Hi Phrank,
sorry do not have specs. you need but maybe this will help out.
The scans are from my 1965 W & B torque wrench book and gives good advice for all torquing criteria and a generic headstud pattern sequence which I believe will help you out.
Also from the specs. for older vertical pony engine Spec. Sheet, (including 17A D7) the torque given for 7/16" cyl. head studs is--- 57 ft/lb. These ponies are basically half of a 10,15,or 20 tractor engine anyway, depending on bore size !!!
I did a search here also and was surprised this topic came up nogo.
Cheers,
Eddie B.
hello all, here is some info that will help ,bruce oz
http://www.acmoc.org/ACMOC_BB/showthread.php?t=508
bolt spec sheet
[img]http://us.a2.yahoofs.com/users/44798b1bz98d4a071/d022/__sr_/9142.jpg?phoBpxFBL8cdb9Oz[/img]
If you don,t have a spec. then the next thing you can do is first get a torque spec sheet from a hardware store or sometimes Cat spec books has the bolt spec torques in the front of it in it for all bolts.This should be close enough for the old 10 engine & for the sequence which is pretty much std. is take the center row bolts from the center & alternate side to side if there are more than one row & end to end going back & forth till you get each one & use half listed specs.Next starting at the center alternate left & right again & also the same end to end till you get them all & last start over again with the same procedure & use the listed torque for each bolt (nut).Retorque to the specs the 3rd. time to make sure all are correct & you should be ok.Later Cat engines usually use a little more than the regular nominal torque sheet would so best to go by the book for the later engines. Put some lube on the threads of the bolts or nuts too & if the bolts are in good shape you can add just a few pounds to the torque when tightening them down.
thanx all for your help. i have a handle on the torqueing and tightening sequence and hopefully everything will be 5 X 5. Phrank
what are the torque specs and what sequece to tighten the head bolts?
[attachment=34624]20160330_230826-1.jpg[/attachment]
Thank you in advance...
Frank.![]()
hello , the spec you need are on the bottom of this page , bolts sequece to tighten the head bolts are start in the middle and work to the ends
torque specs sheet
http://www.acmoc.org/bb/attachment.php?attachmentid=56911&d=1453361423
try to put all nuts on the studs a few times on and off ( i do it with air impactwrench to do it fast) without head on and use some oil on them so you know they turn freely, and you are not torqueing on resistance on the (rusty?) treaths.