John Deere 4240 head gasket install

NY_JD4240

Member
What s your opinion on installing a head gasket on my 4240?

Do I coat it with the copper adhesive or install it dry?

Per my John Deere service manual it states torque the head to 105ft-lbs initially and then go back and retorque to between 117-143 ft-lbs, big difference here....

Now, Reliance states that I should torque to 95ft-lb (grade 12.9 bolts) and the turn an additional 90 degrees. This is alot more torque then what Deere is stating?

Another thing, I originally thought my head was cracked as I could not seem to get the head to seal. I realized almost half the head bolts are a little too long as I can see the bottom of the bolts are flattened and shinny. Anyone else ever seen this?
I have had this tractor fir about 15 years or so. When I rebuilt this a year ago the head was planned, maybe it was planned prior to me aquirring it. Maybe the Reliance bolts were just a little to long.
I ended up cutting about 3/32" off of the bolts.
 
I?d get new bolts from John Deere and then I?d go
with what reliance says on torque if you?re using
their parts . I always torque heads in 4 steps
 
The last 4240 that I overhauled, the kit had two head gaskets, better get your block and head casting numbers and contact reliance and JD, to see what is going on. Maybe bolts are supposed to have washers?
 

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