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Case Tractors Discussion Forum
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D188 head bolt torque and sequence

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Paris Wells

03-10-2007 15:08:23




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Hi I purchased a 350 crawler , Top of the motor was apart . I got every thing back from the machine shop and would like to asemble it this sunday the temp is above freezing here in NH . Ant help would be appriated




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bradley martin

03-11-2007 10:02:09




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 Re: D188 head bolt torque and sequence in reply to Paris Wells, 03-10-2007 15:08:23  
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WE were unable to scan the page into this message but my daughter was able to draw the bolt torquing sequence. The tappet assembly bolts should be torqued to 25-30 ft bls. Hope this helps.



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bradley martin

03-11-2007 03:01:06




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 Re: D188 head bolt torque and sequence in reply to Paris Wells, 03-10-2007 15:08:23  
Head bolts torque to ll5 ft.lbs. I have the diagram for the sequence but I am not knowledgeable enough about computers to be able to scan it into this reply. I can likely get my daughter to do it, though, after church. One thing you need to be careful about with the l88 is using the proper fire rings in the head gaskets...as the engine ages and the shelves get thin it becomes necessary to use the thicker fire rings to prevent the sleeves from vibrating upa and down causing the o-ring at the bottom to start leaking. Good luck.

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Paris Wells

03-11-2007 05:54:11




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 Re: D188 head bolt torque and sequence in reply to bradley martin, 03-11-2007 03:01:06  
Thank you for the info That would be great if she could scan the piece . Ipurchase the headgasket kit from the local dealer I hope it will be fine . I think I see what you are saying so the rings are part of the gasket if you have a motor with a lot of hour and age you would want a gasket with thicker rings. Do you also have the torque on the rocker arm shaft bolts .



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