benz_addict

Noticed this..


Took the cover off and found it's coming from the bolt area


Yup it's S/C oil. Smells like that disgusting gear oil I changed 8000kms ago.

Could this be because the S/C pulley bolt is not torqued correctly? Is there some sort of seal behind this bolt?

What's the correct torque for this bolt?

Snogard

Bolt (torque) have nothing to do with that leaking; it is your Seger-ring that is leaking. Common thing on old superchargers...Been there done that on M62 SC on my SLK....
P.S. Did you ever swap SC oil? If yes, did you overfilled it? Overfilling can cause leaking too....Also, did you spray some sort of lubricant on pulley bearing which is spraying arround now? Just asking....

Ali_E55

it can't be leaked from there.

i replaced my S/C pulley before and there is no connection seen to S/C oil.

maybe some oil from the bearings if you used some when replacing them.

Snogard

There IS connection, but behind the magnet. So if SC Seger-ring is leaking oil from SC gear casing to the outside, oil could come from behind the magnet (thruu faulty Seger-ring) upfront to the pulley (because of spinning)...But i doubt that. I think somewhere in the past there must have been some liquid lubricant sprayed onto the pulley bearing (because someone thought that this could "repair" faulty bearing) and THAT liquid is now making a mess because it is not staying inside the bearing....That is THE ONLY likely explanation of the mess on the pictures...But if member actualy SMELL SC oil (it have VERY distinctive unmistakeble smell), then for sure it is Seger-ring that needs to be replaced. In that case, you need press to take the magnet out and swap the Seger-ring...

Ali_E55

it will be leaked behind the pulley on his picture not on the front side.

thats how i meant it.

i know some of my friends which their 55k has more than 300k km without any leak. and they never had a problem. they drive them like there is no tomorrow.

Hammer Down

Why are you ignoring my pm's bro? you need to make good on our deal

shardul

iTrader: (1)

still waiting on your approval to ship the damaged pulley.

GT-ER

My pulley is also releasing some kind of grease from this area. I thought at first it could be belt slip dust but it's really greasy so now I doubt it ( or it could be both ). I cleaned it up twice now and it just keeps coming back. I wonder if this is why these bearings fail? Maybe the grease inside the bearing is seeping out and when it's almost all gone the bearing will fail.

shardul

iTrader: (1)

let me ask you all. when you replace the sc cluch assembly do you all use teflon tape on the bolt? If no then yes there will be some fluid leak.
All the clutches that I have replaced I have sued teflon tape and they have been fine.

GT-ER

I've never replaced mine...don't know if the previous owner did.

shardul

iTrader: (1)

it would be a good idea to undo the bolt put some teflon tape and it and tq it back down. i am sure it will solve the problem

Hammer Down

I'm sill waiting of benz_addict to refund my cash for the damaged pulley that he traded. Sorry for the delay Shardul but this dude needs to make it right. He told me on August 8 to give him a week to save $250 and then he would send it to me. Almost a month later and I'm still waiting and he doesn't respond to emails, pm's or even on facebook.

GT-ER

Uhh Ohhhhhhh....I can see where this thread is going.

Snogard

Once again; there is NO CONNECTION between SC clutch bolt and SC oil-there is no hole thruu the axle! And even if there was (and it is not) a hole, the Seger-ring behind the magnet holds the SC oil inside, not the bolt. So no teflon is needed. All that is needed (like mercedes did in 1st place) is some loctite on the bolt thread, but not for unleaking purposes, but because bolt can undo itself without loctite and with too little torque when torquing it down...That instructions is written even in WIS.

And yes, when SC clutch bearing is going south, there IS grease seapage....

GT-ER

Makes sense to me...hmmmmmm.

Snogard

It could be. The biggest enemy for SC oil leaking is overfilling the oil when doing SC oil change, because over pressure to the Seger-rings (or faulty Seger-rings themselves). Even it is strange to think, but inside gear casing there is constant pressure buildup (some pressure from incomming pressurized air is always escaping into gear chamber (especially when engine is hot) and when oil is overfilled that pressure becomes even bigger and seapage thruu Seger-rings begins-been there-done that-see that several times). So big kilometers themselves doesnt meant much when maintanance was good.

Snogard

Dont worry for the supercharger oil, man If there was infact SC oil (original SC oil, not some equivalent that was puted there after) leaking in your car, BELEAVE ME-you would unmistakable know it because smell is so distinctive that you can not miss it even if there is only a little bit. So no worries and just analyze your SC clutch bearing

GT-ER

It's definitely not SC oil...it looks more like grease. I think it's the bearing but it's still quiet so I might as well just wait till it dies.

Snogard

If so, then there is no other possibility like SC clutch bearing. If there is still no bad sound from it, then just rešplace front dust guard (which also act like a greas gasket) on bearing and you will be fine. It can be done in a minute and you dont have to undo nothing to get to it. Just take old one out and finger press new one in.

GT-ER

I didn't know I could do this. Where do I get a new one?

Snogard

From other bearing(old or new, just to have a good dust guard). You can do that on all bearings which have plastic/gumi (not metal) dust guard.

P.S. Is your dust guard orange or is it black like it is on the 2nd picture in this thread?

GT-ER

It's orange.

Snogard

Then it is original. Wonder why is leaking at all at your low millage?? It shouldnt. Anyway, just replace it before bearing get dried (i bet it is already).

benz_addict

Hammer down PM'D.
I'm going to use teflon tape and torque it back down. The bearing is fine and not leaking and it's the new nachi replacement. I don't want to remove the whole supercharger at the moment to get to the seger ring so lets see if this fixes the problem.

GT-ER

Would belt slippage dust feel greasy? It's black.