Disk brake problems....HELP!!!

Post by **jaekl** » Fri Jul 11, 2008 9:50 pm

But only 2 holes and how much fluid actually has to be displaced? It really should work both ways with very little difference.

Post by **53buick** » Fri Jul 11, 2008 10:46 pm

WE FIXED IT!!!!!!!!!!

You will never believe what the problem was but...
We removed the servo and the brakes would not lock up like before so we knew it was the servo so seeing I have 2 the same we stripped the NEW one down.

Bearing in mind this NEW servo was bought on Ebay as a new unit 5 years ago and stored for a rainy day.....
We took the complete unit apart and found the main vacuum cylinder would go in and stay in....there is the problem then i hear you say...
We undid the 7 screws holding the plastic air filter assembly on and "hiss" and the main piston returns to its steady state...
We took the air filter apart and a small spring meant to hold the valve in place, lept across the garage.

On stripping down the other servo we found it full of crap and dust and rust etc but the small spring was held in place by a press clip and a rubber washer which keep the air pressure in equilibrium.
So, we robbed the older knackered servo of its washer and fitted it into the new servo and VOILA!!!! a working servo.
All fitted and functional now.
So I will bleed the brakes properly tomorrow and do a proper test run but thank you all for yor help...

Post by **Mogwai** » Fri Jul 11, 2008 10:53 pm

is the servo new or used? I had a problem with the reaction piston sticking in my servo it made it slow to release the brakes after pressing the pedal
EDIT looks like you fixed it in the time it took me to type this

Post by **MoggyTech** » Fri Jul 11, 2008 11:40 pm

Well done, tricky fault when 'new' parts turn out to be busted.

Post by **bmcecosse** » Sat Jul 12, 2008 8:44 am

Matt - I said 'discs and servo' - if not using discs, a servo isn't needed!