Removing Hydraulic pump 65 Massey

Is it easy to remove the hydraulic pump on my 65? What should I watch for/watch out for?

Whats the most likely cause of it not working? Besides ice/ water in oil?

Maybe I can repair it without removing? Thanks

The pump is not hard to remove but it takes a hoist and some time to do it. The pump can be removed through the top of the tractor by removing the lift cover under the seat. Before removing the pump tell us what it is doing or not doing and what you have done thus far. No need to go through all that work if it could be something simple to fix through the side covers.

Well it has moisture in the oil as it is milky.

It had hydraulicsthat would abrutly quit until you shut the tractor off for an hour or so then chances are everything would work again. Oil would be still cold.

Now it does nothing, no hydraulics at all. But I'm wondering if bypass is stuck open. When you look through the fill hole there seems to be alot of oil swirling, almost boiling.

I thought it might be ice , but I put a pan heater under it for a whole day then added 2 gals of hot oil but still nothing.

I have scanned the hyd pages pages from my Massey 65 manual. They are located on my photobucket site.

http://s132.photobucket.com/albums/q4/aaronford1/

They are the first images I put up so you will have to look for page 14, go to first page, download, and print. There are 26 pages in all and are in reverse order.

If I recalll correctly, first drain the oil down, pull the PTO shaft, pull the lift cover, remove the driveshaft, pull the pins and lift out the pump. It takes a while but after you do it as many times as I did, you get good at it. I had a control valve oscillator that would spin free which locked the control valve in the open position, jacking the lift arms all the way up and opening the relief on the pump. It would continue to stick until the tractor was shut off, then it would loosen up. Like you said it would work for an hour or so before this would happen. It worked well after I had the oscillator welded.

Later, my draft control would get inadvertently moved causing a no lift condition. Would scare the heck out of me til I figured it out. Now I have it locked in position so I wont bump it.

HTH


Aaron

My Photobucket Site

Were gaining! I pulled the drain plugs and let the oil go along with water and ice.

I lifted the housing cover off, (there was no gasket) pulled the pump out and it was completely froze up! A good 1/4 inch of ice in the bottom!

Upon inspection of the pump I noticed the set screw was missing from the oscillator.I found it in the bottom of the sump. Put it back in place and put the retaining wire on. Spent the rest of the time removing lines and draining oil out of everywhere.

Not sure where all the water came from but may be a combination of things. Used 2 different old Log splitters last summer, and mounted a frontend loader that had sat off for about 8 years. Also the fact that it had no gasket around the housing and some not very tight bolts.

The gear shift rubbers look good so I'll put in a new gasket and fill with new oil tomorrow. Should be good to go.

I think another mistake I made awhile back was to just remove one drain plug instead of two! When I changed oil. So only changed 1/2 the oil.

Somewhere in that manual is where to set the lift and draft levers in order to get them out of the way when you reset the cover.

Was the oscillator tight or did it have slop in it? The slop is what killed me. The factory punched the head to hold it from rotating on the shaft. After as many times as I had pulled the cover looking for this problem, I decided it needed to be welded.

Aaron