General Electric air brake information request.

Howard Wise · **Posted:** Fri Jan 02, 2015 9:19 pm

General Electric locomotive models U25 and U28 were equipped with a wheel slip panel (17FM190A) that activated a valve (SSBV) which caused a quick application and release of the locomotive independent brake during wheel slip. The SSBV valve was part of the 26-L brake system applied to these locomotives. Does anyone on the list have an air brake piping diagram for early GE's that shows the SSBV? I would gladly pay a reasonable amount for a copy. I have operators manuals for these locomotives and while they do show some of the parts, they do not have piping diagrams. This information is requested for the SP9010 project.

Thanks much for any help
Howard Wise
SP9010 Restoration Project
http://sp9010.ncry.org

Loco112 · **Posted:** Sat Jan 03, 2015 2:33 am

I would also be interested in a copy of that, if it surfaces.

I don't have much info from that late time period,but I'd offer to trade you for the copy.
I might have something in a WABCO 26-L booklet that could be useful to the poster and to whomever replies, just ask and I'll see if I can dig something up that you can use.

Loco112

pwkrueger · **Joined:** Fri Feb 26, 2010 11:46 pm **Posts:** 72

We have some U25B documents in our collections. I'll see if I can dig them up and look for the air brake piping diagram. If not, we'd be interested in a copy also if you find one.

Paul

Paul Krueger
Secretary
Cascade Rail Foundation
http://www.milwelectric.org

pwkrueger · **Joined:** Fri Feb 26, 2010 11:46 pm **Posts:** 72

Howard, is this what you need?

Here is a photo of the air brake piping diagram from a U25B manual.
https://www.flickr.com/photos/11269501@N07/16002208268/

Here is a photo of the air brake piping diagram from a U28B manual.
https://www.flickr.com/photos/11269501@N07/15567260374/

The SSBV valve is shown just left of center.

If this is what you are looking for, I should be able to scan it for you later this week.

Paul

Paul Krueger
Secretary
Cascade Rail Foundation
http://www.milwelectric.org

Howard Wise · **Posted:** Sat Jan 03, 2015 9:07 pm

Hi Paul

Yes, they both have the SSBV valve so either one would be great. I appreciate your help. I will PM you with my email address.

It looks like your U-boat is nearing its new home. I'm glad to see it going back up north.

Regards

Howard

pwkrueger · **Joined:** Fri Feb 26, 2010 11:46 pm **Posts:** 72

The air brake piping diagram can be found on in section AE-1 of the U25B Instruction Manual.

You can find it on the Cascade Rail Foundation archive website here: http://www.pnrarchive.org/sites/CRF/U25 ... Items.aspx

The other sections of the air equipment tab are there too.

These are scanned from a SP U25B manual.

Howard, I hope this helps with the 9010 Project. We are happy to be of assistance.

Paul

Paul Krueger
Secretary
Cascade Rail Foundation
"Remembering the Milwaukee Road in Washington"
http://www.milwelectric.org

Howard Wise · **Posted:** Tue Jan 06, 2015 10:55 pm

Thanks Paul. Your help and that of others who responded is greatly appreciated.

Howard Wise
http://sp9010.ncry.org