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PostPosted: Sat Aug 03, 2013 1:56 pm 
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Joined: Tue Jun 11, 2013 7:36 pm
Posts: 3
Hi all.im hoping somebody can help me,im looking to buy a socket for torquing the cylinder head jack bolts on a mammoth major 7.7 engine. The socket should be roughly square with the corners missing.would appreciate any help on this matter please.
many thanks..steve.


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PostPosted: Sun Aug 04, 2013 2:26 pm 
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Joined: Sat Jan 14, 2012 10:24 pm
Posts: 115
Snap On Tools do a 1/2" drive square socket that fits these properly. I think it is a 1" square, but you will have to measure the jacknut to be sure. Do check the condition of the jacknut assembly, I had one of these on a Leyland 8.6 earlier this year which had a broken flange. This made it very difficult to remove the head. Now it is repaired, should the head have to come off again then it will be a lot easier.


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PostPosted: Mon Aug 05, 2013 10:27 am 
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Joined: Tue Jan 17, 2012 10:40 pm
Posts: 12
I did it by shimming out two sides of a larger six sided socket ( a redundant modern injector socket, cheap and plentiful) . It only grips two faces of the nut but fits well and does the job.


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PostPosted: Tue Aug 06, 2013 8:53 pm 
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Joined: Tue Jun 11, 2013 7:36 pm
Posts: 3
Thanks for the replies. I got an engineer friend who is going to make one for me. :D


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