[Mgs] slipping cluch

Barney Gaylord barneymg at mgaguru.com
Thu Oct 25 20:06:07 MDT 2012

Low brake fluid will not cause slippage.  There is no way for fluid 
to get from a leaky slave cylinder into the clutch friction disc 
space inside the bellhousing.  If fluid in the master cylinder goes 
low enough to introduce air in the pipe, then the clutch will not release.

Worn out friction disc can cause slipping.  Oil on the friction disc 
can cause slipping.  Oil can come from leaking engine rear scroll 
seal or from leaking gearbox front scroll seal (or rubber seal on 
later models).  Since the gearbox uses engine oil, and it drips from 
the same point on bottom of bellhousing, it may be difficult to tell 
where the oil originates (unless you use different color oil in the gearbox).

Barney Gaylord
1958 MGA with an attitude

At 06:27 PM 10/25/2012 -0400, Tom Gunderson wrote:
>The reason I want to know about my brake fluid is the master 
>cylinder is low and I need to put fluid in. Also after I drive the 
>car for about 15 or 20 minutes the cluch seems to be slipping. I was 
>wondering if low fluid level could cause this. Maybe having lower 
>preasure in the cluch line.

More information about the Mgs mailing list