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farmer_rob 
Silver Level
Joined: 11 Sep 2009
Location: N.Lancaster ont
Points: 361
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 Topic: 180 temp gauge not working
Posted: 02 Sep 2024 at 9:41pm |
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Like the title says my isn’t working. I have checked the continuity of the sending wire so my question is do i replace the sending unit or guage .
Thanks
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if farming was easy everybody would be doing it
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Jim.ME
Orange Level
Joined: 19 Nov 2016
Location: Maine
Points: 951
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Posted: 03 Sep 2024 at 6:49am |
It is hard to say which needs replacing until you do some checking.
Does the gauge move at all or is it stuck one way or the other?
Do you have power to the gauge?
What happens at the gauge if you remove the wire from the sender and ground the wire?
As for replacing one or the other. The ohm range for both a gauge and sender must match. I don't have a 180's service manual to check, your service manual may give the ohm range for them, which you will need if you want to get a replacement (other than by part number from AGCO). If using aftermarket replacements, I find it as easy to get a matching gauge and sender together in a kit.
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DougG
Orange Level
Joined: 20 Sep 2009
Location: Mo
Points: 8091
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Posted: 03 Sep 2024 at 6:16pm |
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Theres a way to easliy test them - cant remember how tho- ground it out,,
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8070nc
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Joined: 21 Mar 2019
Location: North Carolina
Points: 500
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Posted: 03 Sep 2024 at 6:39pm |
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I think this right. I might have it backwards. If the guage is ok and you take the wire off the sensor it should go full hot. If you ground the wire it should go full cold
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Heds43
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Joined: 03 Sep 2024
Location: Cleveland Oh
Points: 6
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Posted: 03 Sep 2024 at 7:17pm |
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Ok
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ac-mike
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Joined: 14 Sep 2009
Location: Kentucky
Points: 264
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Posted: 04 Sep 2024 at 7:45am |
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On 180 and 185 models I have had problems with air being trapped at the thermostat not allowing water to get to the sending unit. This can also cause the tractor to overheat. Look in radiator to see if water is circulating and feel thermostat housing to see if temperature is same both sides of thermostat. The cure for this is to loosen thermostat housing allowing water to take the place of the air trapped inside. The best cure for this problem is to be sure the thermostat has a small hole to relieve trapped air. I had enough problems with this that I always drill a small hole in thermostat.
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D-12III, 200D, 170G, HD-3, D19D 3pt, D17D High Crop, WD45G p/s, D15IID, D15IIG, D15G IND, 655, (3)WD45D p/s, 700, 816
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farmer_rob
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Joined: 11 Sep 2009
Location: N.Lancaster ont
Points: 361
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Posted: 04 Sep 2024 at 3:46pm |
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Well this morning I unhooked the wire at the sender then grounded that wire and noticed the guage going full hot.
So with that happening I’m thinking I need a new sender. Am I correct?
Thanks in advance
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if farming was easy everybody would be doing it
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Leon n/c AR.
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Joined: 19 Mar 2013
Location: Heber Springs A
Points: 169
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Posted: 04 Sep 2024 at 4:10pm |
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Sounds like you need a new sensor . Leon
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8070nc
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Joined: 21 Mar 2019
Location: North Carolina
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Posted: 04 Sep 2024 at 4:12pm |
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Thats what I would do
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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farmer_rob
Silver Level
Joined: 11 Sep 2009
Location: N.Lancaster ont
Points: 361
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Posted: 04 Sep 2024 at 8:56pm |
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Anyone have the part for that sending unit?
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if farming was easy everybody would be doing it
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KJCHRIS
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Joined: 21 Dec 2015
Location: WC Iowa
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Posted: 04 Sep 2024 at 11:47pm |
Sender #241249. IF your gauge says Allis Chalmers on its face try this OEM number for AC185 & 200 tractors. The AGCO dealer will need to update the number to AGCO. IF your gauge is an aftermarket this sender number may not work with it. I've not seen any 180's that had electric temp gauge, they've had the old tube & bulb type gauges. The 185 & 200 usually have electric gauge. |
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AC 200, CAH, AC185D bareback, AC 180D bareback, D17 III, WF. D17 Blackbar grill, NF. D15 SFW. Case 1175 CAH, Bobcat 543B,
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Don Jr NY
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Joined: 11 Sep 2009
Location: Waterloo NY
Points: 338
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Posted: 05 Sep 2024 at 5:16am |
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To my knowledge the bulb and tube style gauges ended with the D series tractors. All 100 series tractors have the electric gauges. I have 13 of them ranging from the 170 to the 220 and they are all factory original wiring with electric gauges.
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