How much torque is too much?, Removing fan yoke Options

[ctc911ctc]

‘74 2.0 22k

While I wait for the dog teeth to be delivered, I thought I would change the seals (front and rear)



I built a tool for my wheel puller - have turned it to about 80 ft/lbs, kinda worried to crank it another turn,,,,,,

I am using penetrating oil on the shaft,,,,,,,,,what next?

Heat?

Incantations?

Ideas?

(IMG:style_emoticons/default/confused24.gif)

[Superhawk996]

Yowza -- can see deformation of the hub from the hammering. Using soft face hammer?

Bottom line 60 seconds of heat is nowhere near enough. You want that part to get up to 250-350 degrees. Hot! So hot that you wouldn't want to pick it up immediately even with thin leather gloves. Sort of hard to explain. You're not shooting for red hot, that is way too much. If you were to put a drop of penetrating oil on it while it's hot, it should be hot enough to smoke that oil.

As stated above make sure the puller isn't interfering. Doesn't look like it to me unless the solid material at the base of the thread is one of those tapered points - I'm assuming that is the crank nose that I see. I have a small plate of thick hardened washers that I put on the crank nose so the puller isn't bearing directly on the counterbore of the crank and/or at risk of messing up threads in the crank nose. That elimantes some of the apprehension about putting more torque on the puller for me.

Bolt in hole could work too but beware then all tension is on the bolt threads. I've seen it work and I've even done it this way a few times myself when I have too, but, I don't really like to put that load on threads like that.

That one seems to be a real bear -- keep fighting the good fight.

[ctc911ctc]

OK, more heat - less hammer!

BTW, the marks that are in the picture seem to be from when the part was made - there are a few flat spots on the edge of the yoke in various places.

Thank you SH!

Yowza -- can see deformation of the hub from the hammering. Using soft face hammer?

Bottom line 60 seconds of heat is nowhere near enough. You want that part to get up to 250-350 degrees. Hot! So hot that you wouldn't want to pick it up immediately even with thin leather gloves. Sort of hard to explain. You're not shooting for red hot, that is way too much. If you were to put a drop of penetrating oil on it while it's hot, it should be hot enough to smoke that oil.

As stated above make sure the puller isn't interfering. Doesn't look like it to me unless the solid material at the base of the thread is one of those tapered points - I'm assuming that is the crank nose that I see. I have a small plate of thick hardened washers that I put on the crank nose so the puller isn't bearing directly on the counterbore of the crank and/or at risk of messing up threads in the crank nose. That elimantes some of the apprehension about putting more torque on the puller for me.

Bolt in hole could work too but beware then all tension is on the bolt threads. I've seen it work and I've even done it this way a few times myself when I have too, but, I don't really like to put that load on threads like that.

That one seems to be a real bear -- keep fighting the good fight.