brakes problem...

maybe You will know what to do...in Renault Club Poland, Retro-Renault Club Poland, Gregor (from Castles in Slovakia), my father...nobody can't help me...

I have very dofficutl problem with brakes...there isn't air in istalation, I've new brake cables, rear brake jaws, front brake blocks and when I put down the brake pedal:
- sometimes brakes work but after some time - with delay (put down the pedal, wait 1-2 seconds and then R4 starts braking)
- sometimes brake pedal gets down with no resist, sometimes it's work good
- sometimes braking is "strong and quickly", sometimes it's very weak (just like release brake)

I have no ideas how to make it good :s25:...I've 1 month work with brakes and I'm sick of brakes :a045:

Did you change main brake cilinder :naughty:

yes...also the rubbers in braking pomp are new :s25:

I don't know why, but the brakes now are working :a025: I've only change back of brake drum (part witch keeps the brake jaws)

now I have the same problem just like I wrote in first post :(

HeLp...

Very strange ???
Did you bleed the brakes correctly? This means all four wheels and then the bleed valve on the master cylinder (you can remove a rubber plug from the inner wing to access it easier).
Check also that the brake pedal pushrod does not contact the piston with the pedal released (it should have a little free play.
Are you sure that you assembled the master cylinder correctly? :whistling:

Year of manufacture...? Model?

On Firt generation of R4 GTL (1982-1984) on frot wheels is drum breaks, and it is very hard to make breaks to work properly....