Volvo 480 Club Europe

Went to undo the 5mm allen head thing and what apeared to be oil started to pour out so tightened it again. Any ideas? Might just be water I suppose?????

Cheers

John

Unfortunatly it's likely to be brake fluid.

Not a particularly good sign.

I'd say it's a good idea to invesigate further.

Richard

Seals in the Caliper is knackered.
It was brake fluid coming out.
Seems to be a relatively common problem, I've seen it a few times.
Looks like you'll be having to replace the caliper, unless you can get it reconditioned, but that would leave you without a car.

....hmmm not good! Brakes are working fine though with no visible leaks. Could it just be a leak around the adjuster itself?

I am trying to undo the right allen head bolt aren't I? I notice that there is a 7mm bolt in a rubber sleeve, under a rubber bung aswell. Whats that one for?

Now where was that thread again on fitting 240 four-pots????

Cheers

John

Thats the right one you are doing.
The ones in the rubber sleeve are for removing the caliper from the car.

The brakes will work as they are, but if the seal around there has gone, its likely the others won't last much longer, if it was me i woud change it right away, don't take chances where the brakes are concerned.

Hi!

If there is a leak by the adjuster thats no problem, it is the sealing round the adjuster thats broken (o-ring in swedish) If the allen head sealing holds thight it´s no problem!

/Jonas

i'd say so, but you'll also have to to flood the earea betwen adjuster and alen head sealing so there's no air in it.

o-ring in swedish

let me translate it for you:

o-rIng

Hi!

I´d say you dont. Probably the sealing isn´t totally wasted so fluid will slowly run to the adjustment space. But i dont think it will impact on the brake handling.

/Jonas

This is a part of the brakes, don't take the chance that it may be ok. Change it, because if it does fail you may end up hurting yourself or someone else.

I also agree with whoever said the air in the adjuster part may get into the braking system. If you can squeze fluid in, then the air can also go the other way, it's got no where else to go (unless something else is leaking as well).

Richard

Hi!

Well well, you have a point there!

But the price of the calipper and the gain is not worth it, air will not return to inside the calipper, air will stay att the highest level.

It is possible to change the oring, see www.480center.com /topics / chassie /renovera bromsar (page down at moment)

/Jonas

Former car mechanic

oh and John,I posted about the 240 4-pots a few months back.DBS from memory informed me that due to measurements/fabricating involved it was far from viable mate!

I was pissed off too!!!!!!

and yeah the calipers?Change it big boy!!!!!!!!

this is probably going to sound stupid but ages ago i read about a guy with a mk2 granada who wasnt impressed with his brakes (obviously, it being an old Ford!)
he rigged up a PAS pump as some sort of mega brake booster (instead of the servo) apparently the effects were amazing and still retained all the brakes feel.

anyone know about this sorta stuff and want to comment whether this would be viable??

Hi

Here the right link http://www.480center.com/servlet/user?a ... cle&id=317

Sorry, it´s in swedish.

Murf, your right, foor an example AUDI used the powersteering as booster for the brakes. (you get even pressure, and higer) so you inly need the valve to install it.

Catgroom, i agree, real racecars have solid brakecalippers, they dont bend when brakeing as the standard flooting one does (but these are simplier and cheeper)

/Jonas

i'm sure if the 7mm allun key caps have bronze wahsers on them then it is designed to keep fluid in behind just like the oil sump washer etc.
cheers felyx

I think its more likely to be to keep water and shit out.... One car we found had plastic bolts instead, probably because the allen bolts seize in.

Chris, if you remember my car had yellow plastic screw in caps that looked factory fitted. I assumed they changed the design as the caps own seize in. I had brake fluid leak from the adjuster on one of my rear calipers, annoying as i'd only just painted them, found a spare caliper, quick swap and bleed...job done and peace of mind.

still does on one side.

Conclusion, it isn't designed to be a fluid seal!

heh my turbo just failed her MOt on one thing.

-----fluid leaking from adjuster.------

Have now replaced the caliper so will ge a fresh MOT tomorrow

Then need to wait until Monday to get tax