Old Norton owner has forgot

cash

Joined

Nov 10, 2006

Messages

1,530

• Dec 9, 2007

• #1

I've found the alternator stator on my Mk3 850 is off centre and I cannot remember if there's a simple method of getting it centred without maching and shimming. Any help would be appreciated.

Thanks in advance.

Cash

 

L.A.B.

Moderator

VIP MEMBER

Joined

Nov 20, 2004

Messages

20,423

• Dec 9, 2007

• #2

I had the same problem on my Mk3, and I just filed/sanded the inside of the stator to give more rotor clearance, and I've had no problems.

 

N

norflog76

Joined

Dec 26, 2006

Messages

48

• Dec 9, 2007

• #3

Is it "old norton" owner or "old" norton owner ?

Its quite easy to just drill out the stator mounting holes a little bigger, then place equal thickness shim material of some type between the rotor and stator at each of the mounting stud locations while you tighten it up.

Randy

 

N

norbsa48503

Joined

Apr 7, 2004

Messages

1,691

• Dec 9, 2007

• #4

Before adjusting check it once at one rotor position than at another than another if it's the cranks fault or the fault of a decaying rotor you need to know before proceeding.

 

cash

Joined

Nov 10, 2006

Messages

1,530

• Dec 9, 2007

• #5

Yeah! both and feeling older right now.
On the Mk3 the stator neatly fits inside three machined lugs. I'd need to open these out or turn a little off the outside of the stator.
The rotor is running true within 0.003", I'm sure it's the stator as the old one was OK. I fitted this 3 phase stator a couple of years ago and didn't check, did today.

Cash

 

cash

Joined

Nov 10, 2006

Messages

1,530

• Dec 15, 2007

• #6

Yes it was the stator the concentricity was out. Machined a little from the OD and shimmed it over.

Thanks,

Cash