **lawrence** » Fri Jul 18, 2003 9:13 pm

i had a similar problem on a model 16. It was the three countersunk screws behind the magnet which hold the primary case to the crankcase working loose. Mind you that sounded like a bag of nails all the time, not just when the lights were on!

moley · Post by **moley** » Mon Aug 11, 2003 2:32 pm

thanks i took outer primary cover off to find primary chain very tight - i adjusted that and also although crank nut was tight i could move washer behind it, so i took off cleaned and put back tight.... no noises now.... hurray