[T2] Air in brakes problem continues

[beney14574 at aol.com]

Hi David,

I have had a friend pumping the brakes.  He pumps the brakes until the pressure builds and holds, I open the valve, pedal goes to floor. Repeat until no bubbles.  I am running out of patient friends!

The lower reservoir looks pretty solid to me, the upper one exterior is peeling on the outside though. I agree the hand pumps are garbage, mine will not hold pressure.  

The Vaseline trick sounds interesting. I will see if I can find an inexpensive vacuum pump tomorrow ( any suggestions where to find one?). 

Really want to get back on the road.


Clear Skies,

Brian Eney


On Feb 16, 2014, at 8:28 PM, David Kelly <volknstein at yahoo.com> wrote:

> Well if your master is basically an o ring piston. If those seals go bad, in a closed system with no leaks, the pedal will slowly(or quickly) go to the floor with steady pressure. Having spongy brakes that pump up with several pumps sounds more like air in the line. How are you bleeding them? Those hand pumps are garbage in my opinion. It is too easy to suck air in around the fitting when you loosen Plus it is a lot of work for not much suction. I've tried using Vaseline  around the fittings with success with a good vacuum pump attached to the bleeder valve. It takes some time and a lot of fluid to suck out all the air. Just don't let the reservoir go empty while you are doing it. Having a second person pump up the brake and stand on the pedal while you quickly open and close the valve works too, it just takes longer. I like the plug in vacuum pumps the best with Vaseline around the base of the bleeder valve to prevent air leaks. Good luck.
> David
> 
> PS, 69 bus lower reservoirs can be very hard to find, NLA. And the old ones are very brittle. I'd try to rule out air in the lines before cracking the master cylinder open. 
> 
> Sent from my iPhone
> 
> On Feb 16, 2014, at 4:38 PM, Brian Eney <beney14574 at aol.com> wrote:
> 
>> 
>> I am still having no brake pressure.  I have bled the brakes and probably gone through a gallon of fluid by now.  Pedal will now pump up and hold pressure (after several pumps). However, after I stop pumping pedal and release the pedal the next time it is back to the floor.
>> 
>> Master Cylinder??? Still more air in the lines?
>> 
>> COMPLETELY LOST and frustrated!
>>