| [ Total Views: 1119 | Total Replies: 21 | Thread Id: 84297 ] |
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 komuter
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| posted on June 15th, 2010 at 03:01 PM |
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brake Question kombi
hi ,could anyone tell me whats going on with my brakes please,,i put the brakes on and the pedal doesn't come back the way it used to,it comes back
very slowly and holds the brakes on, ,i put a new vacum hose on the booster but it has not helped,,your thoughts would be appreciated,,,,
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1303Steve
A.k.a.: Steve Carter
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| posted on June 15th, 2010 at 03:16 PM |
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Hi
There is a return spring the pedal that often breaks.
Steve
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komuter
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| posted on June 15th, 2010 at 03:30 PM |
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thanks steve,is the return spring a large round one that is around the pedal arm under the front? and how would you know its broken can you see where
it is broken or do you need to dismantle to check it ,thanks in advance
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1303Steve
A.k.a.: Steve Carter
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| posted on June 15th, 2010 at 03:42 PM |
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Hi
If its broken it just rattles around on the shaft, I haven't worked on these for about 25 years so my memory is getting dim, I only work on my sons
bug or my bug now.
You could always tell when they were broken, the car seemed to be really sensitive to pedal pressure, it almost fell to the floor, and wouldn't
release like you said.
If you cant get one, a decent tension spring could probably be mounted in another location.
Steve
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komuter
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| posted on June 15th, 2010 at 04:43 PM |
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hi steve ,,i just disconeted the brake pedal from the booster via the split pin in the linkage and found the pedal worked fine so i am thinking its in
the booster somewhere maybe? your or others thoughts much appreciated .
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ian.mezz
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| posted on June 15th, 2010 at 04:52 PM |
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when it comes to your brakes, I would get a brake person to check em out.
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 vw54
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| posted on June 15th, 2010 at 06:16 PM |
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may also be yr brake hoses and or on a Kombi the proportioning valve
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komuter
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| posted on June 15th, 2010 at 07:11 PM |
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| Quote: | Originally
posted by vw54
may also be yr brake hoses and or on a Kombi the proportioning valve
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hi ,,is the proportioning valve attached to the chassie away from the brake booster on a kombi, if it is i seen a small leak out of it ,would or could
this be the problem?
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vw54
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| posted on June 15th, 2010 at 07:21 PM |
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yep it is away
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komuter
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| posted on June 15th, 2010 at 07:40 PM |
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thanks guys,, my next adventure is to replace the propertional valve,,,chow for now
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grumble
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| posted on June 15th, 2010 at 08:41 PM |
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| Quote: | Originally
posted by ian.mezz
when it comes to your brakes, I would get a brake person to check em out.
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This is very good advice,you are playing with peoples lives and not just your own.
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jamsha71
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| posted on October 28th, 2013 at 09:08 PM |
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Well here's a thread from way back that didn't seem to get closure. I'm bumping it because I have exactly the same problem.
Like komuter's problem, this is causing a big delay in the release of my brakes. I actually find myself reaching down and pulling the brake pedal up
with my hand to get moving!
I've worked out that if I pull the vacuum house from the back of the booster, the brake pedal returns as normal. If I put my finger over the hole in
the booster that the vacuum hose goes into, the brake pedal return is VERY slow.
I've changed out the master cylinder because my initial thought was that internal leakage past the cups was the problem. The booster is also
relatively new having replaced my old one which had seized up.
Any ideas?
76 Kombi (current)
75 Kombi
71 Beetle
69 Beetle
69 Beetle
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AA003
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| posted on October 29th, 2013 at 08:00 AM |
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Check the vaccuum hose. You must use the correct type of hose. Do not use fuel hose, pressure hose or garden hose.
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!
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 matberry
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| posted on October 29th, 2013 at 08:12 AM |
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maybe the booster breather hose which is the fwd hose that goes to the chassis rail
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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jamsha71
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| posted on October 29th, 2013 at 08:18 PM |
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Hey guys, thanks for your thoughts.
I've eliminated the hoses as potential causes.
The breather hose (front of booster) is free from obstruction and I have the problem whether it's connected or not.
There is plenty of suck on the vacuum hose which makes it highly functional in assisting brake application. The problem is in the release.
While it takes much more effort to apply the brakes with the vacuum hose disconnected from the booster (and blocked off) I have no brake release
issues.
Still puzzled!!! 
76 Kombi (current)
75 Kombi
71 Beetle
69 Beetle
69 Beetle
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matberry
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| posted on October 29th, 2013 at 10:07 PM |
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The brake pedal pivot is free and not semi siezed?
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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vlad01
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| posted on October 30th, 2013 at 01:53 PM |
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my experience with pedal not returning or too slow to return. both cases was rust in the MC bore. replaced or reco fixed mine. Though like above
could be other things.
blocked MC intake ports? return spring, booster, mechanical issues with pedal etc..
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE |
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jamsha71
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| posted on October 30th, 2013 at 10:33 PM |
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Hmm, master cylinder is brand new. I replaced it because I thought that's where the problem was.
It's nothing to do with the brake pedal mechanicals either, because with the vacuum hose disconnected from the booster, the movement is totally
smooth.
Time I took it to an expert I think. Will let you all know the outcome.
76 Kombi (current)
75 Kombi
71 Beetle
69 Beetle
69 Beetle
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matberry
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| posted on October 31st, 2013 at 08:24 AM |
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Booster then....easy to replace with new.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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vlad01
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| posted on October 31st, 2013 at 02:03 PM |
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yeah sounds like booster, some valves not working right but the sounds of it.
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE |
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jamsha71
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| posted on November 2nd, 2013 at 04:01 PM |
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| Quote: | Originally
posted by matberry
Booster then....easy to replace with new.
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Ha! I replaced the booster a few months ago with a new one and things were working fine for a while.
I certainly wouldn't have described the job as easy though because the bolts on the new booster didn't line up. It was actually a pain in the a* se!
76 Kombi (current)
75 Kombi
71 Beetle
69 Beetle
69 Beetle
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AA003
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| posted on November 4th, 2013 at 05:36 AM |
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Are the hoses proper vaccuum hoses? Don't just look for blockages.
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!
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