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Windom, MN | Dad just purchased an 873 bobcat to move snow and general farm duties. We have owned bobcats for years, but only the little ones. The one we used for ages is a 440B with an 18 horse gas engine, so this is a completely different animal.
Anyway, dad was using it today and the temp light came on. The way he described it to me was the red temp light was on and it started beeping. he was looking for the radiator and a place to put coolant in but couldn't find it so he talked to me. I told him it probably has a Deutz engine, but I know nothing about the Deutz engines in bobcats.
I went and looked at it, and sure enough it is a Deutz engine. My understanding is there isn't any coolant in these engines? It's all oil cooled and the oil runs through a radiator.
I was not dressed to really take a look at it today, but the little I did look it appears that on top by the screen there is a radiator that you can move and underneath there is another radiator. it looks like there is some dirt stuck in it, but it's not the worst I've ever seen. Then I bet there is a fan somewhere in there, is there a way to look at it to see if it's turning? again, was somewhat clean and didn't really want to crawl all over it looking for an access door. Also, is this fan run by a belt or is it electric?
So I guess my question is where to start. I obviously will blow out the radiator real good, but if it continues to overheat what is the next step? It has about 2600 hours, so is there anything that needs to be done now maintenance wise? I don't have a book, long gone, so I'm a little blind when it comes to this machine. thanks for any replies.
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| Oil cooled should be a belt driven fan and 90 degree gear box for fan for oil cooler. Those engines have a timing belt with a 2000 hour service interval. If it breaks it can crash the engine. |
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| They are cooled by engine oil. That's all I know. |
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NC KS | The fan if it is working will shoot a good volume of air above rear tire on each side. Make sure screen above coolers along with the coolers themselves are clean.
If fan isn't working, they are belt driven with a 90 degree gearbox.
In my opinion, the 873 is one of the best Bobcat ever made. |
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east central NE. | Not sure if the Deutz engine in the Bob cat is the same as for the power units on irrgation wells, but mice was the worst enemy for them. They loved to build nest on top of the oil cooler in the air duct system. There should be a fan that blows air through a air passage that blows past the cylinders and through the oil cooler. Should be a cover that snaps off the top to get at it to clean. Like I said , could be different for the skid loaders. |
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Washington Co Ks | I don't know about a Deutz in a Bobcat but I had one in a combine once. Keep it clean. Check the fins on the cylinders. I thought I kept mine clean but I guess not clean enough. I paid most attention to the radiators and there was some bean dust build up in the cylinder fins. It got hot and broke two cylinders. They are very expensive to work on. I was told that they are a swearing engine. You either swear by them or swear at them. |
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NW Washington | The fan blades can wear out and not push enough air too. Here is an old NAT thread on the Deutz Air Diesels and some other stuff....
https://talk.newagtalk.com/FORUMS/thread-view.asp?tid=316249&Display... |
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Northern CA | There is probably built up debris in the corner of one of the cylinders and that is causing the over heating. Is it a head temp indicator or oil temp? We have many Duetz engines. Most all have head temp as the light or shut down trigger |
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NC KS | The last 4 posters are thinking of the air cooled Duetz. Yours is oil cooled, totally different. You do not have the fins they are talking about. Yours looks like a normal engine except it has oil where most engines have water-antifreeze.
Edited by Kelly 7/31/2017 06:25
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Windom, MN | Thanks for all the help, however it was misdiagnosed by my dad. Turns out it is the low oil pressure light, not the temp light.
Hopefully we aren't looking at a new engine... |
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Windom, MN | Update:
Had a tech out today and he said the oil pressure is great! Bad sending unit, so thankful it's nothing too huge.
Thanks again for all the replies. |
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Deutz Engine in a Bobcat Questions
