Brake Pedal not returning

Greetings,
The spring in the master cylinder is quite weak, so I would check the places where there could be resistance.....such as the pedal pivot points, clean out the dirt from the box and lube the shaft's and any linkage involved with the brake assy. Also make sure that the floor mat/carpet does not stop the pedal return.
Just a thought, regards Ian.

 

Greetings,
The spring in the master cylinder is quite weak, so I would check the places where there could be resistance.....such as the pedal pivot points, clean out the dirt from the box and lube the shaft's and any linkage involved with the brake assy. Also make sure that the floor mat/carpet does not stop the pedal return.
Just a thought, regards Ian.

Yes, that sounds entirely reasonable. Especially the part about the carpet binding (they are new). Thanks for your suggestions. I'll give them all a try.

 

Mine was corrosion in the M/C, bled 4 bottles of fluid through it which came out clean, wasn't happy, so I stripped it & it was full of muck & crud - the fluid had made a neat passage through the corrosion. Strip & re-sleeve in stainless, with new washers & it's perfect.

The RHD cars have the floor mounted cylinders - lowest point in the system & a natural place for the crud to settle.

Start with the carpeting - way easier than pulling off the M/C.

Ciao
Greig

 

I removed the carpet and cleaned out the pedal box, but that didn't help. I then disconnected the master cylinder and found that it was still "sticky". That only left the pedal's shaft as a possible culprit. I worked the pedal back and forth while working grease into it. That seemed to free it to the point of being workable. I just wish there was an easy way to keep the shaft lubricated.

Thanks for your helpful suggestions.

 

Brake Pedal not returning

Hi,
Glad you got things to work. I may be that the best thing to do in the long run, is pull the box and strip it and clean/lube the shaft's properly.
Regards Ian

 

as it could be useful in the future , i have already seen old rubber brake tubes responsive of such a thing , you push on the pedal , brake liquid goes to the brakes but as the rubber of the tube is in bad condition it do not allow the liquid to return to the master cylinder( pressure enlarging the tube at one place and just further it's make a kind of cork ) , it seems strange but it's real !