Gleaner M tachometer

John 37A · Jun 22, 2016

I'm getting the combine ready to run wheat but my tachometer won't work at all. It is a diesel with the switch to check ground speed, engine speed and cylinder speed.

I switched the tach and switch with one from a parts machine with no results. How do I check if it's the sensors or the tech itself?

Thanks,
John

JMS/.MN · Jun 22, 2016

Swap the sensor with one from another function that works.

big jt · Jun 23, 2016

Memory serves the sensors are supposed to have about 500 ohm resistance.

Truth be told the tach is nice but by no means a necessity. I ran a M and then a M2 for many years and the tach was intermittent
at best. Only needed the ground speed to work when I put on a Yield Monitor.

jt

centash · Jun 24, 2016

Make sure the sensor is the proper distance from the slotted wheel that turns in
front of it and that the face of it is clean, also check wiring, they seldom give
trouble. The engine speed function is the least important of the four settings...just
adjust the throttle stops for the rated operating speed and drive on. Ben

Gleaner M tachometer

John 37A

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JMS/.MN

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big jt

Well-known Member

centash

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