Found that whine in the engine compartment

Started tearing apart the alternator and found this. The ball bearing at the pulley end of the shaft. Seems to be a ball or two short. The bearing assembly self destructed, not being either a shielded or sealed bearing assembly. I'll upgrade to a sealed bearing assembly when I rebuild the alternator. Diodes are on their way from Auto Electric Service, VA.

Less than 350 hours on this alternator!

Interesting to see the RedHill Bearing made in England. http://www.rhtrd.com/?gclid=CN-4pumqhZACFScvQQod90hAqg

Must've been the low bidder...

The only whine associated with my MV comes from the kitchen.

Wreckerman, My whine comes from the nieghbors. So maybe it isnt as audible as yours?

readyman said:

Started tearing apart the alternator and found this. The ball bearing at the pulley end of the shaft. Seems to be a ball or two short. The bearing assembly self destructed, not being either a shielded or sealed bearing assembly. I'll upgrade to a sealed bearing assembly when I rebuild the alternator. Diodes are on their way from Auto Electric Service, VA.

Less than 350 hours on this alternator!

Click to expand...

Does someone have all the info, part numbers etc. to re-building a deuce alternator?

RE: Re: Found that whine in the engine compartment

Mike, there's a manual here in the TM section and the Leece Neville/Prestolite website has p/n's. Readyman, is it easy to get the rear gearing out? What did you yse to do it?

RE: Re: Found that whine in the engine compartment

The bearing is a loose press fit to the housing, it came out easy with a hammer and a piece of wood.

I wouldn't even try to rebuild these alts, but there is no upgrade replacement. Leece Neville/Prestolite reps said they took down the assembly line early this year, said there is no equivilent model. Repair shops say "haven't seen one of those in 10-15 years". And parts? The diode model number doesn't even show up in replacement charts its so old. The bearings are off the shelf common tho.
We have to find the current version model of these alternators, seems the 7-1/4 mounting distance is the problem.

Well, the deuce alternator saga continues. Been deadlined since Nov.
Replaced the alt. bearings, that's no problem, still common bearings.

Looking at the metal corrosion and seals, I decided to paint all the housing and any exposed metal, pulley, etc. Beefed up shaft seals. Kinda makes sense if this truck is supposed to be 'fording' capable.
Took a while, but eventually sourced and got in replacement diodes (Chinese)...(?)
Triple checked all the resistances of windings, stator, AOK.
Put it all back together and nothin, must be the internal regulator.
After calling around I can't find the internal regulator's anywhere. Lot of wasted time and effort so far.

I saw Gamagoat1's post from 1-8-08 about S&S in Schaumburg, IL and getting desperate... thought I'd give em a call. To make a long story short - a new AMA 5104 UT came in the next day. BTW all those bare metal parts are already painted and zinc chromated, like they should be.