Master brake cilinder

[Hans woonboot]

Good evening everyone. I need help overhauling the master brake cylinder on my 1968 E9 2800CS. I am not getting any pressure on the brake lines and think the brake cups are not seated correctly. I am looking for a clear installation diagram. I have attached some photos. Regards, Hans woonboot

 

[Phemisg]

Use the old one as a reference? The old ATE KITS came with instructions. Or get the whole cylinder. How does the bore look?

 

[Hans woonboot]

Use the old one as a reference? The old ATE KITS came with instructions. Or get the whole cylinder. How does the bore look?

Hello Phemisg, I am ordering the overhaul kit from W&N; they do not supply a manual with it. The cylinder bore looks good. Thanks for your reply. Regards, Hans

 

[boonies]

I would plan on using a hone on the bore to break the glaze and rubber reside that would build up over the years. It will give the new rubber cups something to bite against.

How old are your flexible rubber brake lines front and rear? They begin to swell on the inside and can reduce braking application force and also retain pressure keeping the brakes applied.

 

[Hans woonboot]

Ik zou aanraden om de cilinderwand te honen om de glazuurlaag en rubberresten die zich in de loop der jaren hebben opgebouwd te verwijderen. Dit geeft de nieuwe rubberen afdichtingen iets om zich aan vast te grijpen.

Hoe oud zijn de flexibele rubberen remleidingen voor en achter? Ze beginnen aan de binnenkant op te zwellen, waardoor de remkracht afneemt en de remmen langer onder druk blijven staan.

I would plan on using a hone on the bore to break the glaze and rubber reside that would build up over the years. It will give the new rubber cups something to bite against.

How old are your flexible rubber brake lines front and rear? They begin to swell on the inside and can reduce braking application force and also retain pressure keeping the brakes applied.

Hello Boonies, I am currently looking for a new master brake cylinder. In the past, I replaced the rubber brake hoses because they were swollen. Thanks for the help. Kind regards, Hans

 

[rsporsche]

you should check out oldtimerteile

Brakes7

shopware.bmw-oldtimerteile.de

in the USA, fcpeuro has them on backorder.
rmeuropean - no stock
autohausaz.com - no stock (they had one a month ago)

according to realoem - NLA

 

[Hans woonboot]

Je zou Oldtimerteile eens moeten bekijken.

https://shopware.bmw-oldtimerteile.de/en/voertuigtypes/e9-2-5-3-0-csil/34-brakes/brakes7/

View attachment 221225

In de VS heeft fcpeuro ze momenteel niet op voorraad.
rmeuropean - geen voorraad
autohausaz.com - geen voorraad (ze hadden er een maand geleden nog één)

volgens realoem - NL

 

[Hans woonboot]

Hello rsporsche, thanks for your help. I have ordered a new cylinder. Regards, Hans