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Quikc-Q Bleeding brakes with the engine off?
tegwin - 28/4/07 at 10:15 AM

I want to bleed my brakes, but I cant run the engine...

The brakes are servo opperated and if I pump the peddle the servo is going to lock out isnt it?

Is it possible to bleed servo assisted brakes without the engine? if so how?

Chears

designer - 28/4/07 at 10:20 AM

just bleed as any other car. The servo just multiplies the effort on the pedal.

scottc - 28/4/07 at 12:16 PM

Best advice I ever got was to get a Gunson Power bleeder thing. Connect to a spare tyre and something like 10 PSI, and that will force the fluid through. hours quicker than doing it manually, and a one man job.

robertst - 28/4/07 at 04:18 PM

IIRC for cars with brake servo you fill the reservoir first, pump the brake pedal a few times until the pedal is hard, this is so the servo is filled, then bleed as usual

designer - 28/4/07 at 05:49 PM

Never pump the pedal. Use a steady, slow movement.

JoelP - 28/4/07 at 07:27 PM

sierras dont have any fluid in the servo, do they?

MikeRJ - 28/4/07 at 07:49 PM

quote:
Originally posted by robertst
IIRC for cars with brake servo you fill the reservoir first, pump the brake pedal a few times until the pedal is hard, this is so the servo is filled, then bleed as usual


For a remote servo perhaps, but with the normal type of servo that sits behind the master cylinder there is no extra place for the fluid to go.

robertst - 29/4/07 at 11:27 AM

sorry was thinking about the ABS... in the sierra manual it says to do this for cars with ABS...