$Holy Crap$ - Alternator JD 770

[chickenman]

It is seized up.

Thanks,
Bill

if it's the bearings they will have numbers on them, bearings are pretty well a standard item

when an item is designed that uses bearings , they look for standard bearings that will fit

 

[MBDiagMan]

Every community has at least one alternator shop. Unless it is completely destroyed, they can rebuild it for much less than the Cost of New.

 

[ray66v]

Find a local rebuilder.

 

[mscheer772]

I replaced my 40 amp with a 55 amp alternator. Don't know if the 770 can use the 40 amp. If it can pm me and we'll talk.

-mike-

 

[1010]

Water pump for a JD 4000 is 290.00!! Steiner has one for 99.00. I kinda feel guilty, I want to buy local, but 290 VS 99 is a know brainer!!

DAVID,

 

[atschirner]

The 20 amp alternator on my 455 shelled the front bearing last year. I was able to match the bearing number at the autoparts store. $10 later I was back in tall cotton. It took longer to remove and install it than to replace the bearings.

 

[wcpeabody]

So a quick update. The alternator was rebuilt(what ever that means) locally. It cost just over $60

One thing I noticed I thought was odd, is that it does not spin smooth but I am not sure how to describe it. Almost like it has speed bumps in there???

 

[BruceWard]

One thing I noticed I thought was odd, is that it does not spin smooth but I am not sure how to describe it. Almost like it has speed bumps in there???

When the magnets pass the coils there should be some resistance. They is what creates the voltage.

 

[irwin]

The only thing that went on my 770 was the bearings in the alternator, took it apart and matched up the bearings at NAPA, reassemble and back in business.

Don't buy a new alternator until you at least try to have it repaired.

(BTY, it was an easy repair)