brake issue

So ive been driving the 60 daily the past few weeks- the other day I was on a crazy steep hill near my job and was really jamming on the brakes-
all of a sudden the pedal went to the floor. Luckily my ebrakes working good

anyway all the lines are good/fairly new- didnt see any fluid coming from the wheel cylinders.
The only place i noticed some fluid was around the brake fluid reservoir cap.

Any idea why this would happen? A few pumps and I had good pedal again.


sound like just bad MC?

zabo wrote:So ive been driving the 60 daily the past few weeks- the other day I was on a crazy steep hill near my job and was really jamming on the brakes-
all of a sudden the pedal went to the floor. Luckily my ebrakes working good

anyway all the lines are good/fairly new- didnt see any fluid coming from the wheel cylinders.
The only place i noticed some fluid was around the brake fluid reservoir cap.

Any idea why this would happen? A few pumps and I had good pedal again.


sound like just bad MC?

Possibility that you boiled the fluid at the wheel cylinders. Crazy steep hill + drum brakes = lots of heat. I would recommend a complete fluid flush and re-bleed.

Out of curiosity, do you have a single or dual circuit m/c?

zabo wrote:sound like just bad MC?

That would be my first guess. If you end up replacing it I'd consider upgrading to a dual circuit MC too. Not sure how much trouble that would be for a '60 but it might be worth it.

i dont think i boiled the brakes- I had just started the car- pulling out of the parking lot at work.

its a single master cylinder

You probably have a oring with a flat spot on it in the mc. Works most of the time, and suprises you when it feels like it.
If you had a dual circuit setup you would have only lost half of your brakes. It's more expensive, but who cares if it saves your life, or an expensive body shop bill.

i think i figured it out- bad grommet where reservoir hose goes in- under a lot of pressure fluids coming out there

so i guess I was wrong- got a nice new german grommet - no leaks there now.
Replaced the Master Cylinder as well. Seems to have good pedal, only when im on a hill or just apply constant even pressure to it will it go to the floor


driving me crazy- i havent pulled the back wheels off yet- but im not seeing any fluid dripping around the wheel cylinders

How's the main steel line under the pedal cluster? Rust attacks there unnoticed...
Might be a hole small enough to hold pressure most of the time.

Randomly going to the floor almost has to be the master cylinder "bypassing". What kind of cylinders are you using?

ill check out the lines again

using Vargas

Those are pretty good. Is that the brand of master cylinder too?

yep - my sons taking the wheels off now as i relax in the ac- going to double check all the wheel cylinders- then prob try replacing the soft lines in case they may have collapsed inside or something.

all the hardlines look good.

Collapsed lines wont normally do that but good idea to check anyway. What kind of reservoir?

stock 60 metal reservoir