Brake fluid gone..

[Ford coupe]

Got the 36 out today and no brake pedal..No fluid in master cylender and no sign of leakage so ??? When built i used silicone fluid as everyone told me that is best so wonder if it evaaporated..

[19Fordy]

It had to leak out somewhere. It doesn't evaporate.

[Kube]

Originally Posted by Ford coupe

Got the 36 out today and no brake pedal..No fluid in master cylender and no sign of leakage so ??? When built i used silicone fluid as everyone told me that is best so wonder if it evaaporated..

Not everyone told you it was the best.
Pull the drums and you'll likely find the leak(s). It sure didn't evaporate.

[Ggmac]

Wait is it april 1 , 36 were mechanical. Okay not a joke . , since you converted it did you also add a power booster ? If not my idea is out the window aka not valid

[V8COOPMAN]

I wouldn't use Silicone brake fluid on my wheelbarrow....even if it did have brakes. DD

[Joeyv]

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19fordy is correct. I had the same situation as you. I was losing brake fluid, no brake pedal, with no obvious leak. It took a while to find the leak. It was not obvious at first, but eventually I found the leak in the right front drum’s brake cylinder. Keep looking, it’s there somewhere!

[KiWinUS]

Originally Posted by V8COOPMAN

I wouldn't use Silicone brake fluid on my wheelbarrow....even if it did have brakes. DD

I second that!!

[tubman]

Once I had it in my '68 Corvette (when I did a complete brake rebuild), it was fine. Getting it in and bled was such a pain in the ass that Ill never use it again. It's just not worth the effort.

There has to be a reason that no (none that I know of anyway) automobile manufacturers use it OEM.

[Lanny]

A couple reasons new car manufacturers Don't use dot 5 is that it would be
way more costly to put in ALL the new cars made, compared to dot 3 or 4.

The second reason is dot 5 don't work well with the super fast pumping
action of the anti-lock brake systems.




.

[V8COOPMAN]

Originally Posted by tubman

There has to be a reason that no (none that I know of anyway) automobile manufacturers use it OEM.

That's a "no-brainer"! This way, Mr Goodwrench et al can "urge" you to bring the vehicle in every two years for a recommended fluid R&R. Maybe I've been lucky, but I've never been a big advocate of changing brake fluid. One more thing.....our STOCK '37 Ford coupe has never, ever leaked one drop of brake fluid. DD

[Ford coupe]

Ok looks like i have to pull hubs so as i dont have the pullsr for the rear ones ill try front first and cross my fingers lol

[KGS]

Originally Posted by V8COOPMAN

I wouldn't use Silicone brake fluid on my wheelbarrow....even if it did have brakes. DD

The other side of the coin. I don't use Silicone brake fluid in my wheel barrow either. However, I've had it in my '39 coupe since 1991. Never leaked, always a hard pedal and will slide the tires easily. All I've ever done is adjust the brakes when needed.
Ken

[Frank Miller]

I like the dot 5 because it is not corrosive to paint. It also is not hydroscopic. I've hed it in my 49 for 45,000 miles and while I do need to add it periodically I do not have the other problems.

[flatford8]

“.our STOCK '37 Ford coupe has never, ever leaked one drop of brake fluid. DD“
Are we back to the April Fools thing again????....... Mark��

[V8COOPMAN]

Originally Posted by flatford8

“.our STOCK '37 Ford coupe has never, ever leaked one drop of brake fluid. DD“
Are we back to the April Fools thing again????....... Mark��

Well, you're right....it is June already. But I ain't lyin'....that sucker don't leak for squat! DD

[Kube]

Originally Posted by V8COOPMAN

Well, you're right....it is June already. But I ain't lyin'....that sucker don't leak for squat! DD

I believe you. I have very, very rarely had any leaks in my vehicles brake systems.
Sure, age can effect rubber pieces but again, properly built... no leaks.

[Kurt in NJ]

Neither my modeA, or 36 will leak brake fluid, I used to have a 39,and a 46, got rid of them because of brake failures, leaks, pulling, grabbing brakes---
If you buy new wheel cylinders take them apart first to see if properly made-- holes drilled to top for bleeder, at center for fill, --- if re sleeved take them apart to inspect/clean out the chips from the machining process
Proper restoration to original specifications will eliminate brake fluid leaks and ensure reliable brakes

[richard crow]

in the master cyl there is a check valve it,s purpose is to keep low pressure in the system. if the car sits for a long period of time it bleeds off .the wheel cyls relax & leak no car was built to sit for long periods of time. there is three things you can do to reduce this from happeing one way is install an after market check valve. second way is every week or two step on the brake pedal. third is drive the car . cars were meant to be driven i have seen a lot of traled show cars that are dry. no brake fluid no eng coolent empty battery empty fuel system drive your car thats what it was made for