alternator for 89PT40

[jim riordan]

On my coach one guage shows total output of both alternators. I did not quite understand how they both worked. I repalced both.

Jim Riordan

Gus Rodriguez wrote:

Mike, thank you both for the information. I too am having charging problems. I recently purchased this bird and am new to all of this. I will be asking many
questions in the near future because I have several issues that I would like to address along with a general steep learning curve about Bluebirds. I didn’t think about rebuilding both. I just knew that the one on top of the engine was not working. The other one is putting out 13.2v at idle. The one on the top is a Leece Niville by Prestolite part no. 110-573 stamped 150Amps. I don’t know what the one in the rear is but it appears smaller. Should they both be the same? Also my dc voltage output meter in the dash shows no output at all. The needle is well below zero and does not move. What does the one in the rear power? (engine only?) and is it metered anywhere?

Thank you again for your help.

Gus

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From: WanderlodgeForum@yahoogroups.com [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of
mbulriss
Sent: Friday, March 14, 2008 11:43 AM
To: WanderlodgeForum@yahoogroups.com
Subject: [WanderlodgeForum] Re: alternator for 89PT40

Gus,

I agree with McMahan. According to my rebuild guy here in San Antonio,
you need to change them both at the same time, *especially* if you are
upgrading output. My rebuild guy also told me that the only
difference between the 145(150?)/160 Delco alternators was the
diameter of the front pulley. So if you go the rebuild route you
should be able to get new pulleys to
upgrade to the 160 with the
existing cores. Last time I freshened mine up though, Ogburn's Truck
Parts had new ones on sale for a lower price than I paid to rebuild!
They didn't have the pulleys on them as I recall, so you had to swap
yours. The one under the rear bumper is no big deal to change. The
one under the bed can be a real challenge, Make sure you add all new
belts and seal the floor panel under the bed with new butyl or sealing
tape to prevent fumes from seeping into the bus.

After you fix it, come join us at the Lone Star Birds Rally in April.

Have fun.

Mike Bulriss
1991 WB40 "Texas Minivan"
San Antonio, TX

-- In "WanderlodgeForum%40yahoogroups.com", "Mike McMahan" <mmcmahan@..<WBR>.>
wrote:
>
> Gus, I don't know if the conversion is necessary(but it can't hurt)
> or not but I would probably do both alternators at the
same time. If
> you do the change I would thinkl you had to change both and if you
> repair one I would go ahead and do both at the same time. Mike
> Mcmahan 96 42" Wanderlodge
>
> --- In "WanderlodgeForum%40yahoogroups.com", "Gus Rodriguez"
> wrote:
> >
> > Hello everyone. Can I get some advice on the replacement of an
> > alternator for an 89PT40 8V92T. Should I replace it with the same
> > (150amp) or go with 160amp high output that is said to work well at
> low
> > power settings? Any information is appreciated.
> >
> > Thank you
> >
> > Gus 89PT40 8V92T
> > Houston, Texas
> >
>

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