brake booster installation

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jsspagg
Posts: 64
Joined: Fri Jun 27, 2014 3:11 pm
Location: Southern California

brake booster installation

Post by jsspagg »

It was easy to remove the brake booster :D

After a rebuild and sitting around for a while it's time to go back in. There seems to be a few things that confuse me including the use of this forum.

I tried to search for a write up on installing a brake booster but can't seem to find what I am looking for. I don't know if it is me, or if this forum is difficult to use as an archive to find and retrieve specific information.

I'd be surprised if no one has done a write-up on "installing a brake booster" but I can't find it. Anyone be able to point me in the right direction?

1980 series 1 euro- thanks.
1980 635 Euro
Under restoration
kronus
Posts: 125
Joined: Fri Jun 18, 2021 2:20 am
Location: SF

Re: brake booster installation

Post by kronus »

what is your actual question?

FWIW I google searched "site:bigcoupe.com booster" and pulled up every thread that has had the word booster mentioned in it ever. Maybe some useful nuggets in there.
jsspagg
Posts: 64
Joined: Fri Jun 27, 2014 3:11 pm
Location: Southern California

Re: brake booster installation

Post by jsspagg »

Kronus- my actual question is what order are things assembled and how to adjust the linkage.
There is the link to the brake pedal that appears it needs to be adjusted prior to installation. Bolt in place and connect to brake pedal.

Was looking to see if someone had a step by step write up of assembly process.

I also did a search for brake booster and saw lots of references to that component but did not find a "how to install" or "how to adjust".
1980 635 Euro
Under restoration
GRNSHRK
Platinum Member
Platinum Member
Posts: 3745
Joined: Thu Apr 08, 2004 3:24 pm
Location: Gilroy (SF Bay Area) CA

Re: brake booster installation

Post by GRNSHRK »

Jeff, I sent you the pages out of the "Big Blue Book" on the brake vacuum booster R&R but will post here as well, just in case anyone else is in need of this info \:D/

IIRC, I don't recall reading anything about adjustments required :-k
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Brake booster install 2.JPG (1.45 MiB) Viewed 558 times
:mrgreen:
Bobbo
1980 633 CSi Cypress Green/Pearl Beige
2017 X5 M Sport Xdrive 35i Carbon Black/Ivory White
2005 330 Ci ZHP Cabrio Imola Red/Bone/Black
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kronus
Posts: 125
Joined: Fri Jun 18, 2021 2:20 am
Location: SF

Re: brake booster installation

Post by kronus »

Yes, the pedal height adjustment is pure user preference. I adjust mine to make heel/toe feel comfortable.
jsspagg
Posts: 64
Joined: Fri Jun 27, 2014 3:11 pm
Location: Southern California

Re: brake booster installation

Post by jsspagg »

Thanks Bobbo!
1980 635 Euro
Under restoration
bmw633o1
Posts: 1
Joined: Fri May 10, 2024 1:03 pm
Location: Batavia IL

Re: brake booster installation

Post by bmw633o1 »

Hey jsspagg, I'm about to remove my booster on my 83 633 in the next two weeks. Question on the removal of the unit below.

1. Did you disconnect the brake lines and pull the full unit out then disconnect the booster?
2. Did you leave the brakes master connected to everything and just disconnect the booster at the master and the firewall?

Cheers,
1983 633csi
jsspagg
Posts: 64
Joined: Fri Jun 27, 2014 3:11 pm
Location: Southern California

Re: brake booster installation

Post by jsspagg »

I took everything apart. I am also replacing the master cylinder.
I don't know if you would be able to pull the brake booster with the MC in place.
1980 635 Euro
Under restoration
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