Re: hy-pump ford naa

Posted by Alvin n Ms. on January 05, 2004 at 07:59:01 from (68.32.251.2):

In Reply to: hy-pump ford naa posted by mike on January 04, 2004 at 14:38:51:

YOU COULD CLICK ON THIS SITE LAST WEEK AND FIND ANY KIND OF PUMP PARTS. alvinnms|
Oliver Super 55 / 550 hydraulic pump rebuild
This is a detailed buildup of an Oliver Super 55 hydraulic pump. To the best of my knowledge, it should work on an Oliver 550 and a White 2-44 as well.
rning, large graphics.

I bought my Super 55 several years ago and noticed after a while that it never quite did a good job lifting my brushog off the ground. I was doing some maintenance on the hydraulic system and decided to pull the top casting and check out the pump condition since the shop manual troubleshooting diagram seemed to indicate that this might be the problem. When I got the pump out, I found the pump plates were severely scored. I knew I would have to do something about it, but was unsure what to do. All sources for pumps seemed very high. $500-800 was a typical price quoted. I decided to attempt rebuilding the pump.
The pump was manufactured by Vickers. Since I am an Eaton employee, and Eaton purchased Vickers a couple of years ago, it was trivial to get information on this pump. Turns out it's a Vickers vane pump series V120, 3.5GPM @ 1200 rpm.

Rebuild parts and instructions are readily available. The relevant part numbers are Cartridge kit 912058 ($225-290, depends on supplier, call around),
and Seal kit 229236 ($8-9).

I simply called Vickers and asked for the nearest distributor of parts. Motion industries was my local supplier. I called two of them and received two different prices. Definitely call around. The cheapness of the rebuild depends on being able to use everything in your existing pump except the center cartridge and seals. If you need a casting, add at least a $100 each. The condition of the two relevant castings can be seen here and here.

I got one of the guys at the shop to put my castings on the surface grinder and grind the score marks out. Only a few thousandths came off, and this won't affect the pump. The Surface finish should be 16 microinches or 0.4 Ra

When finished, the two sections looked like this and this.

I gathered all my parts and cleaned them all up. This is the contents of the kit I ordered Vickers pump kit. You'll want to assemble these in a nice clean spot. Dirt is the enemy. The first thing to do is install the shaft and bearing like this. Then add your index pins, O ring and pump plate, and VERY important, make sure your plate is installed in the correct direction, or SEVERE damage will result. This is the correct orientation.

Now it's time to add the rotor and vanes. Rotor direction is not important, and vanes should have the rounded edge facing outwards. Then you can reinstall the back pump cover. The spring should be in the center. Do not forget the spring. Without the spring, the pump won't be able to build pressure when starting.

Now install the back O-ring using some petroleum jelly and install the cover plate. Torque the 4 bolts and the pump is rebuilt! Ready to install. Make sure to not tighten the pump adapters until the pump, and inlet/outlet castings are re-installed on the hydraulic casting. This is because the pump is a few thousandths shorter now due to the machining you have probably done. If you follow the directions here, you should be able to rebuild your hydraulic pump for less than $250 or so

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