[ROVERNET - UK] Federal 3500S brakes sticking

peter king peter at king-co.com
Thu Feb 2 23:32:36 GMT 2006


I recently rebuilt my master cylinder and had the same problem. The  
culprit turned out to be the rebuild kit I had purchased from the UK,  
which had come with the incorrect replacement "plunger" (for lack of  
memory of the proper name).  This is the small rubber replacement  
that goes on the little shaft located at the end of the cylinder. It  
is the last part out and first to go back in. It turns out that there  
are different rubber parts for this replacement, one for the Jag  
application, one for Rover. If the replacement plunger took any  
effort to re-insert in Mr Fox's master, it was probably the wrong  
part. It will stick and prevent the fluid from backing out of the  
lines, then slowly release, freeing the wheels until the pedal is  
depressed again.


On Jan 31, 2006, at 9:22 AM, Glen Wilson wrote:

> I've tried to get a new acquaintance, Mr. Fox, subscribed to the list,
> but I don't see any postings from him. Please respond to this question
> and I'll pass the info on to him.
> Mr. Fox has a Federal 3500S in Nashville, TN which he has owned since
> 1975. He contacted me with a question about his brakes. He recently
> rebuilt the servo assembly and master cylinder. During the course of
> this work, he had the air check valve apart and wasn't certain how  
> some
> of its internal pieces should be oriented when it was reassembled. He
> has been able to successfully bleed all of the calipers in the system,
> but the brakes are not working correctly. He has a very hard pedal  
> feel,
> thinks he may not be getting any boost from the servo, and when the
> pedal is released the system is slow to free the wheels up. For a  
> second
> or two after releasing the pedal, the brakes stay on.
> Any ideas?
> Mr. Fox sounds like he is a capable mechanic who generally knows  
> what he
> is doing. He has the official Rover service manual in the binder  
> which I
> am guessing is an actual workshop edition from a dealership. He  
> also has
> the white hardcover owner's manual. I don't think he has the separate
> supplement for the Federal carbs, emissions, etc. but that info may be
> in the binder he has. Actually, he may not have federal carbs on  
> the car
> because he told me the car had a Rochester carb fitted when he bought
> the car, and he had some SU carbs shipped over from a source in  
> England
> and fitted to the car.
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