No space for disc washer!

[l33th3tr33]

I changed the discs and pads a while back and ordered a disc washer as one was missing, but when it came to fitting it I couldn't pull the caliper close enough to get the bolts back in. Without the washer the bolts only just go in.
I've wound the piston in, double checked everything and I'm stumped. Has anyone had this before?

172 cup and the components are -

Brembo HC discs.
Brembo OEM pads.

 

[MartinR]

Pull the caliper its on sliders.

 

[l33th3tr33]

I've done that, it still doesn't reach. It's as if the pads are double the thickness they should be.

 

[Bluebeard]

I thought this was a kitchen ergonomics thread.

 

[Mr R.]

I thought this was a kitchen ergonomics thread.

That makes 2 of us.

 

[Adamm.]

Get a washer dryer, then put the dish washer where the tumble dryer was and plumb in.

... Oh.

 

[sbridgey]

Back OT, you are putting the washer on the rear discs aren't you?

 

[lemonnobby]

pics might be good. possible round the wrong way?

 

[Dan@SJM]

pics might be good. possible round the wrong way?

I just literally thought that and seen you'd said it!

 

[l33th3tr33]

The washer is/was on the correct way round, and on the back. I'm very busy for the next few days so won't be able to get pics but imagine putting two washers on, the caliper wouldn't slide out far enough to get the bolts in, and that's what's happening but with just the one washer if that makes any sense.

 

[lemonnobby]

I've seen someone do it with the washer on wrong.
have you took the slider bolts out or the 2 17mms

 

[philfree]

Have you aligned the piston groove to engage the protusion at the back of the pad?

 

[l33th3tr33]

I've taken the two 17mm bolts out, these ones -

Also, I have got the piston groove lined up with the little tab, nipple or whatever on the back of the pad.

 

[Fred@BTM]

and you've wound the piston all the way back in??

 

[l33th3tr33]

Yes, wound in as far as it will go.

 

[philfree]

Sorry for asking but handbrake was released when you wound the piston in or try to put the pad holder back on of course

 

[MG cup]

Your caliper is seized on the slides or partially seized, you do know it slides on the two opposing bolts from the ones you have circled.

 

[l33th3tr33]

I did have the handbrake off, and the caliper moved smoothly on the sliders, I took the carrier off to check and it moves a fair bit, it just needs an extra 10mm!

 

[Dan@SJM]

Sounds like the piston hasn't wound all the way back mate

 

[l33th3tr33]

I wound it in until it literally wouldn't budge, it's starting to annoy me now and the weather is so s**t I can't even walk to the car without getting f**king soaked let alone do anything to it.

I still need to change the fluid in the brakes so I'll try winding it further back while doing it.

 

[Fred@BTM]

its a 10min job, something is to **** somewhere, we need pics!

 

[l33th3tr33]

I'll try and get pics as soon as I can, What's the starred out word Fred? can't see it on tapa for some reason.

 

[George@RTR_Parts]

^ I presume he means something is to "c o c k " mate

Try get a pic up asap (i appreciate its dark and not right nice outside!)

 

[VikkiB]

If it helps just whatsapp the pic to dan, get a pic of the caliper from the rear of the car.

 

[McGherkin]

I'll try and get pics as soon as I can, What's the starred out word Fred? can't see it on tapa for some reason.

Something has gone to 5hit.

 

[l33th3tr33]

Right well there's no chance of getting the wheel off as there's no space outside to jack it up and the cars on a sloped drive, but these are the best I could get I'm afraid.

 

[lemonnobby]

Can't really see alot there

 

[l33th3tr33]

Yeah I understand, nothing I can do tonight though, I'll see what I can do tomorrow.

 

[C2kev]

Looks like piston not wound back on last pic

 

[Mr Plums]

Looks like piston not wound back on last pic

About 8mm left there.

 

[l33th3tr33]

I have been using the car for a few weeks since winding it in, if that would make any difference? Don't know if it would push back out?

 

[Dan@SJM]

Yeh it would. If it helps mate I'm open on Saturday morning

 

[l33th3tr33]

Yeh it would. If it helps mate I'm open on Saturday morning

I've got a family friend to fit me in at his place tomorrow morning, but thanks for the offer Dan.

 

[Michaelfoz]

out of curiosity,
what thickness are the new pads? and the new disc?

 

[l33th3tr33]

Couldn't tell you tbh, they were from G172 so I doubt it's a problem with the disc/pads but I'll be tackling this the second the weather clears up.

 

[Michaelfoz]

hmmm its definitely a strange one.
im guessing you got the washer from him as well?

are you also getting full movement on the sliders??

 

[l33th3tr33]

Yeah got the washer from G as well. I suspect it's the sliders but I'll get a pic of how far in I can get the piston when it won't wind in any more, and how far the caliper slides both ways.

 

[Michaelfoz]

don't know if someone has mentioned it but make sure the reservoir cap is off as well.
iirc leaving the cap on can cause a build up of pressure in the system that stops the piston going fully home

 

[l33th3tr33]

I don't think I did that but I'll give that a go, cheers for the tip.