DIY Brake booster rebuild E24 M6,E28 M5 - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 02-23-2012, 09:38 PM
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DIY Brake booster rebuild E24 M6,E28 M5

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.

Read the captions at the bottom of each photo.

https://picasaweb.google.com/1135658...nZ_Z7f6JrUyQE#

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.
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#2 (permalink) Old 03-19-2012, 08:06 AM
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New update, I added the white teflon (2) high pressure o-rings

Hi forum members,

For the e24 M6, e28 M5, 533,535,M535,633,635,M635,735 e32

I located a supplier for the internal white teflon (2) piston rings. I should have them in about 15 days.

I also found a supplier for the internal shaft seal at a lower price, 9.5mm I.D. This will take about 8 weeks to manufacture.

Then I will have all of the interior replacement parts, a complete repair kit, for the brake servo/booster.

Here is the photo link to the DIY re-build.

https://picasaweb.google.com/1135658...nZ_Z7f6JrUyQE#

Read the captions at the bottom of each photo.

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.
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#3 (permalink) Old 04-24-2012, 05:35 PM
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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.

https://picasaweb.google.com/1135658...nZ_Z7f6JrUyQE#

I am also offering a QUICK FIX kit, this includes just the 38mm o-ring, and the shaft seal only.
Price is $7.95 + $1.95 shipping USA TOTAL $9.90 USD.

International is also $7.95 + $3.95 shipping International TOTAL $11.90 USD.
See the Picasa link above to order, and pay by PayPal. Or to send an e-mail.

Thanks, Jay
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