Crankshaft Pulley removal

[ImarStudios]

Hello Everyone,

I tried searching on many websites and found this forum. I searched heavily and still couldn't find my answer. here is my situation.

I have a 8g 2003 v6 3.0L and I am trying to change the head gasket and I am stuck. The Crankshaft Pulley seems to require some special tools. I found online the MB 991800 Pulley Holding Tool and then two pins for it MB991802. Is this the only way? (if so I am having trouble finding anywhere to purchase these tools) My Crankshaft pulley is a solid piece and I can not put anything through it to brace while I try to loosen the Crankshaft nut/bolt. Has anybody successfully done this on my engine before without any special tools? any help would be greatly appreciated.

[M-Rod]

I've never used a special tool. Just use a 1/2" drive impact in the bolt. Problem solved.

[4g63lover]

Impact gun works awesome. Or what I used to do is disable ignition and wedge a breaker bar on the subframe and bump the starter. Works wonders.

[Galanttuner10]

Impact gun if you are taking the bolt off that holds the crank sprocket on

[ImarStudios]

if you are using the impact gun do you still have to make sure the pulley doesn't rotate?

[4g63lover]

The bolt just comes out. The bolt(s) to the crank pulley to the sprocket comes right out with a 3/8 impact.

[M-Rod]

He is working on a V6 as stated in his first post. 1/2" impact will be the correct drive size. I remember personally as I just had my crank pulley off roughly a month ago.

[ImarStudios]

He is working on a V6 as stated in his first post. 1/2" impact will be the correct drive size. I remember personally as I just had my crank pulley off roughly a month ago.

How did you hold the pulley in place? wont the pulley spin when you try to take it off?

[M-Rod]

With an impact gun it won't turn the crankshaft. only the bolt will turn. once the bolt is out, just wiggle and pull the pulley off with your hands.

[dknight3]

Impact gun works awesome. Or what I used to do is disable ignition and wedge a breaker bar on the subframe and bump the starter. Works wonders.

thats how i did it lol, kinda ghetto but it works, the impact gun is best way though cause it will help you get it on good too.

[ImarStudios]

Impact gun works awesome. Or what I used to do is disable ignition and wedge a breaker bar on the subframe and bump the starter. Works wonders.

I have a 200ft/lb impact wrench that I used and no luck! Should I just keep hacking at it until it gives. Right now it doesn't seem like the impact wrench that i have is going to work. How much force were you using?

[foxbrand]

you need a more powerful impact, PB blaster and a good air supply, if that doesn't do it, by all means, you should do the starter bump trick

[M-Rod]

I have a 200ft/lb impact wrench that I used and no luck! Should I just keep hacking at it until it gives. Right now it doesn't seem like the impact wrench that i have is going to work. How much force were you using?

Ingersoll Rand 2135TiMAX @ 100psi. It was an unfair fight to say the least.

[wetamup2k3g]

Ingersoll Rand 2135TiMAX @ 100psi. It was an unfair fight to say the least.

That's the one I have, it's capable of removing 2 1/2" hex head sockets on our railcar heavy components that get torqued in excess of 520 lb ft! I love this gun!

[oakrdrs187]

^ that's some high power weaponry you got there.

[foxbrand]

where an impact with a limited air supply fails, a starter motor succeeds

[wetamup2k3g]

^ that's some high power weaponry you got there.

Love the thing, it's six years old now and still busting shit loose like it was new!

where an impact with a limited air supply fails, a starter motor succeeds

This is true, these kinds of impact guns need a good amount of CFM's to do the job, a pancake compressor ain't gonna cut it.

[oakrdrs187]

^ A small pancake would probably be enough for 5 seconds of hammering.