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Case Tractors Discussion Forum
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dc case head gasket issue

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timsc260

10-19-2011 18:24:22




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I have a 1953 dc case that has been completely rebuilt. I installed a brand new head gasket that leaks. I torqued the head to 75 foot pounds and when i pulled the head back off it didn't look like the gasket hadn't even been crushed. so i cleaned everything and reinstalled the head and it still leaks. So i was wondering if anyone had any ideas, and if the head bolts are tight enough.




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Don L.

10-20-2011 08:45:03




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 Re: dc case head gasket issue in reply to timsc260, 10-19-2011 18:24:22  
Do you have good sleeve "stand up" above the block of .001 to .003 ?
Don L.



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KYCASE1

10-21-2011 11:17:33




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 Re: dc case head gasket issue in reply to Don L., 10-20-2011 08:45:03  
Don I will soon be putting the sleeves back in a 38 CC soon. Should they also have the .001 to.003 stand up. The machine shop said after the sleeves were instaled the block needed to be decked to flaten everything out. Also were is a good place to get the mag rebuilt for the CC. Thanks KYCASE.



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Don L.

10-22-2011 06:19:54




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 Re: dc case head gasket issue in reply to KYCASE1, 10-21-2011 11:17:33  
Hummmm ....to deck the block to me means w/o the sleeves, and after that is to correct the upper counter bore , to provide the .001 to .003 sleeve stand up. Got to have stand up or no sealing will take place. Very few people need to deck a gas block, it is the diesels that get it.
Don L.



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John Saeli

10-20-2011 06:59:05




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 Re: dc case head gasket issue in reply to timsc260, 10-19-2011 18:24:22  
Everyone here has good suggestions. If the head is true & flat, then I lean to the nuts bottoming out for one reason or another. Threads must be cleaned & oiled. It won't hurt to add a SAE Flat washer under each nut. I always retorque heads this way: After installation, add fluids & run the engine till fully warm. Then starting with the #1 nut in the center of the head, back off 1/4 turn & bring it back up to recommended torque. You will find that you will not only come back the 1/4 turn, but usually another 1/2 turn. Just pulling, without backing off usually yields nothing. Then continue through the tightening pattern till all the nuts are done.

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JTs randr

10-19-2011 20:46:02




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 Re: dc case head gasket issue in reply to timsc260, 10-19-2011 18:24:22  
You can also apply head gasket sealer when you get ready to reinstall the head you can get it at most auto supply stores in a spray on or a brush on it helps stop those small leaks.



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jerry3

10-19-2011 19:23:47




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 Re: dc case head gasket issue in reply to timsc260, 10-19-2011 18:24:22  
had that happen to mine the head bolts were botting out put spacer under tapes fix it Jerry



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Derrol Wells

10-19-2011 18:36:04




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 Re: dc case head gasket issue in reply to timsc260, 10-19-2011 18:24:22  
Tim, Have you had the head milled flat on the gasket surface? If the head is warped, no amount of torque on the head bolts will seal it off. Take it to a machine shop that can resurface that head.---Derrol in Texas---(Case LA Propane)



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JimEvans

10-19-2011 18:51:18




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 Re: dc case head gasket issue in reply to Derrol Wells, 10-19-2011 18:36:04  
Make sure the threads are clean or you wont get an accurate torque reading.



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j hikemper

10-20-2011 06:17:56




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 Re: dc case head gasket issue in reply to JimEvans, 10-19-2011 18:51:18  
along with ALL OTHERS ADVICE ,, Use Copper Coat on all surfaces ,, Also have been told aluminum paint worx ,, ,, are you sure you do not have a liner leakin ???



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