These pumps wear out. The shaft wears and if bad enough wears into the housing. Have replaced many shafts over the years and usually the housing is ok even where the shaft is worn. End clearance is critical of course, I start with out any gasket, if it binds at all I add one shim gasket at a time. Covers on the H don't usually warp much but can easily be trued up with a flat surface and sandpaper. Also, look at the relief valve. If it is worn or wrong one installed. Over the years the parts some how got mixed up, and a lot of relief valve plungers were installed during routine overhauls that is incorrect. The correct one is straight all the way from one end to the other. Wrong one has a slightly smaller diameter with shoulder . That one will run about 45 psi and correct one will run about 65 to 70 psi full throttle and good engine. First M I ever overhauled at dealership , customer was complaining about oil pressure and oil consumption as dealer had done a ring job on it winter before. It had that wrong regulator valve in it and of course it got new sleeves then but was an inframe overhaul so no new cam bearings or other goodies. I found several more of them in both the H's nd M's over the years including my dad's 52 H which is mine now.
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 - Women and Tractors - More Views From the Farmer's Wife - by Teri Burkholder. The top ten reasons why the judges wouldn't let you participate in the stock antique tractor pull: Hey, this is stock! It came with that V8 in it! That "R" on my tires stands for "really old" not radial! Blue gas? We thought it was a pretty color! What wire hooked to my throttle?
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[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.
