SvBeek

Thanks Simon I'm thinking about putting them back in, just to be sure. Its only a minor job anyway. It came to my mind they were fitted to the original valve as well when I stripped the car a while ago. So they must have some purpose. Ill check the bore next time Im near the garage.

I have two questins about the PDWA valve in a 110. Looking at the parts manual I see it is installed with the switch facing downwards. Mine is upwards. Could that somehow be a problem for the functioning of the device, or with brake bleeding? Also, mine came out of the box with two brass 'adapters' attached to it, just like in this pic: http://www.brit-car.co.uk/shopimages/products/normal/NRC7871.jpg I've removed them because I assumed they were adapters for a different thread, but when they were lying on the bench I noticed the thread is the same. But dont see anyting special about them, can just peek straight trough. Do they have any function and should i put them back in?

If you can get a plate and mot on them those >25 year old land 90/110 would have some value for export. E.g. here in the netherlands prices for those vehicles are way higher then in the UK, mainly because you dont pay road tax for them (which is quite a lot for a diesel 110)