removal of master cylinder

[Mr Skint]

right, im trying to change the master cylinder as its the last possible thing that could be wrong with the brakes. The problem is i cant seem to seperate it from the servo, is there some trick to it?

 

[Alex]

iirc it's 2 bolts then pull as it's a tight fit into the servo

 

[Mr Skint]

hm, well i tried that, and a crowbar and ended up kicking the crap out of it too. Best go out and give it another go

 

[Alex]

I'm sure that's all i did last time i removed one

 

[paul.spencer]

Hey Tom,

Yeah, should be very straight forward - I'll bet the seal behind it has disintegrated or wasn't replaced last time and the thing is well rusted in place now. Maybe try soaking the area overnight with WD-40 (or whatever you like to use). New master cylinder should be installed with a new seal.

Cheers, Paul

 

[Mr Skint]

well, i got it off and replaced it with a second hand one that i know worked as i drove the car round the scrappie

I got it fitted and all back together but didnt have time to bleed it up before work. Thing is if this doesnt work then i dont know what to do next as ill have replaced pretty much everything

 

[paul.spencer]

well, i got it off and replaced it with a second hand one that i know worked as i drove the car round the scrappie

I got it fitted and all back together but didnt have time to bleed it up before work. Thing is if this doesnt work then i dont know what to do next as ill have replaced pretty much everything

So how did you get the old M/C off and why was it difficult to remove?

Did you install a new seal or did you reckon the one from the scrappie was in good enough shape to reuse?

Can't remember - what was the original problem? spongy brakes, no brakes, a leak somewhere? Was it you that had a mysterious loss of brake fluid?

 

[Mr Skint]

originally it had a leaky rear cylinder but i replaced both of those and when bleeding them up they would feel fine until the engine was running then so soft. So i bleed them for about an hour and no change. Then someone suggested the clearances on the rear shoes but ive checked those and there are no leaks anywhere either

 

[jezzasin]

It was me with the fluid loss, and i've changed both rear cylinders and the copper pipe from the flexi to the drum, now i have the same problem as you tom, i've bled it through and everything is fine when the engine is off but when it's running it goes soft, don't think it's my master cylinder as that was working find bbfns the rear went, any info to help us both would be good