[AT] PTO pump on ebay

[John Wilkens]

Well doggon!  Why didn't I think of the leather on the piston!   I 
guess that solves the mystery for me.  Thanks for sticking with me on 
this!!    John W.



At 06:52 PM 01/02/2007, you wrote:
>John, If anything John Deere engineers were smart and kept things 
>simple. The air came from the outside of course thru the piston 
>inside the pump body. There is a leather cup that goes around the 
>piston and is sorta upside down so that as the piston is on the 
>compression stroke air is forced by the check valve and out the 
>hose. On the up stroke or intake the ball check valve closes to 
>retain what was pumped and the cylinder fills with "new" air for the 
>next compression. Two checks of sorts, the ball check and the 
>leather cup retaining plate.
>As far a the pump on e-Bay, I think it's ok as the ball check is 
>inside the "pipe" fitting which really is the ball check body and a 
>spud for the hose to hook to.
>Glad you got what you need. Regards,  JG
>----- Original Message ----- From: "John Wilkens" <jwilkens at eoni.com>
>To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
>Sent: Tuesday, January 02, 2007 9:26 PM
>Subject: Re: [AT] PTO pump on ebay
>


                    In the wide-open spaces of NE Oregon