Author Topic: Just took the brake booster and master cylinder off....now have questions??????  (Read 3780 times)

ncsurfer

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Hi Guys,
I am slowly but surely getting this 280sl ready for the 50th anniversary, but as usual, have more questions. How does the brake fluid reservoir come off of the master cylinder? When I put it back together after sand blasting and painting, should I put in new gaskets/grommets? Any tricks to use in sand blasting the brake booster? Is there a gasket that I need to buy for the brake booster? Thanks guys......
1970 280sl Horizon blue/navy, automatic
1973 450sl Silver/red, automatic
1985 280sl red/beige, 5 speed
1995 E320 Cab. Black/Cream, Auto
2016 Porsche Boxster Spyder
2008 Porsche Boxster RS 60 Spyder
1964 MB L1113 Firetruck

IXLR8

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Hi NC--

The brake fluid reservoir is attached to the top of the master cylinder with a hollow screw located at the bottom of the reservoir. When reattaching, Use new gaskets and grommets.

the other Joe

ncsurfer

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Thanks, will do. I appreciate the help. The service manual didn't show that.
Steve
1970 280sl Horizon blue/navy, automatic
1973 450sl Silver/red, automatic
1985 280sl red/beige, 5 speed
1995 E320 Cab. Black/Cream, Auto
2016 Porsche Boxster Spyder
2008 Porsche Boxster RS 60 Spyder
1964 MB L1113 Firetruck

Naj ✝︎

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Hi NC--

The brake fluid reservoir is attached to the top of the master cylinder with a hollow screw located at the bottom of the reservoir. When reattaching, Use new gaskets and grommets.

the other Joe

This is true for the 230 m/c.
On the 280, the resevoir is held in place by just 2 rubber grommets. Suggest empty both sides of the reservoir using a syringe and the just pull it off
Refit with new rubbers...

Naj
68 280SL

ncsurfer

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Thanks, that was what I thought, but wasn't sure. I blasted the master cylinder with the reservoir on it and all holes plugged. I am considering buying new reservoirs and rubber grommets while I have it off.
1970 280sl Horizon blue/navy, automatic
1973 450sl Silver/red, automatic
1985 280sl red/beige, 5 speed
1995 E320 Cab. Black/Cream, Auto
2016 Porsche Boxster Spyder
2008 Porsche Boxster RS 60 Spyder
1964 MB L1113 Firetruck

UJJ

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I just re-did my brake system too, including the booster.
There is only one seal (o-ring) where the master cylinder connects to the booster. Furthermore, I replaced the little filter which is located at the plunger.
You have to take the little sheet metal cap of to get to it.

Urban
Urban Janssen
Grass Valley, CA
1968 280 SL - 4speed manual
173 anthracite grey