[ROVERNET - UK] more servo woes
peter at king-co.com
Mon Oct 23 01:05:25 BST 2006
I did test the piston before tightening the mounting plate, piston
returned fine. The valves seemed to be fine, but I don't know how to
gauge if they are operating correctly. I suppose I need to take the
servo apart again and see if anything is amiss.
On Oct 22, 2006, at 7:44 PM, S Manwell wrote:
> Did you test the big vacuum piston to see that it moves freely in
> the cylinder? You should be able to push the piston in against the
> big spring and the spring force should be enough to return the
> piston when you release the pressure on it.
> The assembly of the valves on the side of the aluminum casting must
> be right too -- when you release the brake pedal, the control
> piston in the smaller cylinder should return, causing the valve to
> close off atmospheric pressure and apply equal vacuum to both sides
> of the big piston allowing the big spring to return it.
> I can't think what the O-rings would be for...
> peter king wrote:
>> A frustrating day on the Rover farm today. I rebuilt the P5 servo
>> yesterday, and installed it today, but the brakes stuck on after
>> starting the car. I removed the servo and re-aligned the piston,
>> afraid that it was binding. After a second installation, the
>> brakes still stick.
>> The vacuum line valve is operating properly (one-way), no fluid
>> leaking past the seals into the vacuum chamber, so at least that
>> problem is fixed, but what other problem should I look for? There
>> were two small "O" rings in the rebuild kit which I could not
>> find any use for. Might I have left something out?
>> Any thoughts would be greatly appreciated.
>> rovernet mailing list
>> rovernet at lyris.ccdata.com
>> To unsubscribe, go to this web page, look near the bottom and
>> follow instructions:
>> Back-up list and photos at:
> rovernet mailing list
> rovernet at lyris.ccdata.com
> To unsubscribe, go to this web page, look near the bottom and
> follow instructions:
> Back-up list and photos at:
More information about the rovernet