Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Discussion Forum

Detroit overheating

Welcome Guest, Log in or Register
Author 
Gary

07-10-2001 14:55:02




Report to Moderator

I have a big bale stakwagon with a 6-71 detroit and a allison trans. the trans. cooler covers almost the complete front of the radiator,in addition a short driveline comes off of the crank to power the hydraulic sytem and a small piece of radiator was removed,also the fan blades shortened to clear the driveline.In this 100 degree weather it often will get the motor running between 200 and 210. My question, is this hot enough to worry a bout the detroit? and is there such a thing as a push type fan that I would be able to mount in front of the cooler to helppush air through? Thanks for your input.

[Log in to Reply]   [No Email]
Bill

07-18-2001 01:29:10




Report to Moderator
 Re: detroit overheating in reply to Gary, 07-10-2001 14:55:02  
Gary: Many things come to mind, I work with diesel electric generaters from 5-500KW. The first thing I do is monitor rad temps. When suspecting over heat problems steps I take are:
> Chemically wash exterior of rad with pressure washer, then inspect condition of cooling fins. Fins faulty replace rad, fins good carry on with inspection.
> Drain a sample of glycol mix, check condition of solution. Is it clean or is it contaminated. Next,never hurts to flush engine/rad with a descalling chemical to loosen up/remove any crud that may be inside restricting flow followed with forward/backward flush with garden hose.
> Check t stat to ensure it is operating properly (what the cracking temp is as well to insure it fully opens).
> Check to see what the condition of your rad cap is, is the sealing disc cracked or even the rad throat may be cracked. Perform a pressure test to ensure these are maintaining operating pressures (13 to 15 lbs).
> What is the condition of your rad hoses, the inside may be coming apart(folding back upon itself) restricting proper flow to/from rad.
> Is the water pump doing its job properly?(whats the flow like?)
> Lastly, how much crud is caked on the outside of the engine block? Again, clean it off chemically.
> If all said and done and problem still persists, one last thing is to run a cooler t stat and make sure your guage package (sending unit and guage are compatable) is working properly and is as accurate as can be.
> Note: Maybe a 60/40 mix maybe better suited for your climate keeping in mind that glycol changes the boiling point.
Bill

[Log in to Reply]  [No Email]
Tom

07-11-2001 17:49:18




Report to Moderator
 Re: detroit overheating in reply to Gary, 07-10-2001 14:55:02  
I have forgotten most of what little I knew about GM diesels as it was quite a while ago I worked on them. 210 degrees doesn't sound dangerous to me though, but it is getting up there. What is the oil temp. Find out and keep it below the max recomended for the oil. This is just as important as water temp.



[Log in to Reply]  [No Email]
Greg D.

07-10-2001 19:38:02




Report to Moderator
 Re: detroit overheating in reply to Gary, 07-10-2001 14:55:02  
For what it`s worth I would say you are at the extreme edge of a melt down!!!!! ! Rule of thumb for MAXIMUM operating temp is 100 degrees over ambient. With all the places on a Detroit to drive accesories from, why are you running a pump drive off the crank to interfere with the fan and radiator?? Is the radiator large enough for the system capacity to cool? If your fan has been altered to fit somewhere, throw it out and find the correct one with blades in good shape. Are you maving enough air across the radiator? If you don`t have shrouds around the fan to ensure it draws air through the radiator instead of around it, it won`t work. Is your trans or hydraulic cooler adding heat to your radiator?? If you think it is, move them and install an electric fan on them instead of drawing hot air through the radiator to further heat the coolant. Do not run any more anti-freeze in your system than necessary. a 50/50 mix is not the ideal set up. Anti-freeze is oil based and doesn`t dissipate heat the way water will. Run enough anti-freeze to first prevent corrosion, and to protect just enough for your ambient temp. If your ambient temp never gets below say 30, like here at my place,why run a mix to protect to -50????? !!!! Are you running at the correct R.P.M.? Are you running an injector of the proper size and cam timing to match? You can overspeed the fan should it not be capable of drawing enough air through. What is temp drop from the top tank of radiator as compared to the bottom tank???? Simpe overheat problems sometimes get complicated to solve!!! Hope any of this helps. Good Luck

[Log in to Reply]  [No Email]
Burrhead

07-12-2001 18:23:28




Report to Moderator
 Re: Re: detroit overheating in reply to Greg D., 07-10-2001 19:38:02  
That's right Greg those 71 series were notorious for cracking the heads from 195 degrees on up.

I would imagine that if it's been at 210 a time or 2 the head is fixing to come apart or it's gonna gald a piston/jerk a sleeve.



[Log in to Reply]  [No Email]
Alvin

07-10-2001 19:27:01




Report to Moderator
 Re: detroit overheating in reply to Gary, 07-10-2001 14:55:02  
the first thing I would do is take a air hose and blow the dust and chaff out of the cooler and radiator and between the two. Those engines have to be worked pretty hard before they over heat, from my experence with detroit engines.



[Log in to Reply]  [No Email]
Farmer

07-10-2001 20:33:29




Report to Moderator
 Re: Re: detroit overheating in reply to Alvin, 07-10-2001 19:27:01  
My 860 Massey Combine has a V* diesel and started overheating. I blew out the rad, checked the thermostats, and check my antifreeze strength. Nothing helped. So I pulled the rad ( Way big Job) and took it to a rad shop. The fins were corroded and it was not worth repairing. $1000 Canadian ( $600 US) later I put in my new rad and no more trouble.This could be a similar situation.



[Log in to Reply]  [No Email]
Dick (IL)

07-11-2001 14:46:32




Report to Moderator
 Re: Re: Re: detroit overheating in reply to Farmer, 07-10-2001 20:33:29  
Euclid TS24 scrapers (now Terex) had 671 Detroits
as pusher engines. If I'm not mistaken they used push fans instead of pull fans. They may help you but may not cure the root problem which has already been adequately talked about.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
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 ]

Home  |  Forums


Copyright © 1997-2023 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