D902 Temp Sensor

[Gdubs]

Does anyone know where the temp sensor in a d902 is supposed to run to? And also what it’s function is , since there’s already a temp sensor
in the thermostat housing

I can’t find any schematics for it online.

it’s screwed into the cylinder head, back closest to cylinder 3 and has a blade style connector.

 

[GreensvilleJay]

hmm, what machine is it in ??

 

[Gdubs]

Bobcat mt55

 

[GreensvilleJay]

You'd be best going to a Bobcat forum, as Bobcat designed the wiring and such. maybe the head temp sensor is used as a 'fail safe...engine super hot' sensor ? Maybe an idiot light 'HOT' sensor ? Possible low flow, high heat sensor ??
Really need to hear from a Bobcat MT55 expert......

 

[PoTreeBoy]

Does anyone know where the temp sensor in a d902 is supposed to run to? And also what it’s function is , since there’s already a temp sensor
in the thermostat housing

I can’t find any schematics for it online.

it’s screwed into the cylinder head, back closest to cylinder 3 and has a blade style connector.

On some tractors with glow plug timers, there's a second temp sensor like that that reduces the preheat time when the engine is warm.

Maybe your machine is like that.

 

[Gdubs]

Yeah you’re probably right, I always go here first though because there seems to be more knowledge of this motor in general.

I did just swap out oil pressure sensor, and the threads were stripped, so it isn’t exactly tightening we’ll and leaks oil when running

Any suggestions on that?

 

[GreensvilleJay]

one possible cheat...
tap for NPT version of the sensor ? NPT might be a 'tad' bigger diameter ??

other is to drill/install a 'Helicoil' to use original ( Metric ?) sensor.