MiTo brake piston problem...

[northernbstard 84]

Changing the discs and pads on the Mito, and with moving the caliper out of my way the piston has

moved outwards...

I've tried the usual route of compressing it back into the caliper but no joy

My lad reckons you have screw it back which I tried but the piston has come out even further

now (a good inch) tried both clockwise and anti ...

Can anyone advise .URGENT' I've got no brakes at the mo

[LJ_GQV 115]

Dont know if its right (i doubt it is but worth a guess ) but have you taken the lid off the brake fluid bottle? I think i had to do that when i changed some brakes on a car before so theres no pressure when you squeeze the pistons back in?

[northernbstard 84]

Yes tried that and also undoing the bleed nipple, feels like hydraulic lock

[LJ_GQV 115]

What did you use to squeeze it? I remember using a big G clamp from the shed

 

Other than that, i have no more ideas . Hope you get it sorted though

[northernbstard 84]

Yes used a big 'fuck off' engineering G clamp but never budged it

 

Lucky fucking Eddie strikes again

[LJ_GQV 115]

Is it going back in straight? If its slightly off then im guessing it wont go back in?

 

Does it move if you press the brake pedal really gently? (so it doesnt come out completly)

 

Could you clamp the brake hoses & take the caliper right off & take it apart & refit it all? Thats a bit long winded & might not work though,

 

I have no idea about this btw, im just guessing so dont blame me if it goes wrong

[northernbstard 84]

Looking like the only option at the moment, fucking German Bosch shite

 

Luckily only started on one rear but will need to work out how to push the piston in before

tackling the other 3 ..I'm not stripping all the fuckers down

[LJ_GQV 115]

If its the rear is the handbrake on?

[northernbstard 84]

If its the rear is the handbrake on?

 

No... I ain't that daft

[LJ_GQV 115]

 

 

 

You sure?

[northernbstard 84]

'kin piss take

 

A 'wind up' tool is needed apparently to change bloody brake pads these days

 

Fucking 'wound' me up for sure ...

My lads mate is going to borrow one from work tomorrow

 

I shall report back

[LJ_GQV 115]

glad you got it sorted

[Bigdar 62]

He hasn't yet

 

Glad you might be able to sort it NB

 

[LJ_GQV 115]

Good point glad you found what you need

[northernbstard 84]

Good starting point though lads

 

Given me a little light at the end of the tunnel

[LJ_GQV 115]

[northernbstard 84]

Christ tonight what a bloody mare that was

 

All done & dusted now

 

Had to use a rewinding tool to get the pistons on the rear to retract but the one that was giving

me the problem was a right twat and after a dozen attempts I packed everything away and resigned

myself to stripping it down tomorrow

 

A quick shufty on t'interweb about bosch calipers and Renault Master vans of all things?... I had

another crack at it and the bastard played ball

 

Dropped a bollock though Shot off down the street and realised I hadn't tightened up all the

wheel bolts properly

 

Proper expert now on MiTo brakes

[LJ_GQV 115]

i done that once with the wheel bolts. 'might' have driven a hundred miles or so though, motorway, lanes, dual carriageways then heard a knocking & id lost a bolt

 

Glad its done

[northernbstard 84]

Same here mate

 

Bit of a bastard though when you can't even change your own pads these days without the

need of specialist tools

 

Seen thicker crackers than the old front pads though

[Smaky 73]

What's the mystery? It's been the case for over 20 years that you need a wind back tool to reset the rear callipers on Alfas, why has this been such a mare?

[northernbstard 84]

What's the mystery? It's been the case for over 20 years that you need a wind back tool to reset the rear callipers on Alfas, why has this been such a mare?

 

Never had an Alfa only a van and a bike

[Smaky 73]

A little research in future will help guarg against misfortune, btw, every time you pulled the cable arm, that was causing the piston to become erect.

[northernbstard 84]

A little research in future will help guarg against misfortune, btw, every time you pulled the cable arm, that was causing the piston to become erect.

 

Feel a bit spongy tbh any tips

Handbrake is spot on though, can only lift it up an inch

[Smaky 73]

Firstly unwind the handbrake cable tension under the handle then you wind the brake calipers in and fit the pads, next you need to pump the pedal till it goes firm again and then set the handbrake tension so that when the handbrake is off the arm on the calliper is resting on the stop, one click should then lift both calipers off the stops, 4 - 5 clicks should be fully applied. If the pedal stil feels spongy then either there is a lot of air in the fluid or a lot of moisture/fluid degridation, either way a complete system bleed is recommended.