Torque Pattern

[James in Al]

I am in the process of rebuilding a 47 H Farmall. Can anyone tell me the correct torque pattern for the head bolts. The IH shop manual calls for 70 ft. lbs. but does not mention the proper sequence when tightening.

 

[Allan in NE]

On cast iron heads, start in the center and go in an ever increasing circular pattern toward the outside.

Also, do it in three repetitions with increasing torque values.

Allan

 

[TripleRange]

If you don't do the increasing torque amounts like Allan's says, you end up stripping the threads out of the block like I did on two holes. Then you get to put heli-coil repairs in the holes...not fun but works.

 

[James in Al]

Thanks