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Hitachi Alternator

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jdubner(at)yahoo.com
Guest

Posted: Thu May 31, 2007 6:53 pm Post subject: Hitachi Alternator

Thought I'd update the group on my Hitachi IR alternator situation now

that the problem is behind me (I think 



I removed the alternator from the airplane, clamped it in my bench vise,

hooked up a 12V power supply to provide excitation current, and turned

the rotor with my electric drill.  I was always able to make it start

but there were some "dead spots" as indicated by the changing current

drawn from the excitation power supply which indicated worn brushes.

Sure enough, when I opened it up I found one brush nearly gone.



I don't know how he did it but bless him: George, gmcjetpilot, was able

to tell me a make/model and a Lester number so I was able to order an

inexpensive replacement from rockauto.com.  (It's used in the 1980

Nissan B720 pickup and my replacement was remanufactured by Remy).



Installed in the airplane: ops check good on a ground run.  (Tomorrow

I'll fly it).



After a thorough cleanup I'll replace the brushes and keep the old unit

as a spare since the slip rings, bearings, and everything else looks good.



--

Joe



--------------------------------------------------------------------

Joe Dubner  K7JD  |  523 Cedar Avenue     |  http://www.mail2600.com

Long-EZ 821RP     |  Lewiston, ID  83501  |  +1 208 816-6359

--------------------------------------------------------------------



On 5/10/2007 12:09 PM Joe Dubner wrote:

 	  Quote: 	
		   My O235 Long-EZ has experienced some sort of charging system failure.

 It was intermittent at first but now it does nothing -- I flew home

 battery only.  So I suspect it's time for brush replacement on my

 automotive alternator and I'd like to buy some brushes at the local auto

 parts store.

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mprather(at)spro.net
Guest

Posted: Thu May 31, 2007 7:46 pm Post subject: Hitachi Alternator

Thanks for the update Joe..

Hope you have good luck with the Remy rebuilt unit.

Regards,

Matt-

 	  Quote: 	

 Thought I'd update the group on my Hitachi IR alternator situation now

 that the problem is behind me (I think 

 I removed the alternator from the airplane, clamped it in my bench vise,

 hooked up a 12V power supply to provide excitation current, and turned

 the rotor with my electric drill.  I was always able to make it start

 but there were some "dead spots" as indicated by the changing current

 drawn from the excitation power supply which indicated worn brushes.

 Sure enough, when I opened it up I found one brush nearly gone.

 I don't know how he did it but bless him: George, gmcjetpilot, was able

 to tell me a make/model and a Lester number so I was able to order an

 inexpensive replacement from rockauto.com.  (It's used in the 1980

 Nissan B720 pickup and my replacement was remanufactured by Remy).

 Installed in the airplane: ops check good on a ground run.  (Tomorrow

 I'll fly it).

 After a thorough cleanup I'll replace the brushes and keep the old unit

 as a spare since the slip rings, bearings, and everything else looks good.

 --

 Joe

 --------------------------------------------------------------------

 Joe Dubner  K7JD  |  523 Cedar Avenue     |  http://www.mail2600.com

 Long-EZ 821RP     |  Lewiston, ID  83501  |  +1 208 816-6359

 --------------------------------------------------------------------

 On 5/10/2007 12:09 PM Joe Dubner wrote:

> My O235 Long-EZ has experienced some sort of charging system failure.

> It was intermittent at first but now it does nothing -- I flew home

> battery only.  So I suspect it's time for brush replacement on my

> automotive alternator and I'd like to buy some brushes at the local auto

> parts store.

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

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