Bleeding Brakes

border · Mar 18, 2020

Right gonna have a go at bleeding Brakes on my rebuild. Brand new brakes and pipes all round, never had fluid in yet. Got a good idea how to do it but DO I need the Vac pump connected to the Servo first as it is just blanked off at the moment ??

jamesmartin · Mar 18, 2020

border said:
Right gonna have a go at bleeding Brakes on my rebuild. Brand new brakes and pipes all round, never had fluid in yet. Got a good idea how to do it but DO I need the Vac pump connected to the Servo first as it is just blanked off at the moment ??

no ,fill res and open all bleed nipples give it a few pumps and se if res level lowers,if it does itmeans masters filling and brakes can be bled as normal if not you may have to undo pipes on the master and use your finger as a one way valve to get master full

border · Mar 18, 2020

jamesmartin said:
no ,fill res and open all bleed nipples give it a few pumps and se if res level lowers,if it does itmeans masters filling and brakes can be bled as normal if not you may have to undo pipes on the master and use your finger as a one way valve to get master full

So shall I open all nipple's at once, as was going to do one at a time.

zeaphod · Mar 18, 2020

I'd open them all, and close one at a time as fluid appears. A pressure bleeder will help a lot in my experience. You will also go through a lot of fluid - 1litre isn't going to be enough!

jamesmartin · Mar 18, 2020

border said:
So shall I open all nipple's at once, as was going to do one at a time.

its just to get started youd need to bleed each later as normal,it makes no difference which order you bleed brakes

border · Mar 18, 2020

jamesmartin said:
its just to get started youd need to bleed each later as normal,it makes no difference which order you bleed brakes

border · Mar 18, 2020

jamesmartin said:
its just to get started youd need to bleed each later as normal,it makes no difference which order you bleed brakes

Ok great thanks. Is it same as clutch that I have to close nipple with Pedal Down when all air is out ? Got a bit of wood to jam in place while I run round for each corner

jamesmartin · Mar 18, 2020

border said:
Ok great thanks. Is it same as clutch that I have to close nipple with Pedal Down when all air is out ? Got a bit of wood to jam in place while I run round for each corner

yes

border · Mar 18, 2020

jamesmartin said:
yes

Cheers Mate. Next job after this is I Need to connect Servo to Vac will take pics tonight and see which hose to use.

border · Mar 18, 2020

. Had a quick look tonight and its not going to be as easy as I thought, Unless Im missing something which I probably am

.
How the hell do you get a spanner on these, It looks like you can on pic, but tried and although you can Just get the open end in its Very awkward to turn, the Ratchet end wont fit in between the 2 big nuts. Is there a special spanner or easier way to get at these ??. Don't want to round them off like I usually do.

jamesmartin · Mar 18, 2020

border said:
. Had a quick look tonight and its not going to be as easy as I thought, Unless Im missing something which I probably am .
How the hell do you get a spanner on these, It looks like you can on pic, but tried and although you can Just get the open end in its Very awkward to turn, the Ratchet end wont fit in between the 2 big nuts. Is there a special spanner or easier way to get at these ??. Don't want to round them off like I usually do.

standard ring or combination spanner

border · Mar 18, 2020

jamesmartin said:
standard ring or combination spanner

Think it was 11mm Bet I aint got one knowing my luck

Flossie · Mar 18, 2020

Yep, 11mm

nobber · Mar 18, 2020

I gravity bleed mine, just open the nipple and wait until constant stream of fluid comes out. People say closest to master first, Im not convinced on a simple system its entirely necessary.

border · Mar 18, 2020

nobber said:
I gravity bleed mine, just open the nipple and wait until constant stream of fluid comes out. People say closest to master first, Im not convinced on a simple system its entirely necessary.

Ive heard that too about closest to Master too, Then others say passenger front first then driver under master second, passenger back third then drivers back last,

nobber · Mar 18, 2020

border said:
Ive heard that too about closest to Master too, Then others say passenger front first then driver under master second, passenger back third then drivers back last,

It depends on the pipe layout, my guess is shortest run first.

border · Mar 18, 2020

nobber said:
It depends on the pipe layout, my guess is shortest run first.

When I find a decent spanner that fits will have a go.

mick 1986 · Mar 18, 2020

nobber said:
It depends on the pipe layout, my guess is shortest run first.

I was always taught to bleed shortest to longest. If you look at the Trailer Fitters Toolbox video on YouTube, it shows the order as longest to shortest. I don’t think it makes much difference.

nobber · Mar 18, 2020

border said:
When I find a decent spanner that fits will have a go.

I keep some spare bleed nipples in my tool box, that way when the mole grips muller the nipple I can throw a new one in there.

jamesmartin · Mar 18, 2020

mick 1986 said:
I was always taught to bleed shortest to longest. If you look at the Trailer Fitters Toolbox video on YouTube, it shows the order as longest to shortest. I don’t think it makes much difference.

makes no difference ,but its wise to do one of each on a dual circuit system first

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