Engine Temp on an 1850

SpringHollow · Mar 25, 2007

I just received my used 1850 yesterday. So far, I am impressed with the machine. I am so used to conventional tractors that it feels strange to have that visibility, maneuverability, and ease of changing implements. To reinforce that feeling, I then spent hours in the rain switching my brother's tractor from a loader mounted snow plow to a bucket.

I am having one problem. The temperature gauge does not read anything after idling for 10 - 20 minutes and the fan never comes on. I might have a bad sending unit - now I just have to figure out where it is and how to test it. Maybe I am lucky and it is a loose connection.

Also, the engine seems to smoke more than I would have thought it should. How clean burning are these?

Thanks,

Ken

SpringHollow · Mar 25, 2007

Okay, I figured out that the engine pully cools the engine oil radiator. I have not used the hydraulics enough probably to make the fan come on. i still might have a bad sending unit since I have not seen a temperature rise.

ken

Bob999 · Mar 25, 2007

ksimolo said:
Okay, I figured out that the engine pully cools the engine oil radiator. I have not used the hydraulics enough probably to make the fan come on. i still might have a bad sending unit since I have not seen a temperature rise.

ken

I could be a bad sending unit but it also could be an open circuit because of a broken wire, bad connector, or a failure to connect.

Check the continuity from the sending unit to the temperature guage on the dash board, the continuity from the ignition switch to the sending unit, continuity from ignition switch and meter to ground, and availability of power at the sending unit when the ignition switch is on before replacing the sensor.

woodlandfarms · Mar 25, 2007

I believe if you ground the sensor lead the meter should bounce to full or hot. This lets you poormans the guage itself and the wires to the guage.

The probe must be checked with an ohm guage.. Generally easier to replace than test...

I looked through the site and someone once put a probe into the oil tank and set a nice guage on the dash...

I was looking at this

LCD MULTIMETER W/FAHRENHEIT THERMOMETER | All Electronics Corp - Parts, Supplies and Components

Wondering if it could be broken apart and pieced into the dash. It has both temperature and voltage, and would handle any signal you send to it... Could create one gauge that with a switch reads your voltage / amperage draw / and any temp reading you could think of...

Carl

AltavistaLawn · Mar 25, 2007

When my temp sensor died, thats how I found it, by grounding the lead. If u look at the left side of the engine , at the dip stick. The up under the engine oil cooler, there is a sensor in there, mounted vertically; pull off the lead, and ground it with th eswitch on it should peg the gauge.

You have to get the sensor from Deutz, and its pricey.

SpringHollow · Mar 25, 2007

Thanks everyone! I will take a look at it tomorrow. Might have something going on that affects more than one thing - ex., bad ground. Something may have happened during shipping. My hydraulic cooling fan is not coming on either even though the 20 gallon hydraulic tank is hot to the touch.

I do not want anyone to get the wrong impression - this is a used tractor and these are small problems. I really like the tractor! So much more stable than a CUT even with the duals not on!!!

Ken

MossRoad · Mar 25, 2007

You could also wire the cooling fan to be on all the time until you find the problem. That way you will be more sure of avoiding an overheat.

AltavistaLawn · Mar 26, 2007

MossRoad said:
You could also wire the cooling fan to be on all the time until you find the problem. That way you will be more sure of avoiding an overheat.

Thats what I'd do. At the rear of the hood, there are 4 wires. Two for the fan, and two for that annoying flashing light. Unhook the light, plug in the fan there, and it will run all the time while the switch is on.

Charlie_Iliff · Mar 26, 2007

ksimolo said:
My hydraulic cooling fan is not coming on either even though the 20 gallon hydraulic tank is hot to the touch.

Ken:
On my 1845, I knocked a wire off the temperature sender for the cooling fan. My recollection is that it's inside the "frame" (body) right side of the engine compartment. It's hard to see.
Ultimately, I put a new connector on the wire. You may find places where the 1/4" tab connectors are tired. A nunber of mine had a bit loo little wire, so tension on the connectors, which failed after a while, exposure to vibration, water, etc.