rs2 powersteering pressure switch

[curlylee]

hi all just in the middle of rebuiling my rs2battery was a bit flat so startered her up today to let the fans kick in at temp,went to make a coffee to come back to a pool of power steering fluid,turned her off popped the bonnet and it had sprayed all down the back of the engine,took a while to find out where it was coming from ,it was from the pressure switch under the brake master cylinder,took it off to find the washer had corroded through as it was alloy ,so replaced with a copper one,just a heads up really

[kulster]

Is it easy to see from above.? Or is a ramp needed to check ?

[UrS4boy]

Is it easy to see from above.? Or is a ramp needed to check ?

PN 443919081. Bottom of the brake servo (not the master cylinder). Item 3 here (washer is item 2):

http://audi.7zap.com/en/rdw/audi+80+.../612-612020/#3



You can just see it here (the 2 pin switch on the right):

[curlylee]

yes thats the one,we call them master cylinder for some reason,you cant see it very well, until you remove the heat shield,mine just gave up as it had just rotted away, glad it was in the garage when it let go or the pump would have run dry,for the sake of 20 mins i would change the washer

[UrS4boy]

yes thats the one,we call them master cylinder for some reason,you cant see it very well, until you remove the heat shield

You can call it anything you want but it is not the master cylinder, that is the next piece in the puzzle. It is the brake servo or brake booster, as shown here:

http://forums.quattroworld.com/s4s6/msgs/25095.phtml

[curlylee]

I said its under the brake master cylinder not on it.anyway its just a heads up for anybody

[UrS4boy]

I said its under the brake master cylinder not on it.anyway its just a heads up for anybody

It is clearly on the bottom of the brake booster/servo, not the master cylinder

Sorry (being precise is important to an engineer such as myself (even in retirement))

4A0611021C Master Cylinder (no pressure switch since there is very little pressure involved)



441612101B Brake booster showing the 443919081 high pressure switch

[kulster]

Thank you. I'll have a check on this the next time I take the cover off my car

[DEREKCO]

Brake booster/m/up.

Now now boys let's not fight over words remember WARS have been fought over such things

[curlylee]

It is clearly on the bottom of the brake booster/servo, not the master cylinder

Sorry (being precise is important to an engineer such as myself (even in retirement))

4A0611021C Master Cylinder (no pressure switch since there is very little pressure involved)



441612101B Brake booster showing the 443919081 high pressure switch

if its no use to you go and bother some other thread ,you try and help out other forum members and all you get is shot down,i will keep thing to myself in future

[UrS4boy]

if its no use to you go and bother some other thread ,you try and help out other forum members and all you get is shot down,i will keep thing to myself in future

You boys are too sensitive. All I was doing was correcting an error and adding more info to help the same people that you were trying to help.

If you wanted to help more, you might have specified the size of the new non-alloy washer that you used. The OE washer, PN N 0138085, is listed as A10 x 16.

Apologies if I hurt your feelings.

[Dynasty]

What is the thread size on this pressure switch (PN: 443919081)? M10x1?

[curlylee]

if its for a washer i used a copper washer out off a braided brake line kit fits perfect

[Dynasty]

if its for a washer i used a copper washer out off a braided brake line kit fits perfect

I need to know the thread size on the pressure switch (i want to attach a pressure gauge to the servo system).

Edit: The thread size on the pressure switch is M10x1.