BMW 320d E46 Crankshaft Pulley Removal (Chuck Norris Bolt)

Some helpful advice to prevent stress while attempting to remove the legendary tight 22mm crankshaft bolt we dubbed Chuck Norris.

[@lucap3415]

Maaaan help.. I tried even with the air gun.. but it doesn't comes off....

[@daveflowers3952]

How did it go using the gun did the balancer ever come loose

[@greasyboar500]

How did you lock the crankshaft?

[@AutomotiveAddiction]

I didnt. If i were going to i would have removed the starter motor and used a large screwdriver on the starter ring gear to prevent the engine turning. Fortunately the 1/2 drive airgun undid the bolt, and the 3/4 impact made sure it was tight enough afterwards. I also marked the bolt to pulley as well so i could keep an eye on the bolt and make sure it wasnt coming loose as i was unable to correctly torque the pulley bolt. The specs i found were 100nm + 60* + 60* I estimate the torque of my bolt to be 100nm + 90* so im around 30* under recommended torque. No problems thus far, although i may try to tighten again in 100miles or so with the airgun again, just to see if i can tighten it more now its bedded in.

[@CoisasdeMacho]

Don't you need to take off the radiator? I have a makita 1002z is smaller than makita 450, just need to remove the fan to access the screw with the impact wrench?

[@AutomotiveAddiction]

The radiator does not need to be removed on a 320d, only the fan unit and shroud, but on a 330d the radiator would have to be removed. On a 320d there is enough room to get a 3/4 airgun on the bottom pulley easily as there is lots of space between the pulley and the radiator. (I can climb into the gap and shut the bonnet) :) Hope that helps!

[@AutomotiveAddiction]

Although its worth pointing out my 450BTW did not have enough power to loosen the bolt, i had to use a CP 1/2 airgun on a large compressor running 10.5bar.

[@davidscott1101]

Underneath there's an access hole to flywheel big screwdriver in there with someone holding it.....1metre long 1/2 power bar on the nut cracked right off

[@scrinja]

There is but first you have to remove the front plastic cover followed by the alloy sump guard 8 bolts 16mm then 3 clips and your in the area a small chisel ground to fit in the flywheel teeth and it comes off easy with no drama without any gun just bar & 22mm socket Then torque to 300 ftlb with crank locked up or your just guessing Dude..do it right

[@R9218-t7x]

So you tightend it to 100 nm and then tightened another 180 degrees afterwards? Just to make sure I get it right lol

[@AutomotiveAddiction]

I don't think I managed the amount of was supposed to be tightened. So I just did it up to FT. And marked the bolt to the pulley so I could check in the future and see if it has moved. No movement so far. I think I managed between 90-180 degrees..

[@sergiomarel6919]

You have to get a lot of room to do, I'll report on it, and it s going to be winning if I really, "the assistant help. Tienes que mejorar mucho tus grabaciones, informarte un poco, saldrás ganando si de verdad quieres ayudar. Aprobado justito.