clutch slave cylinder - BMW Luxury Touring Community
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post #1 of 5 Old Feb 15th, 2008, 1:51 pm Thread Starter
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Location: Brewster, NY, USA
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clutch slave cylinder

I just removed my slave cylinder to drill the weep hole and found a little nice clean fluid inside the housing. Is this normal or was it starting to leak? I'm picking up a new one anyway, was just curious.

Ray Rau
Brewster, NY
'99 LT - Champagne
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post #2 of 5 Old Feb 15th, 2008, 1:59 pm
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Re: clutch slave cylinder

Many of us have found this. You need to determine (by smell usually) if it is Brake Fluid (from the slave) or gear oil (from input shaft seal). If you have not experienced any slipping of the clutch, you just may have caught it in time.

Jack Homesley
Cornelius, NC USA
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post #3 of 5 Old Feb 15th, 2008, 2:17 pm
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Re: clutch slave cylinder


I found fluid on the clutch actuator rod past the felt seal

I was lucky, since it only penetrated a 1/2" or so. The cluctch was unaffected!

Go ahead and replace the seals, felt and drill holes in the clutch housing (for main seal leaks) and slave housing.

Go ahead and buy a lottery ticket, your luck may still be holding out

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post #4 of 5 Old Feb 15th, 2008, 2:35 pm
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Re: clutch slave cylinder

Same thing just happen to me, go ahead and change slave cylinder, input seal and transmission output seal.
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post #5 of 5 Old Feb 15th, 2008, 3:39 pm
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Re: clutch slave cylinder

Any fluid in this cavity is bad news.

Apparently brake fluid will attack the transmission seal and tranny fluid will attack the slave seal. So you're knackered either way.

It seems the only course of action is to replace the slave cylinder and the transmission seal which it sits against.

Good luck

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