Leaky brake cylinder

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PMNorris
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Leaky brake cylinder

Post by PMNorris »

All,
My brake cylinder (70T) appears to be leaking slightly from the 2 entry points at the top of the cylinder. Unlike the hoses, the 2 at the top don't appear to have threaded hoses. I might be wrong here of course, but there's not an obvious thread. Any ideas how to fix this? Is the brake cylinder serviceable, or do I need to buy a new one?

Image
Image

Many thanks

Paul
1996 993 Turbo X50 project.... Restoration work in progress!
1970 2.2 911 T / Ex RS Clone, now more original looking, with 1979 3.2 SS engine (sold)
1988 3.2 Carrera Commemorative edition (sold)
jwhillracer
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Re: Leaky brake cylinder

Post by jwhillracer »

No, they are not threaded joints , just a push fit in the rubber connectors. The metal pipes have a swaged rib on them, check that they are pushed right in, you ought to feel a slight bump as they go fully in to place. If the leak still persists, then change the rubber connectors. There is very little pressure in the fluid at that point, only the head pressure from the reservoir just above.

JW
Life's a single timed run with no practice....
1963 Porsche 109 Junior
1970 914/6 2.4E/Webers
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PMNorris
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Re: Leaky brake cylinder

Post by PMNorris »

jwhillracer wrote: Thu Dec 26, 2024 4:48 pm No, they are not threaded joints , just a push fit in the rubber connectors. The metal pipes have a swaged rib on them, check that they are pushed right in, you ought to feel a slight bump as they go fully in to place. If the leak still persists, then change the rubber connectors. There is very little pressure in the fluid at that point, only the head pressure from the reservoir just above.

JW
Many thanks, I'll give that a go.
1996 993 Turbo X50 project.... Restoration work in progress!
1970 2.2 911 T / Ex RS Clone, now more original looking, with 1979 3.2 SS engine (sold)
1988 3.2 Carrera Commemorative edition (sold)
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PMNorris
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Re: Leaky brake cylinder

Post by PMNorris »

I need parts 21 & 22. Its not clear if these are 999.702.076.50, 999.702.065.50. The grommet could be part 911.355.922.00, but this appears to be for a later car.

Anyone know for sure?

Image

Many thanks

Paul
1996 993 Turbo X50 project.... Restoration work in progress!
1970 2.2 911 T / Ex RS Clone, now more original looking, with 1979 3.2 SS engine (sold)
1988 3.2 Carrera Commemorative edition (sold)
T911UK
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Re: Leaky brake cylinder

Post by T911UK »

I suspect you need 2 of 999 702 180 40 £2.82 from your local OPC
http://www.type911.co.uk

Cayenne Turbo S
993 Turbo
911 SC Targa backdate 1971
964 1991
912 1968
914 1974
356 1962
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PMNorris
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Re: Leaky brake cylinder

Post by PMNorris »

Many thanks, I have now ordered the parts I need.
1996 993 Turbo X50 project.... Restoration work in progress!
1970 2.2 911 T / Ex RS Clone, now more original looking, with 1979 3.2 SS engine (sold)
1988 3.2 Carrera Commemorative edition (sold)
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