HD5G Cooling System: Overflow tank?
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=192375
Printed Date: 23 Nov 2024 at 9:55pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: HD5G Cooling System: Overflow tank?
Posted By: Les Kerf
Subject: HD5G Cooling System: Overflow tank?
Date Posted: 15 Dec 2022 at 4:34am
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Is it practical to add a coolant recovery tank to a stock HD5G 2-71 Detroit Diesel? What, if any, modifications would be needed? |
Replies:
Posted By: DMiller
Date Posted: 15 Dec 2022 at 6:53am
| Just have to locate the bottle properly and find a comparable later model semi radiator cap that will allow the return from the tank to radiator as cools. Top lip of Radiator cap boss has to seal tight as the old units did not as were not designed for recovery tanks. |
Posted By: Codger
Date Posted: 15 Dec 2022 at 9:16am
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Is this really necessary to do on an older unit? The coolant bottles were installed to downsize the radiators by the OEM's to both lessen weight and $$$ to build the machine. If your cooling system is maintained properly there really isn't a need. Not a bad idea regardless, but no real benefit either. ------------- That's All Folks! |
Posted By: Coke-in-MN
Date Posted: 15 Dec 2022 at 9:07pm
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HD5 is not a pressure system . it's open to the atmosphere - with a overflow tube below the radiator cap . First you would need to change the fill neck ,cap area of radiator to allow flow from it to the bottle , then a cap that allows revers flow by vacuum back to radiator . Next is the question of WHY ? ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: Les Kerf
Date Posted: 16 Dec 2022 at 8:14am
It would be difficult to correctly describe this radiator as having been "maintained properly" by the previous owners  Thanks everyone for the helpful input  |
Codger wrote:Posted By: Codger
Date Posted: 16 Dec 2022 at 10:33am
Don't I understand..... ------------- That's All Folks! |
Posted By: Coke-in-MN
Date Posted: 21 Dec 2022 at 7:34pm
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On a HD5B I had - I needed it on a job and waiting for a radiator to be repaired I put a radiator from a 49 Chev pickup into machine - I was a 8 pound pressure cap on radiator and it worked in bolting into machine - only problem was size of cooling area was not enough to prevent overheating under heavy load - at full throttle the hear gauge moved up quickly under load . I got the job done but had to watch close on where heat was , with a larger core it probably would have worked but the 6 cyl gas engine evidently doesn't produce the heat of a 2-71 engine even though it is a lot less cubic inches . ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |