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 Lockheed Brake Master Cylinder 1968
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James Ranaldi
V4 Guru

United Kingdom
1413 Posts

Posted - 05 May 2019 :  12:57:38 Show Profile Reply with Quote
Good afternoon all,

I am refurbing the brakes on my 1968 V4, LHD and I am seeking advice regarding the master cylinder.
The master cylinder is Lockheed 3211-822C Q10 which has the angled top piece with 6 bolts.
When I removed the top chamber, I expected to see a thin gasket which seals around the perimeter but there was a fairly substantial plate approximately 2mm thick made from some composite material. This plate has a cut-out and numerous holes.

I have seen the thin gaskets on a few web sites but I cannot find the thick plate.

What is the function of this plate and are they available ?

Thanks in anticipation.

Cheers
James

1968 V4 96 ,LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible

deggsie
V4 Fanatic

United Kingdom
327 Posts

Posted - 05 May 2019 :  20:37:28 Show Profile Reply with Quote
Photo of widely available gasket:

Jim's thicker 'plate'(in the middle of the other components):



___________________________
Saab - beyond the conventional !
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Derek
V4 Guru

United Kingdom
1855 Posts

Posted - 05 May 2019 :  20:48:09 Show Profile Reply with Quote
The full plate shown with the dismantled MC probably has 3 jobs. Besides being a seal it also serves as a fluid level indicator. This also makes it a splash plate that maintains the level in both halves of the fluid chamber.
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James Ranaldi
V4 Guru

United Kingdom
1413 Posts

Posted - 06 May 2019 :  08:58:39 Show Profile Reply with Quote
Thanks Derek and Derek.
I am beginning to understand what is going on here.
Deggsie educated me on the Spirolox circlip which holds the spring retainer in.
Cheers



1968 V4 96 ,LHD
1984 99 GL
1992 C900i Convertible
1993 C900 LPT Convertible
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