Re: F-20 head torque

Posted by Bruce S. on September 26, 2000 at 07:07:34 from (216.179.5.86):

In Reply to: F-20 head torque posted by Al P. on September 25, 2000 at 19:36:18:

Al: Just had the head rebuilt on my F20 by an
expert. I followed his instructions on putting
the head back on and have had absolutely no
leaks, so I'll pass his instructions on to
you.
1) Spray paint your head gasket with copper
coat or aluminum (I used aluminum high
heat paint) 3 light coats both sides.
Since your tractor is all back together,
I would try everything else on these instructions before pulling the head back off.
2) Torque the head down to 85 lbs. (This
is determined by bolt size.) Do it in
3 stages, first up to 30 lbs., second time
to 60 lbs. and third, up to 85 lbs.
THERE ARE 15 BOLTS TO TORQUE AND THE ORDER
IN WHICH YOU TORQUE THEM IS OF PARAMOUNT
IMPORTANCE. MAYBE THE FOLLOWING DIAGRAM
WILL HELP.

(LEFT SIDE OF ENGINE)

12 7 3 4 8 13
1

6 9
15 2 5 14
11 10

(RIGHT SIDE OF ENGINE)
4) DO NOT use any sealant on head gastket,
as it has a way of going where it shouldn't.
5) When your torque is up to 85 lbs., put your valve train back on (I set my valves at .018),and fire her up. and let it run until it
gets to operating temp. Shut down and retorque.Be sure to follow the sequence.
Too bad you'll have to pull all the rockers off
to do this, but that's the way it goes. That should be it. I did everything as listed above
and mine didn't leak a drop. Good luck.
Bruce SImmons,Marlboro, NY.

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