why is there a vacuum hose that goes to the big black round thing with the master Cylinder in the middle? what happens if you don't have this blah blah blah?
cheers
andy
Start your car, roll it (20 miles) then turn of your engine, give a few bumps on the pedal, you'll see that after 2-3 bumps you won't have brakes.
That black drum is a servo, it uses vaccum from the engine (inlet manifold) and it boosts up the pressure in the master cylinder, so you have effective braking...