Best Way Of Bleeding Brake Fluid?

[roland rat 11]

im going to fit 307hdi brakes to the 205 this weekend and ive decided to change the brake fluid for new stuff as i dont know how old the current stuff is.is there any particular way yhat i should drain the fluid as i dont want to f*ck any thing up.also if i put dot 5.1 in instead of dot 4.1 would i need to be aware of any problems that this may cause?

[Sandy 191]

Get a basic pressure bleeder from halfords or wherever. Well worth the investment, it's a piece of cake!

 

DOT 5.1 doesn't have any disadvantages over 4, but DOT 5 doesn't absorb moisture and can lead to internal rusting. people often get them confused.

[sonofsam 5]

You can use gravity to drain the old fluid out.Open up all bleed nipples

with each having its own pipe going into a collector of some sort( jam jar usually)

[roland rat 11]

so it doesnt matter if theres no fluid in the system for a small amount of time?also do i need to use anything to flush the system clean or is it a case of just putting the new in and bleeding it properly?

[Simes 248 2 Cars]

so it doesnt matter if theres no fluid in the system for a small amount of time?also do i need to use anything to flush the system clean or is it a case of just putting the new in and bleeding it properly?

 

Draining it right out isn't a problem, however if the master cylinder runs dry it takes a while to get all the air out. When I piut my 307 brakes on and a new m/c we bled the system 3 times before I was happy all the air had gone.

 

Have you checked the state of the rear bleed nipples yet? I'd check these out prior to fitting the 307 brakes as a snapped bleed nipple could be imminent.

[roland rat 11]

Have you checked the state of the rear bleed nipples yet? I'd check these out prior to fitting the 307 brakes as a snapped bleed nipple could be imminent.

yes ive only just put new 306 rear calipers on the car so theres no probs there.

[Guest BrainFluid]

In my experiance one man bleed kits are a pain in the arse compare to doing it with two men, but that not what your talking about....

 

....If its just the bleeding of the fluid that your doing and then doing the last bleed the good old two man way theres no point in going out and spending a fiver on a one man bleed kit, the resovir they come with is pretty small and needs emptying at least once.

 

Your better off spending 50p on a piece of clear flexy pipe (one that fits snugly over the nipple) attacing it to the afore mentiond nipple and popping the other end in a bigger pot on the floor.

 

Just want to say nipple again...hmm, nipples.

[veloce200 3]

Easibleed all the way - in my opinion probably the best labour saving device for cars ever made! DOT 5.1 has higher wet and dry boiling point than normal DOT4 fluids. I'll never bleed brakes by pushing the pedal down after scrapping a master cylinder it's not worth the risk.

Edited August 17, 2006 by veloce200

[hengti 2]

Easibleed all the way - in my opinion probably the best labour saving device for cars ever made! DOT 5.1 has higher wet and dry boiling point than normal DOT4 fluids. I'll never bleed brakes by pushing the pedal down after scrapping a master cylinder it's not worth the risk.

 

 

I'd go Easibleed too - they might cost £20, but (used correctly) they're a doddle. Used to hate brake bleeding until i got one of these.

 

Castrol Super Dot4 fluids' been fine in mine. Widely available. Not the cheapest though.

 

To be as sure as you can be that you're getting all the old fluid out (rather than easibleeding more fluid through the system than you might actually need to), I'd syringe out the old fluid from the reservoir before starting (get as big a syringe as you can from a chemists). Obviously fill up with new fluid before starting.