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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Overheating problem.

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old

04-14-2006 13:55:58




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I have this HG crawler with the Oliver 60 engine in it. It runs good and the temp gauge never reads that its getting hot but today when I was running it I went to shut it down and it dieseled bad and when it did stop turning over the radiator was steaming so I know it was hot. It has a new water pump on it, the cooling system has been flushed and the radiator is clean as far as the fins. What else could be wrong with it. The fan is also spinning real good.
Thanks

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noncompos

04-16-2006 19:11:56




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 Re: Overheating problem. in reply to old, 04-14-2006 13:55:58  
"Mannual sez must have thermostat"...new one on me, but you live and learn. I hate to say this, but if it was running cool before, without a thermostat, trouble must be something else. If thermostat isn"t the cure, try running for awhile, sitting still, to see if heats; if stays cool with no engine load, could be combustion gases getting into water only under heavy engine loads. If can see radiator tubes thru filler, check after dark with good light; could be scaled enough (if you have hard water) to hold heat in even tho circulation looks OK. Good luck.

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old

04-16-2006 19:17:24




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 Re: Overheating problem. in reply to noncompos, 04-16-2006 19:11:56  
I'm going to order a thermo tomorrow. Could have ordered it saturday but either way it would not get here till tuesday. Hope that works. Ever since I have ahd this engine it has done this to me. Sitting or working it heats up but it hasn't ever had a thermo since I got it.



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EdW

04-15-2006 15:27:00




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 Re: Overheating problem. in reply to old, 04-14-2006 13:55:58  
Does the engine have a thermostat installed? The 55/66/77/88 Oliver Wakeshaw engines must have a themostat in place for the coolant to circulate properly. I have never worked on a 60 but I assume it is the same. It does sound a little strange but the workshop manual is emphatic on this point.



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old

04-15-2006 15:58:12




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 Re: Overheating problem. in reply to EdW, 04-15-2006 15:27:00  
Nope no thermo in it. I guess I'll have to give that a try.



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AB

04-14-2006 19:06:31




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 Re: Overheating problem. in reply to old, 04-14-2006 13:55:58  
Does it have a working thermostat? Correct radiator cap? Good hoses that aren't collapsing? Has the radiator been repaired before? Sometimes these old radiators have been repaired so many times they won't cool as good in hot weather. Radiator might need to be taken off and tank cleaned by radiator shop or you may have to get a new core.



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old

04-14-2006 19:19:16




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 Re: Overheating problem. in reply to AB, 04-14-2006 19:06:31  
No thermostate. Whole system has been cleaned out with vinagar and then flushed with water. Hoses are new, its not a preassureized raduaito system.



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noncompos

04-14-2006 17:21:21




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 Re: Overheating problem. in reply to old, 04-14-2006 13:55:58  
Geez, I'm dumb..new water pump: if the water pump was installed and all rest done to try to cure overheating that existed prior to that work, then obviously nothing wrong with new pump..I took post to mean trouble started after work done..sorry



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noncompos

04-14-2006 17:17:26




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 Re: Overheating problem. in reply to old, 04-14-2006 13:55:58  
The oddity here is the guage not showing hot (I assume the guage reads normal..no, stop, wrong...I assume the guage reads the same as before the new water pump was installed...did the installer compare the openings in the back of the new pump with the old one? look into it for anything loose that could obstruct flow? (odd things come out of the factory sometimes)...did he make sure the new gasket didn't obstruct any flow openings?...on why the guage isn't reading hot, can anything be blocking hottest water from guage-sensor position? puzzling..good luck

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old

04-14-2006 17:24:33




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 Re: Overheating problem. in reply to noncompos, 04-14-2006 17:17:26  
New rebuilt water pump, corrcet for the engine and every thing matched up the right way. Gauge gets up to around 140-150 and thats all the higher it ever gets, but the engine is over heating. I figure maybe the gauge is bad and will be installing a new one to make sure. This is one that doesn't seem to add up.



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RAB

04-14-2006 15:00:33




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 Re: Overheating problem. in reply to old, 04-14-2006 13:55:58  
Wrong plugs, mixture too lean, in need of a decoke, ignition retarded, wrong grade of fuel, wrong pistons. Enuff 2 b going on wiv?
Or maybe an engine trait. Mine does it sometimes.
Regards, RAB



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old

04-14-2006 15:10:51




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 Re: Overheating problem. in reply to RAB, 04-14-2006 15:00:33  
What do you mean by a decoke?? It might be running a little lean but I know if I choke it when its running to it will die most of the time. It did satrt running bad today and I had to choke it a couple times to smooth it back out but then it started to run good again. Plugs are what the book calls for. I guess I could check the timeing and see if that will help. I just hate not being able to run it more then 30 minute or so. Takes a long time to get much done that way LOL. Thanks

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RAB

04-14-2006 23:27:09




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 Re: Overheating problem. in reply to old, 04-14-2006 15:10:51  
You wrote: Plugs are what the book calls for.

That is no good if they are wrong. You need to check them all for colour when the problem happens. May give you a clue as to why it over-runs. Regards, RAB



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evielboweviel

04-14-2006 15:39:40




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 Re: Overheating problem. in reply to old, 04-14-2006 15:10:51  
Old I believe decoke is the British term for decarbon(ing) the head
Ron



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