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Electric A/C compressor

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=207481
Printed Date: 18 Jul 2025 at 6:44am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: Electric A/C compressor
Posted By: Clay
Subject: Electric A/C compressor
Date Posted: 15 Jul 2025 at 10:56pm
John Deere 4050, [6359t (French) engine], a/c compressor is located on top of the engine between exhaust and the radiator.  No way to relocate it to another area.  Believe me.....if it was possible it would have been moved years ago.
The compressors only last 2 or three years.  Spoke with others with the same problem.  
Alternatives are converting from a Denso to a Sanden compressor. This requires a mounting bracket adapter kit.  
Another idea it to convert to an electric a/c compressor.  Hybrid cars and cars with stop/run engines have electric compressors.
Curious to know if anyone has put an electric a/c compressor on a tractor.  





Replies:
Posted By: Stan R
Date Posted: 16 Jul 2025 at 7:13am
You'd probably need a 100+ amp alternator for that mode. Besides, to go from

-mechanical belt to ac compressor is more efficient

than

-mechanical belt to alternator to electricity to ac compressor.


Posted By: Les Kerf
Date Posted: 16 Jul 2025 at 7:40am
Originally posted by Clay Clay wrote:

... 
Another idea it to convert to an electric a/c compressor.  Hybrid cars and cars with stop/run engines have electric compressors... 

What voltage do the use on those?


Posted By: steve(ill)
Date Posted: 16 Jul 2025 at 7:58am
Most of the "KITS" are 24v and pull something like 90- 100 amps...... 24 x 100 is 2400 WATTS or about 3 HP....

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Like them all, but love the "B"s.


Posted By: Les Kerf
Date Posted: 16 Jul 2025 at 8:57am
Sounds like a 200 amp 24 Volt alternator should suffice


Posted By: Codger
Date Posted: 16 Jul 2025 at 9:57am
If you run that high of capacity alternator at capacity, best force feed it air somehow or it most likely won't last long. A ducted fan forcing air at/through the alternator would probable work, but you'll have to deal with space constraints and packaging. 

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That's All Folks!


Posted By: 8070nc
Date Posted: 16 Jul 2025 at 11:35am
Thats a lot of continuous current. Good opportunity for a fire. Absolutely do it how you want but id put a belt driven compressor on it and call my next case

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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor


Posted By: Clay
Date Posted: 16 Jul 2025 at 3:15pm
I just put in an order for a Sanden A/C Compressor Conversion Kit (AMX10167), $540,  from Abilene Machine.  
Planning to flush the system.  Install compressor , receiver/ dryer $28, expansion valve $20 and synthetic Ester Oil $14.  




Posted By: DrAllis
Date Posted: 16 Jul 2025 at 3:23pm
I'm not sure of why so many failures?? Is it possible that you need to fabricate a simple tin heat shield to reduce exhaust system heat onto the A/C compressor ?? That surely wouldn't be too difficult or costly. This heat shield could also maybe help direct radiator fan blast air towards  the A/C compressor to help cool it off some. I dunno. I'm not there looking at it.


Posted By: steve(ill)
Date Posted: 16 Jul 2025 at 4:10pm
Sounds like a plan Clay... and a couple baffles like Dr said and your good to go !

-------

Product Details

Toss that ancient FrigidaireĀ® A6 air conditioning compressor in the scrap heap and bolt on a SandenĀ® unit with this great upgrade kit!

This is a complete kit to retrofit a modern SandenĀ® compressor in place of the massive A6 unit installed from the factory. We recommend replacing the receiver drier, expansion valve or orifice tube, and cleaning or replacing the condenser for maximum performance and longevity.

The advantages of the Sanden type compressors are many, but include:

No vibration

Better cooling performance

Longer service life

Robs less engine power

As a family-owned company, Abilene Machine has been providing farmers with dependable agricultural replacement parts for over 40 years. Whether you need to make a repair or perform scheduled maintenance, you can depend on us to help keep your equipment in great working condition. And if you have any questions, please do not hesitate to contact our knowledgeable sales staff. We have over 100 years of combined ag parts sales experience to assist you.



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Like them all, but love the "B"s.


Posted By: jaybmiller
Date Posted: 16 Jul 2025 at 5:31pm
whatever you do, adding a heat shield is a GREAT  mustdo !!

not just a single slab of tin, but 2 separated by a 1/2" air gap, 3 if you've got room.
adding a duct or dedicated cooling fan will also be a BIG help !!



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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water


Posted By: Clay
Date Posted: 16 Jul 2025 at 8:30pm
There are a few heat deflectors in place.  This configuration was NOT one of John Deere's better ideas.
  I know several people who have the same problem with the same model.



Posted By: Clay
Date Posted: 16 Jul 2025 at 8:32pm
Thanks Dr. Allis.  As usual, you have the right idea.


Posted By: Clay
Date Posted: 16 Jul 2025 at 8:38pm
Originally posted by jaybmiller jaybmiller wrote:

whatever you do, adding a heat shield is a GREAT  mustdo !!

not just a single slab of tin, but 2 separated by a 1/2" air gap, 3 if you've got room.
adding a duct or dedicated cooling fan will also be a BIG help !!

A duct is a great idea.  Ducts work great on aircraft engines to direct cool air onto various  engine accessories.  I think I know where I can lay my hands on some SCAT tubing.


Posted By: DrAllis
Date Posted: 16 Jul 2025 at 9:08pm
I have no idea what vintage/age this particular tractor is. Does it happen to have what I call an R-4 type Delco A/C compressor like from the mid/late 1980's ?? cause they were junk.


Posted By: steve(ill)
Date Posted: 16 Jul 2025 at 9:35pm
i would modify the side panel or cut and louver the hood if needed to get a fresh air duct from outside to the back or top of the compressor... Let the radiator fan pull the cooler air thru instead of over the hot engine.... assuming you have a pusher fan.

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Like them all, but love the "B"s.


Posted By: Clay
Date Posted: 17 Jul 2025 at 7:15am
Originally posted by steve(ill) steve(ill) wrote:

i would modify the side panel or cut and louver the hood if needed to get a fresh air duct from outside to the back or top of the compressor... Let the radiator fan pull the cooler air thru instead of over the hot engine.... assuming you have a pusher fan.
The fan pull the air through the radiator.


Posted By: Clay
Date Posted: 17 Jul 2025 at 7:18am
Originally posted by DrAllis DrAllis wrote:

I have no idea what vintage/age this particular tractor is. Does it happen to have what I call an R-4 type Delco A/C compressor like from the mid/late 1980's ?? cause they were junk.
[Nippondenso] Denso - 6E171 .


Posted By: DrAllis
Date Posted: 17 Jul 2025 at 8:50pm
OK. I see a picture of it and that is not like an R-4 compressor which GM used.



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