Motive Bleeder/Coolant

[Paul]

Porsche shop manual on page 47-7 says bleed brakes at 1.5 bar or about 22 PSI.

[JFP in PA]

Originally Posted by Paul

Porsche shop manual on page 47-7 says bleed brakes at 1.5 bar or about 22 PSI.

Which is too high and will cause the reservoir seals to fail. We have had more than one car in the shop for exactly this reason.

[paulofto]

Someone should tell Pelican to revise their tech article if 25 psi is too high.

This is right out of the article and 101 Projects book.

https://www.pelicanparts.com/techarticles/Boxster_Tech/48-BRAKES-Bleeding_Brakes/48-BRAKES-Bleeding_Brakes.htm

"The procedure is to add fluid, attach the bleeder to the top of the reservoir cap, and pump up the bleeder bottle to about 25 psi using the hand pump."

I did a bleed last summer using the Motive bleeder exactly as the tech article calls for and did not have an issue. I know I am only one guy and maybe got lucky but I'd hate to see anyone else have issue simply because they followed some flawed instructions.