Pulling a Crank Shaft pulley

[moto650]

OP,
To get mine off, I removed the grill kidneys, radiator & AC condenser, attached the Pelican parts pulley holding tool and set it so the end of said tool was torquing against the floor. Then I used a 3/4" impact gun. I had tried the aforementioned posts here, (huge cheater bar on a snappy 3/4 breaker bar) and thought I was either going to break the tool or break some part of me if the bolt gave free.

And +1 on torquing it back tight with a proper torque wrench though I did put some anti seize on the bolt treads before torquing.

GL

[jlevie]

The air pressure suppled to the gun does have an affect on the torque generated, but that is more a factor of the the rate of impacts.

[Ceeker]

Probably removed once before

And not torqued correctly on reinstall ...

that isn't true...I have never removed the one I had because the motor was a rats nest 320k kilometers all original. neither case is true in mine.

But what was written above re: the internals of the gun makes perfect sense to me. but I would think the air pressure would have something to do with how much the gun can take and give.

[110stx]

Probably removed once before

And not torqued correctly on reinstall ...

[jlevie]

An impact gun set to 150psi and hammered on repeatedly will get the bolt loose. if it is held on by 350psi; how is it, 120 psi (which I used) could remove it?

The air pressure used to drive the impact wrench has little to do with the torque made by the wrench. The torque produced is mostly a function of the internal design of the wrench.

[paperplane94]

An impact gun set to 150psi and hammered on repeatedly will get the bolt loose. if it is held on by 350psi; how is it, 120 psi (which I used) could remove it?

Probably removed once before

[Ceeker]

An impact gun set to 150psi and hammered on repeatedly will get the bolt loose. if it is held on by 350psi; how is it, 120 psi (which I used) could remove it?

[ForcedFirebird]

Well, I haven't!

I am getting tired of people acting like I am fucking clueless around here.

Not trying to make you sound clueless, but in reality you are telling people that an impact is fine for 350 ft lb. If they take your advice and it's not tight enough, they will ruin their motor if it comes loose. Is it really that hard to do it properly?

[WUGcatsvt]

People just have different opinions that's all. Your knowledgeable but others didn't have the same experiences.


OP you might wanna read this, only if your hardcore:

http://www.angelfire.com/blues2/bimm...crankbolt.html

That is a pretty neat Idea. The car is not in running shape yet though. I am crafting a tool right now to hold the crank steady.

[KenC]

Just put the ebrake on and put it in 5th gear. That'll hold the crank.

[Ceeker]

Well, I haven't!

I am getting tired of people acting like I am fucking clueless around here.

on the contrary; I've read your posts and think you are very knowledgeable, so it goes without saying. :-) I like the head work you guys are doing too!
I think people can learn lots on here from the established members.

and no, I'm not saying this just to kiss your ass, ok?

[paperplane94]

Well, I haven't!

I am getting tired of people acting like I am fucking clueless around here.

People just have different opinions that's all. Your knowledgeable but others didn't have the same experiences.


OP you might wanna read this, only if your hardcore:

http://www.angelfire.com/blues2/bimmer/maint/tbelt/crankbolt.html

[MR 325]

...because I have seen them work loose when people try doing this ^

Well, I haven't!

I am getting tired of people acting like I am fucking clueless around here.

[jlevie]

Do not use Locktite on the crank pulley. It will be pure hell trying to get it off later. Do tighten it to 325-350ft-lb as the manual calls for. An impact wrench just doesn't get it as you have no idea how tight that is.

[ForcedFirebird]

You should also use red loctite on the bolt when tightening if you can't reach the 350 ft-lb of torque.

Definitely use Loctite, but you need the bolt that tight regardless...

Tighten it with a good 1/2" impact gun on full strength. Trust me, it's plenty.

...because I have seen them work loose when people try doing this ^

I made a tool to hold the crank hub. Used the pulley to mark a piece of flat aluminum, drilled the holes out and cut a handle on the end of it. Just used it yesterday on an s52 (will work on all the 6's).