What is this hose for?

Post by **Sidney'61** » Thu Jul 02, 2009 8:03 pm

I'm sure theres a simple answer but as it's not standard I don't really know what it carries.
It runs from the brake servo.<br>

<br>
to the top of the manifold<br>

<br>Thanks

Post by **PSL184** » Thu Jul 02, 2009 8:07 pm

Vacuum for the servo from the engine....

Post by **PSL184** » Thu Jul 02, 2009 8:08 pm

ps. as a minimun, I would change that nasty bit of hard plastic pipe coming from your fuel pump for a proper piece of fuel line....

Post by **alex_holden** » Thu Jul 02, 2009 8:10 pm

Yes, the vacuum from the inlet manifold is what powers the servo.

Post by **Sidney'61** » Thu Jul 02, 2009 8:11 pm

PSL184 wrote:Vacuum for the servo from the engine....

Thanks Rich, but in simple terms what does it do?

P.S. Don't worry the pipe is being changed.

Post by **Sidney'61** » Thu Jul 02, 2009 8:13 pm

Ok, thanks Alex.

Post by **PSL184** » Thu Jul 02, 2009 8:17 pm

The servo is a mechanical assistance device - from your basic physics, you can't get owt for nowt so in order to assist the brakes it needs a force to act upon it. Inside the servo is a diaphram and the force is applied from the vacuum provided by the engine. This is stored in the servo until you need it when pressing the brake pedal....