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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Unseizing TD-6 Engine

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Mark Bourne

01-18-2004 18:57:02




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Hi, I just picked up a td-6, and I spent today pulling the head. It was seized when it overheated. To me, it seems like the #1 cylinder is the only one seized. The other pistons kinda shake around in their rings. There are no scratches in the bore. It is way nicer in there than I expected. I have put some penetrating oil in there, and will see what happens in the morning. Would it be a good idea to pull the oil pan and unhook that #1 connecting rod and then see if the engine turns over? It make it easy to bang out the sleeve and piston as a unit and separate them from there. There was a lot of oil in the top end of the motor, so I am guessing that it did not get hot enough to boil the oil in it. Looks like a light seize to me. Mark

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swedeguyTD9

02-20-2004 13:36:38




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 Re: Unseizing TD-6 Engine in reply to Mark Bourne, 01-18-2004 18:57:02  
I would pull the oil pan and pull the #1 piston, clean the piston and sleeve. May even put new rings on that piston. /Dennis



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gm

01-18-2004 20:48:47




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 Re: Unseizing TD-6 Engine in reply to Mark Bourne, 01-18-2004 18:57:02  
Prob ran low on oil. Sounds like the pistons might be kinda loose, maybe it burned oil. if it really overheated, the head should be cracked. If you think its not too bad, just try to break it free. I guess you could disconnect the one piston and run on 3 cylinders. Prob still be enough power to do stuff with. Of course, removing the oil pan might reveal some bearing failures or whatever. -Greg



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Mark Bourne

01-18-2004 21:35:58




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 Re: Re: Unseizing TD-6 Engine in reply to gm, 01-18-2004 20:48:47  
Hi, The motor overheated and seized because the shutter was closed. There is a lot of oil in the motor. Dipstick says full. Motor was never touched after it seized. From just taking a glance at the head, it looks fine, but we will clean it up real good, and see what it shows. There was a lot of oil in the top end, so I dont think that it ran out. The head gasket didn't go either, because there is no evidence of water in the cylinders. It has been locked up for 15 years. I am going to pull the pan tomorrow. If I disconnect the #1 connecting rod, I will be able to tell if the crankshaft bearings are seized or not. Mark

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gary simpson

01-27-2004 01:03:35




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 Re: Re: Re: Unseizing TD-6 Engine in reply to Mark Bourne, 01-18-2004 21:35:58  
Try using an adaptor for the injector hole and use a porta power to hydraulicly pump the piston down and loose.



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