[AJD] Running temperature

[Bill Salisbury]

Dear Rev. Gerber,

Thanks for your comment on this 420 temperature situation.  I agree with you 
completely.  My next step will be to use the infra red temp gun and find out 
exactly what the actual temp is at various points of the engine and cooling 
system.  The results of that test will dictate the next step.  I suspect, as 
you point out, that the new temp gage is indication incorrectly, or it could 
be the fault of the new thermostat.

Best regards,  Bill Salisbury
----- Original Message ----- 
From: "Rev. Gerber" <drgerber at fuse.net>
To: "'Antique John Deere mailing list'" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Monday, June 02, 2008 12:12 PM
Subject: Re: [AJD] Running temperature


> Bill:  I have several 420s, and have never had one run that cool.  They
> run right at 160-170, or a little higher under load for a prolonged
> period.  What I have run into is some new temperature gauges that are
> not accurate.  I have had a couple that never read correctly, and had to
> change the gauge again and it read more in line with the traditional
> performance of the tractor.  These are no known for running too cool, at
> least not in my experience.  Thermostats could have the same issues as
> the gauge, although I have not had that issue with any of the 420s, but
> have had struggles with automotive thermostats.
>
> Rev. Dr. David R. Gerber
> Mt. Airy United Methodist Church
> 2645 North Bend Rd.
> Cincinnati, OH  45239
> Phone: 513-541-0307
> FAX: 513-541-2575
>
>
> -----Original Message-----
> From: antique-johndeere-bounces at lists.antique-tractor.com
> [mailto:antique-johndeere-bounces at lists.antique-tractor.com] On Behalf
> Of Bill Salisbury
> Sent: Monday, June 02, 2008 7:34 AM
> To: Antique John Deere mailing list
> Subject: Re: [AJD] Running temperature
>
> HI CEE VILL,
>
> Thanks for your information.  I do appreciate your effort.  I still have
> the
> old thermostat and although it seemed to produce the same running temp,
> I
> will check it on the stove to see when it opens.
>
> Regards,  Bill
> ----- Original Message ----- 
> From: "CEE VILL" <cvee60 at hotmail.com>
> To: "Antique John Deere mailing list"
> <antique-johndeere at lists.antique-tractor.com>
> Sent: Sunday, June 01, 2008 9:27 PM
> Subject: Re: [AJD] Running temperature
>
>
>
> The only time that would seem like a problem to me, Bill, is if I wanted
>
> heat from a heater core in winter, or if I was going to run kerosene.
> It
> seems your cooling system is doing a good job.  If you work it hard on a
> 90
> degree day and it runs 20 degrees warmer, you are still in good shape.
> I
> suspect the new thermostat starts to open lower than it is marked.  I
> have
> had to try three of them in years past to get one that would give me
> good
> heat in winter on some trucks and cars.  I have cooked them on the stove
>
> with a candy thermometer in the water to see where they really open.
>
> Charlie V.
>
>> From: salisburyw at comcast.net
>> To: antique-johndeere at lists.antique-tractor.com
>> Date: Sun, 1 Jun 2008 20:41:22 -0400
>> Subject: [AJD] Running temperature
>>
>> HI JD owners,
>>
>> Can you tell me if it is generally normal for a JD 420 cooling system
> to
>> run on the cold side even when working hard?
>>
>> My 420 has a new temp gage and a new 160 degree thermostat.  About the
>
>> highest reading that I ever see is 145 degrees when running.  After
>> shutdown, the temp indicator will rise to about 170 briefly and then
> begin
>> to drop as the engine and cooling system cools.  Even on a hot day
> about
>> the highest reading I ever see is 145.  I have been intending to use
> an
>> infra red heat gun on various parts of the cooling system and radiator
>
>> hoses to see if the temp gage readings are accurate, but have not done
>
>> that yet.  I was intending to do that this weekend, but forgot to take
> the
>> heat gun with me.  I live 120 miles away from the tractor.
>>
>> I welcome your comments.
>>
>> Bill Salisbury living in Virginia
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