Alloy Brake Calipers & Bleed Nipple Problems.

BeenThroughItAll

londonTiger wrote: »

Manaufacterers recommend that when you wind back the piston that you open the bleed valve and let the fluid drip off the nipple instead of popping open the master cylinder and pushing the fluid all the way up the system.

Really? Care to back that up with a reputable source? Can't say I've ever known a manufacturer to encourage letting a corrosive fluid drip out of a system, so I'd be intrigued to know which of them is.


I'd love to know if there's any opportunity for me to introduce definate improveness into my normal servicing routine.

londonTiger

The source is: BBC

AdrianC

londonTiger wrote: »

The source is: BBC

Well, there we go. That's authoritative.... At least link to the BBC article, eh?

JustinR1979

I crack the nipples, can control it easier than possible overflowing from the reservoir.

nobbysn*ts

BeenThroughItAll wrote: »

Really? Care to back that up with a reputable source? Can't say I've ever known a manufacturer to encourage letting a corrosive fluid drip out of a system, so I'd be intrigued to know which of them is.


I'd love to know if there's any opportunity for me to introduce definate improveness into my normal servicing routine.

I guess they assume if you can manage to crack the nipple open, and you're winding the piston in, you're bright enough to know to put a piece of tubing on, and stick the other end into a container.
Ah well, I guess they have to spell that out as well now.

colino

Why would you have an overflowing reservoir just by pushing the pistons back? You don't use brake fluid so the level drops because of friction material wear, accommodated by the low and high on the reservoir, or you've got a leak.

nobbysn*ts

colino wrote: »

Why would you have an overflowing reservoir just by pushing the pistons back? You don't use brake fluid so the level drops because of friction material wear, accommodated by the low and high on the reservoir, or you've got a leak.

depends on if you top it up at the service, or just let it keep dropping.

JustinR1979

colino wrote: »

Why would you have an overflowing reservoir just by pushing the pistons back? You don't use brake fluid so the level drops because of friction material wear, accommodated by the low and high on the reservoir, or you've got a leak.

Never bought a car that's had the fluid topped up?

EdGasket

= Manaufacterers recommend that when you wind back the piston that you open the bleed valve and let the fluid drip off the nipple instead of popping open the master cylinder and pushing the fluid all the way up the system.

Can't say I've ever seen a Manufacturer recommend that; they usually say take it to an authorised dealer lol. Some petrol heads suggest it and it is not a bad idea as it releases some of the oldest brake fluid and you can top up with new however at the risk of shearing off your bleed nipples/stripping threads unnecessarily. If in doubt just push the piston back in, it's what most people do.

BeenThroughItAll

nobbysn*ts wrote: »

I guess they assume if you can manage to crack the nipple open, and you're winding the piston in, you're bright enough to know to put a piece of tubing on, and stick the other end into a container.
Ah well, I guess they have to spell that out as well now.

Erm, yeah. Well some of us are bright enough to know that, but then i would just leave the bleed nipples alone and monitor the volume of fluid in the master cylinder.

My post wasn't serious, BTW. I was trying to elicit some sense from the OP.