Farm Equipment - Allis 7060 oil cooler question.

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Allis 7060 oil cooler question.

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=139451
Printed Date: 07 Sep 2025 at 6:21am
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Topic: Allis 7060 oil cooler question.

Posted By: AC 426 power
Subject: Allis 7060 oil cooler question.
Date Posted: 15 Jun 2017 at 6:22pm

I went to replace the gaskets on the elbow that connects to the oil cooler on my 7060 because the side of the elbow that connects to the block was leaking coolant, I also replaced the gasket on the other end of the elbow, everything seemed fine after fix and went to disking and when turning around on end rows the oil pressure light would come on when idling down, I took it back to shop and noticed it was leaking coolant/oil out of bottom of elbow, and then I noticed coolant in bottom of blow bye tube, I drained the oil and it looks fine, not milky or gray, no issues prior to attempting to replace these gaskets, my question is could my issues be caused by the gaskets not sealing right and allowing coolant to get in the oil through the oil cooler?

Replies:

Posted By: MACK
Date Posted: 15 Jun 2017 at 10:08pm

Leak at bottom of elbow, I would guess gasket did not seal. Antifreeze out of blow by tube, I would guess sleeve o ring leaking. Pull blow by tube off valve cover. If it has white milky stuff in tube, most likely o rings leaking. If just black oil, antifreeze came from cooler. MACK

Posted By: AC 426 power
Date Posted: 16 Jun 2017 at 5:29pm

MACK wrote:

Leak at bottom of elbow, I would guess gasket did not seal. Antifreeze out of blow by tube, I would guess sleeve o ring leaking. Pull blow by tube off valve cover. If it has white milky stuff in tube, most likely o rings leaking. If just black oil, antifreeze came from cooler. MACK

Thanks MACK, yeah it's got milky crap on the valve cover side of the blow by tube as well, think a full rebuild is in order?

Posted By: tbran
Date Posted: 16 Jun 2017 at 9:41pm

I would pull the pan and the valve cover - pump up the radiator to about psi and see where the water is coming from before doing anything. Suspect orings or electrolysis - but have seen plug in the head seeping on rare occasion.

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: SteveM C/IL
Date Posted: 16 Jun 2017 at 10:41pm

Yep,pull the pan and valve cover and pump it up so you know just where the problem is.