Hydraulic Reservoir Cap leaking

[Doug_RS2]

I noticed my hydraulic fluid reservoir cap was leaking last night - it was when I was turning the wheels with the engine off and it was seeping out the small hole in the top of the cap.

Is it supposed to do this - maybe because it is overfilled?

[Jeffer]

Mine does this aswell. i have no idea if it's supposed to

[jameswkr]

Doug, do you mean hydraulic or mineral ? The hydraulic level would be unaffected by the steering ( its brakes and clutch only). Mineral oil level rises if you de pressurise the bomb by applying brakes without the engine running.

[Doug_RS2]

I mean the hydraulic oil - the green stuff for the brakes and power steering - the reservoir sits in front of the washew bottle. Not the brake fluid for the brakes and clutch.

I was pumping the brake pedal(with engine off) as I was cleaning each of my brake pistons. If the hydraulic level rises because of this hopefully I have nothing to worry about. I'll keep an eye on the level when I start it though.

[Stick Insect]

I noticed my hydraulic fluid reservoir cap was leaking last night - it was when I was turning the wheels with the engine off and it was seeping out the small hole in the top of the cap.

Is it supposed to do this - maybe because it is overfilled?

Doug, I have noticed on every power steering car I have had that the area around the power steering fluid resovoir is always oily. My coupe had 7K on the clock when I got it and it was oily then. Just seems to be a fact of life.

David

[jameswkr]

Doug, sounds like you have nothing to worry about. There is a caution in the procedure about the level rising if you de pressurise the bomb ( which is what you are doing when you pump the pedal with the engine off). Autocheck will also warn you if the level drops too low ( its the sensor on the cap ).

[Jeffer]

Mybe it's because the level sender is fabricated in the cap, so the oil will spill through the holes. just a brain fart!!

greets

[Fat Audi 80]

I mean the hydraulic oil - the green stuff for the brakes and power steering - the reservoir sits in front of the washew bottle. Not the brake fluid for the brakes and clutch.

I was pumping the brake pedal(with engine off) as I was cleaning each of my brake pistons. If the hydraulic level rises because of this hopefully I have nothing to worry about. I'll keep an eye on the level when I start it though.

That would sound about right, mine did exactly the same thing the other day when I was testing my Bomb and discovered more fluid at the base of the reservoir having only cleaned that area up a few days earlier ! :

Cheers,

Steve

[newsh]

Level rises when you pump the pedal with the engine off, if its slightly overfilled its enough to send oil out the top.
The old urs are terrible for this, you're actually supposed to pump the pedal till it goes hard before checking the level, if you dont you can end up with a pint or so of oil all over everything. People are always overfilling them, I mean if you take the top off the reservoir and the fluid is 6 inches down its the natural thing to do..

[Crawford_S2]

Doesn't it depend where your steering is too, i find the level different on one lock to the other!

[porkkis]

Turning steering lock to lock emptens the steering rack and therefore adds fluid in the container. Overfilling.