Torquing Rocker fulcrums and studs

[dee004]

In 303-01C-9 It says the following, CAUTION: Rotate the crankshaft until the damper locating dowel notch is in the 6 position or engine damage can occur.

Do I have to do this since I have not rotated the engine at all before I torque the Rocker fulcrum bolts and Head studs? If I do where can I view the dowel in question. Everything is back in and ready to torque.

[F250SixOH]

I believe that some have bent push rods before by not following that step. I'm sure others will chime in soon but I believe that you should.

[dee004]

On the front of what would be the harmonic balancer on a gas engine there is an orange dot. No notches that I can see. The orange dot is in the 9 oclock position right now. Is this what is being referred to? Is it also called a hormonic balancer on the 6.0? Can't seem to find it in the 6.0 bible, pictures of it but no description.

[a2elvis]

I have never really understood that procedure.

I have seen and done heads on 6.0L and never set the crankshaft in any real specific spot... Havent had any problems to date, so not sure how applicable that step is?

[dee004]

Originally Posted by a2elvis

I have never really understood that procedure.

I have seen and done heads on 6.0L and never set the crankshaft in any real specific spot... Havent had any problems to date, so not sure how applicable that step is?

If you just torqued them down slowly. Would the push rods not just do their thing and open the valves accordingly or am I missing the boat on this one?

[ajpu1983]

The dowel hole is located between 2 of the harmonic balancer bolts. Use a mirror and look in between the bolts and you will see the dowel hole. I always set it to 6 oclock.

[dee004]

Originally Posted by ajpu1983

The dowel hole is located between 2 of the harmonic balancer bolts. Use a mirror and look in between the bolts and you will see the dowel hole. I always set it to 6 oclock.

Beauty thanks. That would be dowel on the bottom correct? I have to turned the engine to 6 oclock and everything on the fulcrums loosened up from finger tight.

[m-chan68]

The main purpose of having the dowel on the crank in this position is to ensure that no pistons are at, or near TDC. This is so that you don't have any valves kissing pistons, just in case you have some sticky lifters that don't compress from being in the "relaxed" position, once you happen to torque down a rocker arm/pushtube assembly that happens to be in the partially open position.

[dee004]

Originally Posted by m-chan68

The main purpose of having the dowel on the crank in this position is to ensure that no pistons are at, or near TDC. This is so that you don't have any valves kissing pistons, just in case you have some sticky lifters that don't compress from being in the "relaxed" position, once you happen to torque down a rocker arm/pushtube assembly that happens to be in the partially open position.

Thanks Mike. I did turn it to 6 oclock and torqued everything to specs. It's great to know why it's required. Cheers,

[bfordmann]

How did you manage to rotate it with it back together not much room in there. I'm at that spot right now on mine, after tearing it back down to do the #5 cyl pushrod now have a bent one on #4 cyl.