Re: brake trouble

["Chris DeLong" <green536@hotmail.com>]

<x-flowed>Well your problem could be one of three things.
#1. Your master cylinder has gonee bad from sitting in an unhappy 
environment
#2. Did you bench bleed the master before you installed it? You could have 
massive amounts of air in there still!
#3. and most likely, you have too much of a preload on the replacement 
master and its not returning all the way. What year and model is the car in 
question? Does it have an adjustable link rod from the pedal to the booster? 
If this rod is preloading the master too much then you are not allowing it 
to return all the way to aquire more fluid into the now cavitating master. 
Try unbolting the master from the booster and slowly push it into its home 
place on the booster and if you feel a point in which it is contacting and 
gaining resistance then if its not all the way into the booster then that is 
your problem and you need to adjust the clearance and free play in the brake 
pedal. if you play with this long enough you'll know what i mean. make the 
freeplay about an 8th of an inch. GL


>From: POTATO! <theforce@invasion.com>
>To: scirocco-l@scirocco.org
>Subject: brake trouble
>Date: Fri, 5 Nov 1999 20:13:40 -0500 (EST)
>
>
>i'm trying to help my friend bleed the brakes on a car he recently bought,
>but we are getting nowhere near a firm pedal....
>
>the car had dodgy brreaks when he bought it.....he swapped rear discs and
>10.1's on it and a 16v scirocco booster + master cylinder....all the
>calipers appear to work find (clamp down on the rotor when the pedal is
>depressed and are difficult to turn after doing so)......the front brakes
>and master cylinder/booster came off a running car with no brake
>trouble.....all lines appear to be tight (no visual leaking of
>fluid)....no air is bleeding from the lines (bled them atleast 6 times
>now)....but once all lines are bled, the pedal will still push to the
>floor when the car is off
>
>anyone ran into something similiar....any ideas as to where to check or
>what to replace?.....how does a caliper act once it's gone bad? (all the
>outer seals on all 4 calipers were intact and in good condition)...
>
>this car had a rear axle beam proportioning valve similiar to the A2's
>that had rear discs (we replaced it with a brake union and he does have
>the stock 16v scirocco proportioning valves installed in the master
>cylinder and one other line comign off the master cylinder
>
>any help or insight would be appreciated
>thanks
>
>dave
>
>
>
>
>--
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Chris DeLong
ICQ#45030867
'80 16V Rag
'65 Bus (ugly, but good for campin' W/toaster oven)
'82 GLI
'80 'Vert
'61 17 Window
'78 Scirocco


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