Brake Vacuum Pump

[Niam]

Hi,
I have a Mercedes S350 2010 Diesel, had a experience on Thursday where the brakes went hard and could not stop the car. Recently had a replacement brake pump fitted, Would the vacuum brake pump work if it was either a pump from a petrol or a Diesel?

 

[EmilysDad]

Hi,
I have a Mercedes S350 2010 Diesel, had a experience on Thursday where the brakes went hard and could not stop the car. Recently had a replacement brake pump fitted, Would the vacuum brake pump work if it was either a pump from a petrol or a Diesel?

Petrol cars normally use a vacuum servo & don't need a pump

 

[LostKiwi]

As above petrol cars use manifold vacuum (except some turbos). Diesels don't have manifold vacuum so need a pump to provide it.