RE: (ET) Charger bad

[Klein Robert W NPRI <KleinRW Npt NUWC Navy Mil>]

Chris,  Could you please post the McMaster part number on the site.  With 
Mr. Gunn no longer in the businees, I've been trying to find ready 
replacements for these types of things.  If I'm looking then so is 
everyone else.

To All,

If you find a good replacement part please share.

Bob

-----Original Message-----
From: Christopher Zach [mailto:czach computer org] 
Sent: Friday, January 14, 2005 1:20 PM
To: Tim Humphrey
Cc: elec-trak cosmos phy tufts edu
Subject: Re: (ET) Charger bad


Tim Humphrey wrote:
> Well, I noticed that my Landis controller was cycling quite 
> frequently. I checked the "level" gauge and it was right on the line 
> between green and white while on charge. The charger was outputting 
> about 39.5 volts, each batt is at around 6.5 volts.  I put a pair on 
> my 12 volt charger and they immediately started pulling 13 amps so I 
> figure they are quite low.

Check the diodes as well, but it's probably the capacitor. Not a big deal 
to replace; my McMaster one is working perfectly.

Chris


> 
> I say about, because I was using a cheap analog voltmeter.
> 
> So... I took the charger out of the tractor last nite, (what a job).
> 
> My plans are to get a new capacitor, based on what I remember from 
> reading posts on this list.
> 
> On the bench, with no load, the charger puts out about 32v, without 
> the cap, and 40 with the cap. I seem to recall that it should be more 
> like 45 with the cap, thus my reason for replacing it. Both diodes 
> check good even though they look like their 30 yrs old
> 
> Mine happens to be the 4uf cap.
> 
> While re-assembling the charger into the tractor, I plan to reconnect 
> the connections with a connector instead of terminal lugs. Any 
> suggestions?
> 
> I have to replace every bolt I touched, which is par.
> 
> Kind of ironic, ain't it Bob....
> 
> 




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