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-   -   N52 Vacuum Pump (http://forums.pelicanparts.com/bmw-3-series-e90-2006-2012/1001465-n52-vacuum-pump.html)

2007328xi 07-05-2018 11:47 AM

N52 Vacuum Pump
 
My 2007 E92 with the N52 engine started having a hard brake pedal. The brakes work just require a lot of effort. In try to diagnose the problem I connected a vacuum gauge to the vacuum pump to see if that was the culprit, reading was very low on the gauge but I cannot find a source for what is normal or expected value. Anyone have a suggestion.

thanks

Dmitry at Pelican Parts 07-05-2018 12:02 PM

Any brake booster requires a minimum of 18” vacuum to operate efficiently. Anything less than that will contribute to the pedal being harder to push.

2007328xi 07-05-2018 12:28 PM

Thanks for the fast response, is there a tech article on the website on how to replace? I can not find one.

Dmitry at Pelican Parts 07-05-2018 12:50 PM

Quote:

Originally Posted by 2007328xi (Post 10097193)
Thanks for the fast response, is there a tech article on the website on how to replace? I can not find one.

No problem, glad to help out. Unfortunately we do not have one on the brake booster for the E9x platform, I was able to find one for you though - link below. Please let us know if you have any other questions or if we can assist with any part needs in the future.

Hard Brake Pedal DIY (e9x) - vehicles up to 09/2007


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