I looked in my service training manual on early magnums. Two different filter bases with a differetn style filter bypass valve but both filter bases are supposed to limit the oil pressure to the filter at 120 psi and filter is rated at 1000 psi. Oil bypassing the the filter is directed right back into the inlet side of the charge pump. Not sure where it joins pump but diagram shows it is after the screen filter down in transmission housing.
I see you busted a filter base so it seems unlikely you would have two bases that the bypass valve would not function. I would do some double checking to make sure there is a outlet from base back to the inlet side of that pump.
The high pressure relief or bypass from the smaller gear pump to oil cooler should not have any effect on the filter. Been many many years since I worked on those magnums and never enough work on them (they were quite trouble free except for getting wrong signals from sending units etc) ti get a lot of experience on the hydraulic problems.
There were several changes made along the way so actual plumbing etc depends on serial number and age of tractor.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - Show Coverage: Journey to Ankeny - by Cindy Ladage. We left Illinois on the first day of July and headed north and west for Ankeny, Iowa. Minus two kids, we traveled light with only the youngest in tow. As long as a pool was at the end of our destination she was easy to please unlike the other two who have a multitude of requirements to travel with mom and dad. Amana Colonies served as a respite where we ate a family style lunch that sustained us with more food than could reasonably fit into our ample physiques. The show at Ankeny
... [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.
