Brake set up - issues last bit left HELP!

[ABZY]

Hi

I have a fully completed car running and driving but struggling to get the brake set up working. Alot of the set up is newly replaced so can see whay issue is.

I have a RHD 2800cs 1971 which were originally LHD and converetd in the UK. It has a the set up where in effect there are 3 brake cylinders set-up versus 2.

The front brakes are basically locked on so can disconnect the last one to get car moving and run etc but not the best as it would be if all 3 functioned.

Does anyone know what I can do to resolve this??? I may have used incorrect terminology as I am not a mechanic just trying to reiterate what I got from the garage.

thanks

Abzy

 

[Sven]

I am not familiar with the RHD setup. If there are not supposed to be three cylinders then perhaps that is the issue. Did the brakes work before your replacement work? Some other guesses: front calipers frozen from sitting so long? swollen rubber brake lines? Start eliminating issues. You could pull off one of the front calipers and check to make sure the pistons can move in their bores.

 

[dj_efk]

If you have the same setup as mine where the car was converted to RHD by BMW after arrival in the UK (mine has at least 12 bleed nipples!!!) then it will never be a particularly satisfactory setup. My plan was going to be to get a custom setup made for mine as I still can't get rid of some of the air in the brakes.

 

[rodspock]

Abzy,

I assume your 3 brake cylinder set up refers to the three main components under the bonnet of the RHD cars. Mine car is a factory RHD and has a master cylinder on the firewall in front of driver, and two boosters on the left hand side of the engine bay. If that is your set-up then this is normal.

What is also common is that the pistons in the callipers can seize if left sitting too long. I agree with Sven - you should remove the callipers and ensure that the pistons are moving. If you have rust, Wallothnesch sell replacement seals and pistons. See:

http://www.wallothnesch.com/bremse/bmw-2-5-cs-3-0-csl-e9/katalogbild-34-01.html

Good Luck,

Rod
(Brisbane)

 

[sfdon]

Do not remove the calipers- remove the pads and gently and slowly step on the brake pedal.
You will soon see if your pistons are stuck.