Re: Golden Jubillee hydrolic pump

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Posted by Gene on August 03, 2020 at 09:28:28 [URL] [DELETE] :

In Reply to: Re: Golden Jubillee hydrolic pump posted by TheOldHokie on July 30, 2020 at 08:21:08:

I did my vane pump this spring. I spent the $400 for the ring and rotor kit. When I opened the pump the side plates were messed up, I stoned them and got most of the bad parts out. I reassembled to test at that point.
Not really any better,1000 psi and poor performance when hot.

Opened up again, planning to get the side plates more perfect. At that point I found the rotor stuck on the splines of the pump shaft and my hand cut manifold gaskets were a poor match (suction leak). Previous wear of the splines and a new rotor did not match up well. I bought a new pump shaft, stripped the pump down further, pressed the one bearing off and on. The good news was that the hard to find shaft seal stayed in the housing and I simply slid the old shaft out and the new one in. (no leaks!)

Using a large whetstone I got the side plates smoothed up and flat. Reassembled with more accurate gaskets and I put it back on.

I filled pump with oil prior to mounting, but it would not prime and pump. I did the air hose in the dipstick trick, no luck. Finally I cracked the pressure line at the pump while it was running, oil dribbled out, i tightened line and success!

$550 later my vane pump works! 1900 psi and it lifts a heavy load at near idle when hot.

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