Combines Return Elevator Sensor

Unit 2, The sensor is just a pot with a pretty heavy metal arm on it, about 1_4" diameter or so. The weight of the arm moves the pot to the minimum value when arm hangs down to the bottom of the return auger tube. There is no spring or anything, just gravity to return the arm. As far as I know, there is no way to make any adjustments on sensitivity. As the arm rides up on the grain in the return auger the bars on the display move to the right. Were you cutting weedy wheat that might have left a build-up of green material on the sensor armIJ Sometimes straw will get caught on it and hang it up. To see if it's working correctly, just remove the sensor and have someone in the cab watch the meter as you move the arm. Mike

Farm Kid2, I can't agree with you. There has to be at least a little tension on that lever. When we were in South Dakota going down a hill the alarm would go off. Hit a bump in the field, the alarm would go off, and we were cutting clean wheat that was not even very heavy. It was not that way at the beginning of the season. When I took the sensor out that day there was absolutely nothing rapped around it that would cause it to hank up. And we did check it by moving it by hand, and it worked okay. K.A.

I've bought two of them as retrofit kits, both of them brand new and they didn't have any sort of spring. Just the weight of the arm keeps it down against the grain. Sometimes they kind of hang up for a while and then drop back down to normal on their own. I've not had to stop and clean one yet. You might be able to change the performance by rotating the sleeve a littleIJ Maybe the auger is making contact when you hit a bumpIJ It does seem strange that they are working differently now than earlier in the season, but I'm guessing it has something to do with the crop or the machine settings, not a faulty sensor.

How is the arm design so that it lifts up when there is stuf in the returnIJ Is it between the auger and the elevartorIJ I have not seen this sencer yet.

Farm Kid2 It has nothing to do with my problem but, if you retrofited this sensor to a 1600 machine what did you use for the monitor display in the cabIJ K.A.

There's a company in Canada called Agtron that made a display specifically for the CIH sensor. They don't have it on their website now, so I guess it wasn't real popular. It has a line of green, then yellow, and then red lights that come on as the arm swings up, but there is no audible alarm. It's actually easier to see than the factory one in the 2188.

On the machines before the 2388 the lower return tube is round. You have to replace that tube (and the flange and the boot that it mounts to) with a new one that has a bulge on one side. The sensor arm is curved and fits between the auger flite and the tube. As it swings upward, the sensor arm swings into the bulge on the tube so that it doesn't hit the auger flite. Kind of hard to explain without seeing the parts.

Can I retro fit a 1996 2188 with a returns volume monitorIJ What are the parts or factory kit numbersIJDo I have to add or change in cab dash componetsIJWiringIJ My parts man gives me the deer in the headlights look,so I need numbers! Thanks for any help

I think that all 2188's can be fitted with the sensor, but it is cheaper if you already have the header height display. I think 1997 machines are ready to go, but that 1996's have a SN break. Ours is a 96 and it fell outside the SN break, but it still had the right display and worked fine. When you plug in the new sensor the computer recognizes it and the return volume display just "appears". I can get you the part numbers, just let me know if you have the header height display like a 2388. Mike

FarmKid2, Yes,I do have the header height display.I can get you the serial n if you need it. Thanks