08-12-2012, 04:27 PM
Location: Orange, Calif, USA
Join Date: Feb 2011
Mein Auto: 87 M6 (4-87) Red/tan
Hydraulic brake servo booster rebuild service
Hi Forum Members,
For cars, e24,633,635,m635,m6,L6, e28,533,535,m535,m5, e32,735 only, e23,733,735,745.
For part # 34331156925 and e23 part # 34331152825, both part numbers share all of the 10 piece repair kit, they are identical.
I recently rebuilt another hydraulic brake servo booster, and I was amazed at how the rubber o-rings were deformed. They are now an oblong shape. The large o-ring 38.0mm x 3.0mm, at the front of the booster. It now measures 2.55mm high instead of 3mm. And is 3.28mm thick, were it should be again be 3.0mm. And it is noticeably more brittle. The smallest o-ring was brittle and it broke when removed.
I am now offering to rebuild your booster for you, using my 10 piece repair kit.
I am going to charge $85.00 + shipping back to you. Cont USA only. USD
If you send me your address I can give an accurate shipping quote.
Just send your booster to me, with a $ check. PayPal add 4%
I also have one spare rebuilt booster, that I can send to you. And you return your old core to me, shipping on you.
Same price of $85.00 + ship + $60.00 core. USD
PayPal add 4%