$Holy Crap$ - Alternator JD 770

   / $Holy Crap$ - Alternator JD 770 #1  

wcpeabody

Bronze Member
Joined
Jun 7, 2008
Messages
71
Location
earth
Tractor
JD 770
I just called my local JD dealer and they said a 20 amp alternator for my 770 in >$300.

Does that sound right?

Any suggestions on where to price check them?

Might have to take it in to be rebuilt?

Thanks in advance
Bill
 
   / $Holy Crap$ - Alternator JD 770 #2  
If you buy from Deere, that's the price.
I'd look for a local alternator repair shop though...shouldn't cost too much for a rebuild.
 
   / $Holy Crap$ - Alternator JD 770 #3  
Sounds about right for John Deere. New Holland wants $278 for a small water pump for tractors, TC35, TC40,TC45, TC48, TC55. :confused2:
 
   / $Holy Crap$ - Alternator JD 770
  • Thread Starter
#4  
Thanks for the quick replies. I will take it off tomorrow and take it in for a rebuild.

Bill
 
   / $Holy Crap$ - Alternator JD 770 #5  
I'm not surprised! A new starter for my 83-420 garden tractor (20 HP Onan) lists for over $400 from "Mother Deere"! :(
 
   / $Holy Crap$ - Alternator JD 770 #6  
In case you overlooked it (or forgot), its not that the parts are expensive to get or make, its caused by the simple fact that your money isn't worth what it used to be relative to the foreign currency of the manufacturer.

Anyone care to explain to the nonbelievers why this has happened? We are now a Third World nation in the Manufacturing Sector. Wait until you see what a loaf of bread costs in 10 years. (Hint: Buy wheelbarrow stocks).

OK, now go out and buy another Grey Market tractor...
 
   / $Holy Crap$ - Alternator JD 770 #7  
I seriously boubt the alternator is bad. I have never replaced one of these style unless the bearings go bad. Usually any charging problem is the regulator/rectifier. Or you could have a broken wire or connector.
 
   / $Holy Crap$ - Alternator JD 770 #8  
The alternator in our 2000 Ford Escape is going bad, dealer said $480 to get a new one put in. I'm looking for a re-build shop.

Don't get me started on the fact that you used to be able to replace a diode, then at least the diode pack, and the voltage regulator was also a separate piece.

Pete
 
   / $Holy Crap$ - Alternator JD 770 #9  
Some rebuild shops will sell you the diodes/brushes/regulators you need for a home-brew rebuild if you can't get them somewhere else. Bearings should be easily available. The only thing that might be difficult is cleaning up the slip rings/commutator. I've rebuilt a number of starters and alternators this way and just used some crocus cloth on the armature with long-lasting results. It really isn't too hard to rebuild an alternator, if you can get the parts.
 
   / $Holy Crap$ - Alternator JD 770
  • Thread Starter
#10  
I seriously boubt the alternator is bad. I have never replaced one of these style unless the bearings go bad. Usually any charging problem is the regulator/rectifier. Or you could have a broken wire or connector.


It is seized up.

Thanks,
Bill
 

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