Brake pad change - should one open the fluid reservoir cap?

[mr nozzle]

I'm planning to change the rear pads on my S60R, should I open the reservoir cap to release pressure when pushing the cylinders back? I've done a search and there are conflicting answers. Some say there is valve that lets pressure out without having to remove the cap. What say you? Ta in advance

[T5frankie]

i always do with no issues

[claymore]

It makes more sense to take the cap off, it's not going to do any harm.

[stribo]

That's how I do it, however, I have read previously that you're supposed to crack the bleed nipple off, and allow any fluid to run out of that.

[merc85]

Ive always been told its advisable to leave the cap off, haven't ever had a issue either way

[mr nozzle]

Off with cap it is then, thank you.
I've just opened the new box of pads and am slightly confused because there are metal clips on some of the new pads, on the side. All shall become obvious once I take the old ones out, right?

[Jimmie]

The clips on the pads will go into the piston.

[JUDGENINJA]

Yep cap off.

Yes there is a pressure release, which is part of the cap anyway. I believe that is for emergency use.

Also always give the car a good bleed through if you don't know how old the fluid is. If you do then it makes sense for the cap to be off so that you can refill regularly..

[Harvey]

That's how I do it, however, I have read previously that you're supposed to crack the bleed nipple off, and allow any fluid to run out of that.

It's a good idea to do this as the brake dust can make its way past the seals over time also the fluid will also have got hot,give them a bleed to flush out the dirty fluid.

[Harvey]

The clips on the pads will go into the piston.

On the "R" calipers there are no clips on the pads,just knock the two pins out and push the pad back into the callipers so the pistons move in one at a time inner pad then outer pad as the calliper Doesn't float on the "R"

Do they look like these ones ?.

http://www.ipdusa.com/products/9134/120461-rear-brake-pad-set-s60r-v70r

[mr nozzle]

Thanks, the clips are like these. 24785
I had all the fluids changed recently so all good there.

[Jimmie]

On the "R" calipers there are no clips on the pads,just knock the two pins out and push the pad back into the callipers so the pistons move in one at a time inner pad then outer pad as the calliper Doesn't float on the "R"

Do they look like these ones ?.

http://www.ipdusa.com/products/9134/120461-rear-brake-pad-set-s60r-v70r

I never notice that It was an R.lol
Must be the wrong pads if thev have spring clips on them.

[Harvey]

I think you might have the wrong pads mate.

Hope the shop is still open Best get your skates on to change them !.

[mr nozzle]

Doh! It does say on the sellers website that they're for the R, also mentions on other sites that they'll fit. I trust you guys more than them so they'll go back. Thanks again.

[Harvey]

Doh! It does say on the sellers website that they're for the R, also mentions on other sites that they'll fit. I trust you guys more than them so they'll go back. Thanks again.

They probably probably mean up to 2003 years V70R ,not the 2003 to 2007 years, take it we're talking about the one in your garage a 2006 at S60R ?.

[mitchyboy01]

They probably probably mean up to 2003 years V70R ,not the 2003 to 2007 years, take it we're talking about the one in your garage a 2006 at S60R ?.

I had trouble pushing the pistons back in the missus Clio even with the cap off. Cracked open the bleed nipple and it went straight back. Made myself a little bleed kit using a clear bottle and hose and bled the whole system whilst I was there with fresh fluid. Felt much better after with new fluid.

[mr nozzle]

Yep, 2006 S60R here's the advert from the seller http://www.ebay.co.uk/itm/301148811981

[Harvey]

Yep, 2006 S60R here's the advert from the seller http://www.ebay.co.uk/itm/301148811981

Just had a look they do have it wrong.
Did click on there part finder link and put in a S60R reg and it did show the correct pads for me.

http://195.59.3.154/mintexonline/WebForms/frmMainMenu.aspx

[LeeT5]

I'm planning to change the rear pads on my S60R, should I open the reservoir cap to release pressure when pushing the cylinders back? I've done a search and there are conflicting answers. Some say there is valve that lets pressure out without having to remove the cap. What say you? Ta in advance

Your not meant to undo the reservoir cap at all. Mostly because as the fluid rises there's a risk it will spill out and then destroy the paint on the vacuum chamber.
Your meant to undo the caliper nipples as forcing the fluid in reverse may damage the master cylinder seals.

[mr nozzle]

Is there a chance though, that you could let air into the system by doing that?

[t5 pete]

Ive always done it by slackening off the nipple worst case and the nipple is seized and you cannot budge it then yeah undew the cap but where possible do it through the nipple so there isn't any possible chance of back pressure.

[merc85]

Thanks, the clips are like these. 24785
I had all the fluids changed recently so all good there.

Hi, Harvey is correct they are brembo caliper's and the pads are retained with pin's, They are not Ate style like you have pictured.

http://www.brakebook.com/bb/mintex/en_DE/PKW/120/4696_Series/17133/applicationSearch.xhtml

You will need Mintex MDB2221 ;)

[LeeT5]

They probably probably mean up to 2003 years V70R ,not the 2003 to 2007 years, take it we're talking about the one in your garage a 2006 at S60R ?.

You mean the P1R >2000. P2R was from >2003-2007.

the pads they have sold you are for a P1R, not a P2R.

[LeeT5]

Is there a chance though, that you could let air into the system by doing that?

Yes, but if your changing the pads, then I would suggest it's worth bleeding the fluid anyway.
They should be pressure bled, not the traditional method of pumping the brake pedal. You can also damage the seals by doing it that way.