Technical Brakes

New master cylinder, new power booster, everything bleed,some pedal when off , no pedal when running???

 

Vacuum leaks to the booster?


Sent from my iPad using H.A.M.B.

 

...or IN the booster. Vacuum pulling diaphragm forward...

 

Gee, welcome to the HAMB trouble shooting service, nice to meet you.

 

Sounds like the pushrods from pedal to booster and booster to master cylinder may not be adjusted right.

Sent from my Moto G Play using The H.A.M.B. mobile app

 

is the rod adjusted right when you put your foot on the pedal it should drop about 1 " when you crank the car

 

Might as well join the HAMB team? Ya got pics of the car? What kind of car? Complete your profile?

 

Is THAT what he wants?

Ben

 

Just because parts are new doesn't mean they are good. I had a pickup truck that I had to put 3 new mastercylinders on before I got one that worked. On a power boosted system, the pedal should be rock hard with almost no free play with no vacuum on the booster. It must not be bleeding completely. I like to use low pressure air on the master cylinder to bleed brakes. Make certain that you don't have any places in the system that ca trap air like T fittings or couplers that are larger than the lines internally.

 

We sure would like to know more info First complete your profile,then come back and give the info on your vehicle....providing it falls into HAMB REQUIREMENTS...(nothing later than a 1965)

 

drum brake adjusters adjusted "out" far enough?

 

Another 3 blind men examining an elephant post... be nice to have some real information.

 

O.K., Bob... I wanna buy a vowel.

 

A bowel... oh.... a VOWEL....

 

Try bleeding brakes while car/truck is running, one person pushing on the pedal one person turning the bleeder valve. Don't use a speed bleeder.