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-   -   Slave Cyl. Leaking (https://www.cobaltss.net/forums/drivetrain-79/slave-cyl-leaking-247861/)

hunter19707 04-14-2011 01:24 PM

Slave Cyl. Leaking
 
I installed a six puck clutch in Jan. and found the slave cyl. to be leaking from the seal, replaced it, and a day later it is leaking again. Any ideas on what the problem could be? Could the clutch be off balance somehow causing the leak around the seal? Loose fitting after the install? Man, this sucks. I may just put the stock back in.

Iam Broke 04-14-2011 01:34 PM

GM LNF slave or another lesser brand?

hunter19707 04-14-2011 02:00 PM


Originally Posted by Iam Broke (Post 5708358)
GM LNF slave or another lesser brand?

GM this time.

Iam Broke 04-14-2011 02:42 PM

After I had my clutch replaced over a year ago, the fluid weeped out of the bellhousing for a few days after the disassemble/reassemble. I was afraid I had a leak then, but it turned out to be whatever accumulated during the process.

Are you loosing level in the master cyl?

Have you opened it up to see if the slave is leaking this time?

Could be the flex pipe?

Green LNF slave or older weaker LSJ?

Just some thoughts.

hunter19707 04-14-2011 03:16 PM

Original slave with six puck was green, the slave installed yesterday was gm black(I think black). It was done at the dealer. Master cyl. lost half it's fluid. Spot on the ground about the size of a coffee saucer. I could hear a rattling sound when the pedal was pressed in.(faint sound, but noticeable). Maybe slave is being overextended?

Have not looked at it yet.

Chevycobaltss3 04-14-2011 03:28 PM

Do not use the zzp adjustable to far extended......... Clutch wise i dont see it being the issue since it has to be flat and aligned with the friction disc and pressure plate. Ure t.b is warrantied. I am assuming u got a bad t
b again.........

Iam Broke 04-14-2011 03:33 PM

The LNF one is green, they used the weaker LSJ one IIRC.

hunter19707 04-14-2011 04:00 PM


Originally Posted by Iam Broke (Post 5708584)
The LNF one is green, they used the weaker LSJ one IIRC.

Are you sure? I believe the stock slave that was removed was black when I got my parts back after install.

hunter19707 04-14-2011 05:21 PM

Crate Engine Depot shows the lsj as green and the lnf black. Are there pics correct? I'm getting confused.

Iam Broke 04-14-2011 08:30 PM

No, I'm not sure, sorry. I'd have to go in the attic and see what I took out of mine. I'm old and a feeb.

You and CED are prob correct.

hunter19707 04-14-2011 09:08 PM


Originally Posted by Iam Broke (Post 5709232)
No, I'm not sure, sorry. I'd have to go in the attic and see what I took out of mine. I'm old and a feeb.

You and CED are prob correct.

Yeah, I'm getting pretty old myself. I'm at work till 11:30, so I'll try and look inside the bell housing and see where the leak is coming from tomorrow.

Iam Broke 04-15-2011 08:08 AM

Found this posted by quikredline...

"TC has more stroke no green bootie like lsj and costs less. works very well"

so black is the correct LNF one. I believe John Powell. lol.

ctn2mb 04-15-2011 09:10 AM

The LNF one I got from GM is green...

Iam Broke 04-15-2011 09:21 AM

Guess we need the part numbers for research then. I'll climb up in the attic Sat. and look at my original OEM one.

mongorat427 04-17-2011 12:58 PM

The new LNF 3.82 trans I have has a green one. I have an old LSJ trans downstairs Ill look at it. Well they both have green ones so I would guess that the black one is the upgraded one.

mongorat427 04-17-2011 01:35 PM

Heres a pic of the newer LNF bearing

http://i931.photobucket.com/albums/a...tchBearing.jpg

2.0 LNF Clutch Bearing - Cylinder 24242805

mongorat427 04-17-2011 01:45 PM

Clutch Master cylinder, cobalt
05-10 $161.85 $95.94

Clutch - Hydraulic system - Master cylinder

http://i931.photobucket.com/albums/a...erCylinder.jpg

hunter19707 04-17-2011 01:48 PM


Originally Posted by mongorat427 (Post 5715206)
Heres a pic of the newer LNF bearing

http://i931.photobucket.com/albums/a...tchBearing.jpg

2.0 LNF Clutch Bearing - Cylinder 24242805

This is the one that was just installed. I am getting a leak from it not even 24 hours after installation. I will find out tomorrow what the deal is, I hope. This problem is getting old, just want it to go away.

mongorat427 04-17-2011 05:07 PM

I just remembered I took apart that 2009 F35 about a month ago that had a cracked case. It had the black one in it and the part number is stamped right on it. This one looks to be intact with no fluid on it. I wouldnt use it anyhow. 24242805 part number. 2009 must be the first year they used that one.

SSPainter 04-17-2011 09:38 PM

I replaced my clutch over winter, and replaced my slave, and it leaked, i did everything by the book. turned out it was a bad one from GM and he said its happened before. So I got a new one and everything worked fine the second time.

hunter19707 04-17-2011 10:12 PM


Originally Posted by SSPainter (Post 5716250)
I replaced my clutch over winter, and replaced my slave, and it leaked, i did everything by the book. turned out it was a bad one from GM and he said its happened before. So I got a new one and everything worked fine the second time.

Wonder what the odds are of it happening twice in a row? I guess anything is possible with my luck!

mongorat427 04-24-2011 11:31 AM


Originally Posted by mongorat427 (Post 5715206)
Heres a pic of the newer LNF bearing

http://i931.photobucket.com/albums/a...tchBearing.jpg

2.0 LNF Clutch Bearing - Cylinder 24242805


2.0 LNF Clutch Bearing - Cylinder 24242805 Crate Engine Depot Price

SKU: 24242805
RETAIL: $97.67
YOUR PRICE: $73.24


GM Parts Direct Cost less


Mechanical Catalog
Item Number MSRP Price
24242805 $97.67 $57.86
Clutch - Hydraulic system - Slave cylinder
Slave cylinder, cobalt, 2.0l 2008 - 2010

Add to Cart Contact Us
OEM Catalog
Item Number MSRP Price
24242805 $97.67 $57.86

Slave cylinder, cobalt, 2.0l

Add to Cart Contact Us


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