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Lars(wi) 
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Joined: 14 Sep 2009
Location: Permian Basin
Points: 8025
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 Topic: Axle temp sending unit
Posted: 30 Nov 2021 at 8:41pm |
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The electrical wire blade connector broke off of the axle temp sending unit. The center terminal is still good. Can I run a ground to that wire that’s supposed to plug into that blade, and thus the gauge should work, correct?
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 33854
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Posted: 01 Dec 2021 at 12:23am |
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Only if you want full sweep of that gauge all the time. Temp Senders are a variable resistance based against a temperature range not a hard ground.
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Lars(wi)
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Joined: 14 Sep 2009
Location: Permian Basin
Points: 8025
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Posted: 01 Dec 2021 at 5:05am |
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This one is a two wire sending unit. It has the blade terminal(which is broke off), and the threaded stud(which is good).
Was hoping my idea would work, to get by until the next scheduled PM. Then I would change out the sender.
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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24645
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Posted: 01 Dec 2021 at 6:31am |
as a temporary bodge...
take an ohmeter and measure the sensor...probably +-150 ohms ? maybe 100, 250,? something in that region. buy a resistor at radioshack(do they still exist ??) and connect to the sensor wire and ground. this will give a fixed temperature and NOT indicate an overheated axle...
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
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Tbone95
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Joined: 31 Aug 2012
Location: Michigan
Points: 12150
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Posted: 01 Dec 2021 at 6:44am |
 jaybmiller wrote:
as a temporary bodge...
take an ohmeter and measure the sensor...probably +-150 ohms ? maybe 100, 250,? something in that region. buy a resistor at radioshack(do they still exist ??) and connect to the sensor wire and ground. this will give a fixed temperature and NOT indicate an overheated axle...
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im4racin
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Joined: 12 Jun 2017
Location: Garrison ND
Points: 1053
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Posted: 01 Dec 2021 at 10:03am |
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with that little better explanation yes your plan should work. The spade should be a redundant ground for the sensor since it is not directly grounded through the chassis
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 33854
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Posted: 01 Dec 2021 at 6:27pm |
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Missed the two terminal part, Yes adding a ground at times helps.
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