31 replies to this topic

[minidan]

whats the procedure for bleeding Metro 4pot calipers with the 2 bleed screws on each caliper?

[Jordie]

Ooooh id like to know this too. I was going to use 2 lengths of pipe and open them both, bleed them together......

[Road Runner]

Mine has 3 but if it's onlt 2 the I would think it's the bottom first then the top only because air rises, but I'll look in the Haynes.

[Jordie]

ive got one at the top on either side!

[minidan]

oops just realised there are 3! anyone how to do it?

[Surfbluegarage]

rite were havin a discussion about this and we've just done it to our mini but kind of forgot we think we did it inner middle then the top then the outer one as the fluid comes into the caliper from the middle one first, then up to the top through to the next section then pushes the last bit of air out of the far side of the caliper. hope this helps

[Jordie]

that sounds a logical way

[minidan]

rite were havin a discussion about this and we've just done it to our mini but kind of forgot we think we did it inner middle then the top then the outer one as the fluid comes into the caliper from the middle one first, then up to the top through to the next section then pushes the last bit of air out of the far side of the caliper. hope this helps

im sure it does make sense to many people , just not me atm... lol

what do u mean by 'inner middle' .

as you look at it i have: (lets say we are looking at the drivers side caliper) : a bleed screw on the left middle, and then a top and bottom screw on the right

[Jordie]

Picture would help dan, then we can label it up for you.

[Road Runner]

I have the Haynes Metro manual , I'm sure there is apicture in there and instructions I'll scan it up tomorrow.

[Surfbluegarage]

rite well are u sure uve got metro 4 ots then because my 4 pots were taken from a metro and i took um off so i know they r from that car. on the drivers side caliper u shud have a nipple on the outer face in the middle then 2 on the inner face one in the middle again and one at the top. have a look at this piccy..

[minidan]

rite well are u sure uve got metro 4 ots then because my 4 pots were taken from a metro and i took um off so i know they r from that car. on the drivers side caliper u shud have a nipple on the outer face in the middle then 2 on the inner face one in the middle again and one at the top. have a look at this piccy..

yea so thats 3 nipples on each. i'll check that but im sure thats what we have.

[minidan]

yea i just looked at the calipers and its the same as you said daps. Can you confirm that inner middle, top then outer is the correct order? thanks

also one more nooby question, do you bleed each one , one at a time so keeping the other 2 locked shut . (i assume it wouldnt work if they were all open at once.) just checking.

[danoz24]

just done my 4 pot calipers and simply went to local mechanics and he told me you need to bleed each nipple in turn but start with the one furthest away from the reservoir where you fill up with brake fluid. so start with rear passenger side, then rear driver side, then front passenger side nipple at the lowest of the 4pot, then the next one up and then the highest on the caliper (if three) then the drivers side bottom, middle, top.

this is passenger side on the left if driving the car by the way)

dan

[Surfbluegarage]

yea i just looked at the calipers and its the same as you said daps. Can you confirm that inner middle, top then outer is the correct order? thanks

also one more nooby question, do you bleed each one , one at a time so keeping the other 2 locked shut . (i assume it wouldnt work if they were all open at once.) just checking.

yeah do the order the person below u sed start from the furthest part of the car bleedin through depending on what brakin system u have tho. is its split diaganols then yes that sequence is correst if not check ya haynes manual.when u bleed the nipples in turn yes u only do one at a time. pump the brakes slowly and all the way down then wen theres no more air bubbles (will take afew times round the car if new parts are fitted) tell the person to hold the pedal to the floor and tighten the nipple. next nipple..