Pulling a Crank Shaft pulley

[WUGcatsvt]

I was reading the torque specs for the crank shaft pulley. The Torque specs are something like 350 Ft Pounds. That is a crap load of Ft Pounds. My Torque wretch only goes to 150 Ft pounds.

I am trying to get some advice on pulling it? Also re-installing it. Is there any trick to this? Has anyone done an estimation of the 350 Ft pounds using a bracker bar? Also does anyone have some tips on keeping the Crank from moving?

Thanks for your help
Dan

[paperplane94]

I believe there is a tool that you can use.

I also heard that you can use the torque multiplication of the starter motor.


Sorta like this:

[paperplane94]

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

[MR 325]

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

[ttrousdell]

get an 8ft. cheater bar or something to remove the "jesus nut". Block one of the pistons with a block of wood thats being heald down by a peice of flat stock bolted to the block with the head bolts.

[WUGcatsvt]

Thanks for all the help. I may see if my impact gun can handle it but It is only rated to 300 ft lbs so I doubt it. It will be a challenge but it will come off.

[jlevie]

A good way of getting that sort of torque is to use your body weight. Figure out how much of a lever arm is needed for your weight. Put a foot on the breaker bar/extension at that point and put your full weight on the bar.

[Ceeker]

I removed and installed mine with my compressor bumped to 120psi and sat on it with the gun for about 30 sec before it started to give.

[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).

[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.

[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.

[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

[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?

[KenC]

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

[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.