53 replies to this topic

[TOMMO0302]

Brake hoses old/bulging?

[Big_Adam]

hoses are all fine. they all look the same. no buldges or kinks.

edit

well i mean i can't see how they have broken in 5-6 days.

Edited by Big_Adam, 12 July 2006 - 12:40 PM.

[Jammy]

If the rubber hoses going to each drum are old they can perish and stretch when your press the brake pedal, giving a spongey feeling.

Otherwise I think its the master.

[Big_Adam]

well i was flicking thro the hyanes and it dose say to remove the pressure sensor. think it could be that?

i really hope its not the master. i really can't afford the 100 squid + for a new one.....then again i can't afford the 30 squid + for new seals either.

[Jammy]

What do you mean by the pressure sensor??

[Big_Adam]

i got a 82 car. so i have the square type master cylinder with a pressor snecor in the side. later ones have a cap pressure sencor insted. its basicaly a little rod the gets pushed in and out. somthing like that,.

edit.

right. time to exsplain a bit.



thats basical my master cylinder. the type i have is a black band (bugged if i know what that means, just got a black band on it) and has a failer pressor sencor thingy in the side. during bleeding it should be removed. but it can't......beacuse i broke it. on the later yellow band version which are round like the master cylinder bit on brake servo system they have a cap that dose this insted. so you don't have to remove anything. these look like this:

Edited by Big_Adam, 12 July 2006 - 02:11 PM.

[Nial]

How well adjusted are the drums?


When you're adjusting them do you back off the adjusters so the wheel can rotate freely as
described in the haynes manual?

When did you last adjust them?



Nial

[Big_Adam]

How well adjusted are the drums?

When you're adjusting them do you back off the adjusters so the wheel can rotate freely as
described in the haynes manual?

When did you last adjust them?

Nial

all adjusted. but i'll give them a re-tweak as i did only do the back ones. manily bacuse thats were i did all the work

[Jammy]

I see.

[Nial]

all adjusted. but i'll give them a re-tweak as i did only do the back ones. manily bacuse thats were i did all the work

As I said before, they've got to be adjusted up _tight_.

I used to run a mini with drums all round when I was a student (long time ago) and being broke did
all the work on it myself. As I said I must have put gallons (well OK, pints) of brake fluid though the
system trying to get a decent pedal but never could. I assumed I wasn't bleeding it properly.

One time I was stuck for time before an MOT and had to leave it in to a local garage to have the
welding on a new pair of sills finished off. When it came back it had the best brake pedal I'd
ever felt on it. All the guy had done was adjust the brakes up tight.

This sounds just like your problem.

Nial.

[Sprocket]

errmmm.......no.....should i have?

wait. you having said that means i should have,

If you leave the cap tightly on, where is the air going to get out?!

The cap is vented

[Big_Adam]

As I said before, they've got to be adjusted up _tight_.
Nial.

are you telling me to adjust my brakes so their on all the time?!? well the last time i had a drum that was tight i came rather close to setting my car on fire. the drums got so hot they would steam away very nicly with a little snow (this is back in winter) now being summer i'd rather not set my car on fire or blow my tires up with the heat.

edit

also it isn't i can get a decent pedal presusre its that i get NO pressure till the 3rd pump. if i keep my foot down so there is pressure on the pedal then it will hold pressure. if i leave it for a few secs all that pressure go's

Edited by Big_Adam, 12 July 2006 - 08:28 PM.

[Big_Adam]

alright. i have a cunning plan. i may be able to get a later master cylinder like this one



and i know i can get some pipes to fit that metric cylinder to my imperial pipes. so should i do that and see if it solves my problems as i may be able to get a new master cylinder cheap. but the last time i asked about the master cylinder it had no bottle.

[TOMMO0302]

I would have thought that unless its faulty, there won't be any air trapped in a cylindrical unit...much more likely any other part of the system.

When you said its unlikely the pipes have failed in 5/6 days, did you mean you replaced them 5/6 days ago? Or everythng was fine before you replaced stuff. if the latter, surely the same logic should apply to the master cylinder?

[Big_Adam]

every thing was fine untill i started to change bits. i did the passenger side brake cylinder. was a little spongey but i could stop. then decided to change the driver side rear cylinder then it all when pear shaped.

you do make a good point. what the hell could it be....apart from air. do i need to do yet more bleeding. with one of them easy bleedy thingys. can;t see how thats going to get the air out if regular bleeding dosen't