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water temp gauge 101

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=189511
Printed Date: 19 Dec 2025 at 11:22am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: water temp gauge 101
Posted By: jeickman01
Subject: water temp gauge 101
Date Posted: 15 Jul 2022 at 4:52pm
So I have removed the instrument cluster on my D17 III and replaced all the gauges.  Guess I didn't do a good enough job of photographing the all the back side wiring connections.  Temp gauge is not reading.  Is there a hot lead that needs to be connected to one of the terminals?  Don't see this in any wiring diagram in the I & T manual.



Replies:
Posted By: DrAllis
Date Posted: 15 Jul 2022 at 5:06pm
You won't find the wiring diagram showing the temp gauge because it isn't electric. All D-17 tractors used a mechanical gauge with a mercury filled bulb.


Posted By: DSeries4
Date Posted: 15 Jul 2022 at 9:07pm
Originally posted by DrAllis DrAllis wrote:

You won't find the wiring diagram showing the temp gauge because it isn't electric. All D-17 tractors used a mechanical gauge with a mercury filled bulb.


x2!


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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080


Posted By: jeickman01
Date Posted: 16 Jul 2022 at 9:14am
Thanks for quick help on this.  When I cut the lead on the old one i thought it was copper wire but I now see that it is a capillary tube.  I don't think that I kinked this on the new one and I know that the bulb on the new one is in contact with the coolant so I must have a bad gauge right out of the box.  Wanted to use a repro with the Allis Chalmers labeling but may have to resort to a higher quality aftermarket.


Posted By: AC720Man
Date Posted: 17 Jul 2022 at 2:02pm
AGCO gauge isn’t that much more expensive and it’s a good quality gauge. Most aftermarket gauges don’t always look original and there is nothing worse than a gauge that not only reads incorrectly but also looks incorrect. My D17 I recently purchased has a auto temperature gauge and I can’t wait to get rid of it for both of those reasons. New AGCO gauge is ready waiting to be installed after a paint job.

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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD



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