Y6b question, Wortington SA, function

[nw-modeling-list at nwhs.org]

Hello Frank,
 
thanks for your kind answer!
 
In Germany there is a lot of literature regarding every single part of  
locomotives. Baker valve gear and Timken running gear - all are published  well in 
spite those parts weren't in common use here. But I  regret - no detailed 
disription available of that Worthington SA - pump.
 
Thus all my hope then is the expertise of Ed King (or any other  steamer who 
worked on that subject)?
 
Best regards
 
Wulf-Dieter

Germany
Email:  WDHprivat at aol.com

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