In Frame rebuild, Pistons, Liners, lower bearings, and rebuilt head. 40 psi oil at idle. Verified port from oil pump to rocker assembly clear. Only small amount of oil to rocker assembly when running. Had to run copper line from oil sensor port to the end of the rocker assembly to get better flow. Works, but not like I wanted. The only thing I can figure is that the cam bearing is worn allowing too much oil to weep by so it never makes it to the top. The funny thing is that the tractor has been running with minimal oil to the rockers for years. I just never noticed until I ran it without the valve cover. I really don't want to have to split the tractor to get at the cam. Any useful advise is welcome.
- Thread starter 67 4020
- Start date
I keep getting this mesg "We are sorry, your post contained one or more words that are restricted due to either YT User Community standards or are common indicators of spamming, cracking, or spambot activity. This was most likely accidental but for obvious reasons, the list of such words cannot be published. Please press back arrow and remove any obvious words or unusual character sequences that would not normally occur in speech."
Does the rocker arm have the rubber plugs or the "top hat" type steel plug? The rubber plugs get hard and the rear one can move in and plug oil hole in the shaft. Our 4020 had sticking valves do to this. If you can remember did the shaft have cotter pins in the ends of it, cotter pins mean rubber plugs. The old one come out easier then the new ones going in.
No, I didn't know it was an issue till I got it running. That's why I checked it with air. If it was installed improperly or partially spun then it's been that way for years. I did the In-Frame because of poor starting and lots of blow by. I've been hoping I wouldn't have to split it. The external line I ran is oiling better, but not perfect. I've heard of this issue on several tractors. Thought I might be missing something. Wish someone had the magic answer. But it's looking like I'll have to take it completely apart.
Glen D Anderson
Member
I can't imagine the factory oiling circuit, even with new & properly indexed cam bearings, providing as good of flow as your aux. feed line.
Can you define "not happy" with respect to the oil pattern coming from the rockers?
IMO as long as there are no rocker arms that are completely dry & there is at least some oil dripping off the top off each one that should be good enough?
Can you define "not happy" with respect to the oil pattern coming from the rockers?
IMO as long as there are no rocker arms that are completely dry & there is at least some oil dripping off the top off each one that should be good enough?
M-MAN
Well-known Member
- Location
- Bostic, NC
Can't help much with your issue as it's
been too long since I have been in to one
of those. I don't remember ever having one
that produced an abundance at the rockers.
As long as they are wet and you get a drip
now and then they are fine.
Looks like you went a little overboard on
the line. Back in the day we added those to
automobile engines from the 50's fairly
often due to passages getting clogged. We
used lines the same size as the plastic one
you have in the pic.
been too long since I have been in to one
of those. I don't remember ever having one
that produced an abundance at the rockers.
As long as they are wet and you get a drip
now and then they are fine.
Looks like you went a little overboard on
the line. Back in the day we added those to
automobile engines from the 50's fairly
often due to passages getting clogged. We
used lines the same size as the plastic one
you have in the pic.
Similar threads
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.
Copyright © 1997-2024 Yesterday's Tractor Co.
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.
Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy