6 replies to this topic

[BennMurray]

I've got a 1995 Mini Cooper and I'm currently trying to get my brakes done. I've replaced several parts including new caliper seals, braided hoses, rear wheel cylinders etc.. I used the one man bleeding kit on all the brakes, managing to get a steady flow of fluid from all bleed nipples. However I am still not getting a firm brake pedal. Ive checked that all connections were tight, correct bleeding sequence was used and copper washers were fitted to necessary connections on the new lines. Im thinking it could be the master cylinder? If so, how can I get tell that it is? Any thoughts?? Thanks

[lrostoke]

have you adjusted the rear shoes up enough..

 

wind the adjuster in until the wheel almost locks then back off a quarter turn.

[cal844]

yeah. tho test MC and servo, pump the pedal, hold the pressure and start the car, the pedal should creep half an inch.

[BennMurray]

yeah i wound up my adjusters on the rear. Cal844, I'm unable to hold any pressure thats the thing, I can keep pumping and get a build up of pressure but theres no way of maintening it. I was thinking today though, I replaced the seals on my calipers but I didn't smear a thin film of brake fluid around the seals when putting the piston back in to position. Is there a chance that with the seals being dry, the piston might of nipped the seal on its outstroke causing my lack of pressure!? Thanks for the replies..

[Gremlin]

When you get pressure by pumping the pedal, if you hold the pedal down, does the pedal then slowly go down as if you've got a leak, if so, it might be the seals gone in the master cylinder letting the fluid back into the reservoir

[cal844]

do you have the calipers the correct way up? (i THINK it is bleed nipple to the top)

[tiger99]

Correct! You can be completely certain that they must be at the top because air is lighter than fluid and rises to the top, and it is air that you want to release.