Posted by JD Seller on January 06, 2013 at 21:23:53 from (208.126.196.144):
I decided to have a quite day working in my shop. Turned the computer off and turned my old record player on. I stacked a stack of old but good music records on it and worked the day away listening to some good tunes.
I am still waiting on the gear I need for my JD 4320 transmission. So I decided to tackle the main hydraulic pump today. Actually four of them. LOL I had a whole box pallet full of pump parts. So I started out by cleaning up everything. I them took them all apart. I sorted the best parts out for the one I need for the 4320. I overhauled it completely. I ran it on my home made test stand and it checked out fine.
I made this test setup twenty years ago. I took an electric motor with a belt drive system on it that will turn the hydraulic pump at 1500 rpm or 2400 rpm by just changing a belt from one pulley to another. I have a hydraulic tank that holds twenty gallons of HY-guard oil. The tank is above the pump so it acts just like the front reservoir does on the tractors. To test the flow and pressure I just use my flow-rator test equipment. This test setup has saved me the labor of installing a pump to only find out it does not work right or leaks.
The pump I needed for the 4320 went so well I decided to go ahead and make another one out of the parts for a spare or I will sell it as a rebuilt pump. That one worked fine after I had to play with the stroke control valve some. It needed lapped in. It was wanting to stick in the bore some times. I match fitted it and it works fine now.
I then went inside for a late lunch and a short nap. When I came back out I remembered another box of pump parts. So I went and dug them all out.
Long story short. I ended up rebuilding four of the pumps. I then threw out all of the bad parts. I oiled down the good parts and put them in Zip lock bags. That way they are ready to go when ever I need them. I also labeled them and inventoried them in my spare parts shelves by the correct JD part number.
Luckily my hording let me have all the parts I needed to get them working. When good JD Dealer friend was forced out by JD here a few years ago he sold me a bunch of new parts at dealer cost. So I had all the bearing and over haul kits on hand.
The extra three pumps will fit other tractors I have or I will have customers with a bad pump that need to get going right now. So I have some to exchange with them.
A very good day. I enjoyed just working by myself without any distractions. It is amazing what you can get done that way.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
