TR 95 Trans pressure light - The Combine Forum
 
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post #1 of 6 (permalink) Old 07-07-2019, 10:40 AM Thread Starter
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TR 95 Trans pressure light

Hello again, new question. Does anyone know the location of the trans pressure sensor on a TR 95? Have followed lines from pump to motor and see nothing. The wiring diagram I have does not show either the light in the dash or a sensor. The light and buzzer are on but hydrostat works perfect and seem strong. Thanks

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post #2 of 6 (permalink) Old 07-09-2019, 10:37 AM
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Newer TR's have a high temperature switch on the bottom of the hydraulic reservoir. I do not believe your machine has that switch or any other for temperature or pressure. Only switch I could find was on the the 3208 Cat for high temperature. There is a switch associated with the hydrostat inching pedal but that would not be a high pressure or temperature switch.

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post #3 of 6 (permalink) Old 07-11-2019, 09:53 PM Thread Starter
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Thanks for responding, think I finally found it! It is on the back of the 4 speed manual trans, at least the light goes out when I unhook that wire anyway. Canít think itís sensing much pressure there, will look into it more later. Thanks again
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post #4 of 6 (permalink) Old 07-12-2019, 10:15 AM
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I would ask your dealer tech about this. IDK anything about the TR95, but sounds real similar to my old JD 7720---there was a pressure sensor on the transmission for lube pressure. The tranny had a lube pump built in that circulated oil to the bearings and gears (only worked in forward, not reverse!) The fact that you can disconnect this and the light goes out eliminates wiring problems, so you are left with either the sensor is bad, or the lube pump is not working. I wouldn't run it until you are sure the transmission is getting lube pressure.

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post #5 of 6 (permalink) Old 07-13-2019, 12:32 AM
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You are right. The early TR95 transmission does have an internal pump for oiling. Probably not good to drive without pressure. Pressure sender part number 272537 is NLA. It appears that JD part number AH76862 would also work as New Holland was buying transmissions from Deere for a time. This assumes that the sender is faulty and not the transmission pump.

Last edited by wtw; 07-13-2019 at 09:27 AM.
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post #6 of 6 (permalink) Old 07-13-2019, 10:14 PM Thread Starter
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Thanks, the knowledge/information on this site is amazing! On an almost 40 yr old machine to be able to come up with a cross reference part number is impressive. Very much appreciated. I will get a gauge on there and see whatís happening, wonít be for awhile, haying is the priority right now......if the rain will stay away.
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