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Tractor Pulling Discussion Forum

JOHN DEERE G

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JOE

05-03-2004 20:03:38




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did some of these come with factory water pumps or are a add on




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a puller

05-04-2004 09:20:25




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 Re: JOHN DEERE G in reply to JOE , 05-03-2004 20:03:38  
I got a question....we have a 52 G w/o one and my cuz has a 53 G w/o one...and my other relitive has a 48 with one. Now did some down south have them while the others up north not? Why is this? thanks alot...a puller



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G-MAN

05-04-2004 10:53:32




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 Re: Re: JOHN DEERE G in reply to a puller, 05-04-2004 09:20:25  
According to my parts book, the w/o water pump/ with water pump serial number break was at G-60700. After that point, all should have had the pump, regardless of where they were shipped, as it became standard equipment. On the same page, there is an attachment listed as part number AF1322R, which is a water-pump/lower tank assembly, used for installing a pump on tractors from G-13000 - the first "GM" - up to G-60669. There was no difference in the radiator core, just the bottom tank was different for mounting the pump, so an earlier non-pump tank or radiator could be installed in a later tractor and vice-versa. Perhaps somebody didn't drain the water on your '52 and '53 and it froze, and the owners decided to install a non-pump tank instead of the correct one, as they were likely cheaper. And perhaps the '48 was used hard and the owner decided to install the pump to keep it cool. It's hard telling on 50-year-old machines. Unless the tractor was worked pretty hard in high ambient temps, they wouldn't overheat, so if the later tractor without wasn't used that hard, it would have been fine.

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WTW How To Tell

05-04-2004 13:20:50




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 Re: Re: Re: JOHN DEERE G in reply to G-MAN, 05-04-2004 10:53:32  
You can tell if the John Deere water pump has been added by looking at the frame support between the frame rails where the fan support bracket bolts to it. This is the support that the bottom radiator pipe passes through. If the water pump has been added to a tractor that originally didn't have it will have to have this support cut out and moved back to the rear to allow clearance for the water pump pulley and air clearance to change belt. The ones I have seen had another support welded right to the back of the remaining ears of the old to move the new one about 1/2" to the rear. Pretty obvious if this support has been moved. The later factory equipped "G's" have this frame support position farther to the rear with the a different fan support bracket that has a step in it. The different fan support bracket was part of the water pump modification also. DW

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G-MAN

05-04-2004 13:41:03




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 Re: Re: Re: Re: JOHN DEERE G in reply to WTW How To Tell, 05-04-2004 13:20:50  
Yep, the frame part number changed at G-60700 too.



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G-MAN

05-04-2004 07:49:44




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 Re: JOHN DEERE G in reply to JOE , 05-03-2004 20:03:38  
The later ones came with water pumps, and they could be retrofitted onto the earlier tractors. There were also aftermarket water pump kits available.



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johndeere_john

05-04-2004 10:45:25




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 Re: Re: JOHN DEERE G in reply to G-MAN, 05-04-2004 07:49:44  
The shortages of the korean war forced deere to use steel raditors, so the water pump was needed to help cool, and yes many were then retro fitted to older models.



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G-MAN

05-04-2004 10:55:32




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 Re: Re: Re: JOHN DEERE G in reply to johndeere_john, 05-04-2004 10:45:25  
That and the fact that the thermosyphon cooling system was at its limit in the "G", even with 13 gallons of coolant. It was known at that time that the 50, 60 and 70 would have water pumps and pressure cooling systems, so Deere also used the late letter tractors to gain some experience with the new cooling system.



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