Strange knocking noise from top of engine / supercharger???
I figure the hardest part is getting the supercharger center bolt off. I went to harbor freight and bought a $50 electric impact gun with ~250lbs ft tq, 15/16 socket, impact swivel, and a strap wrench. I heated up the bolt with just a heat gun for a few minutes and then hit it with the impact for a good 40 seconds straight and it came right off lol. Then again my supercharger bearing has been replaced before so the bolt is probably easier to come off.
Last edited by Jakez; Dec 24, 2012 at 11:15 PM.
I figure the hardest part is getting the supercharger center bolt off. I went to harbor freight and bought a $50 electric impact gun with ~250lbs ft tq, 15/16 socket, impact swivel, and a strap wrench. I heated up the bolt with just a heat gun for a few minutes and then hit it with the impact for a good 40 seconds straight and it came right off lol. Then again my supercharger bearing has been replaced before so the bolt is probably easier to come off.
Inside of the bellows is a Oval steel support ring . It is not molded or glued in place. just sets in a shallow groove to keep the bellows from collapsing under hi throttle openings. Twisting the bellows will dislodge the steel ring . It will make its way through the Throttle body. goes to the blower rotor blades .
the inter-cooler will catch some of the debris , but much of it gets blasted back toward the throttle body intake manifold , the the bypass valve opens up !! end of Story . I've seen this twice in the last 6 years.
Cheers _PTEngineering
Going to take a further stab at this later today or tomorrow. Everyone have a Merry Christmas!
The Best of Mercedes & AMG
And do I need to pull the injectors?
Last edited by Jakez; Dec 28, 2012 at 01:17 PM.
We did have to pull the injectors and flip the entire fuel rail over to the side out of the way. When I first started her up there was a bit of ticking left and it still sounds rough on a cold start but I think it's worked itself out now it sounds pretty normal.
There was only a tiny bit of rubbing left in one spot when I put it back on and I couldn't figure out what it was so that was the furthest I could go with cleaning it out.So thankful for the guy running the shop I go to. He basically had me do all the work and helped me with what I couldn't or didn't know how to do. I know I can remove/install this thing myself now, minus the lifting lol.
I thought about that.. but I know there are hoses and stuff in areas where I can't really get a pic, and also wasn't sure of where to take pics and what of... maybe next time lol.
Last edited by Jakez; Dec 30, 2012 at 08:17 PM.

Does anyone know the correct route for this vacuum hose? It's blue and goes to the top of the supercharger. We put it on next to last and... yeah... lol.
Also, my a/c and heat suddenly stopped working now... wtf?
Last edited by Jakez; Dec 30, 2012 at 08:27 PM.
Or a part number for the entire hose would be awesome. Cant find it on parts.com
Chopped about 4-5 inches off and replaced the section with 5/8" hose and an adapter. All good now


