M-Series (M1, M3, M5, M6)General M-Series Discussion - If it does not fit into a more specific M Category above, please place it in here. In addition, previously archived M-Series discussion is located in this section.
For the following E24 M6, E28 M5, cars 533,535,m535,m5,633,635,m635,m6,735.
This Do It Yourself (DIY) is to re-build the Brake Servo Booster #34331156925
It includes a step by step procedure to repair the internal rubber seal and 5 o-rings.
I just up dated this post DIY, I have added a new shaft seal and a how to replace the seal.
This repair needs to have the booster removed from the car.
Tools needed: Dremal, vise, bench grinder, battery drill motor with reverse, 1-1/8 inch deep socket, 13mm 1/4 in drive socket with an extension into the drill motor, blade screw driver, 10mm drill bit or 3/8 inch metal drill bit, electric drill motor with 3/8 chuck.
I also added a new helpfull hint for the re-build.
Where the grub screw, screws into the booster cylinder there can be a burr created by the grub screw, on the interior. This burr can cut the 38mm O-ring, and also damage the 2 white high pressure teflon piston rings.
Thanks to (tn).
When I receive these new parts, I will revise the price.
New-Update DIY rebuild kit for the Brake Servo Booster
Hi Forum Members,
For the following cars, e28,e24,533,535,m5,m535,633,635,M6,M635, and 735e32only.
I now have all of the interior components for the complete re-build of the Brake Servo (booster). I have received the new teflon interior high pressure piston o-rings. I installed these new parts into my M6 over the weekend. The road test was a success, all of the parts work as they should!
The new up-graded kit includes the 5 internal rubber o-rings, the 2 teflon piston o-rings, and a new shaft seal.
I have also up-graded the Picasa Link, I took more photos and added more captions to show the correct method that I used in the assembly of the booster.
The new price is $24.95 + shipping $1.95 USA, TOTAL $26.90 USD.
International is also $24.95 + shipping $3.95 International TOTAL $28.90 USD.
Here this the link to the DIY, step by step instruction, of the booster repair.
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