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Hissing sound when depressing the brake pedal
Posted: Sun May 29, 2005 11:19 am
by AndyS
Hi guys, haven't been around for a while (basically because the car has been running great) but now I'm getting the above sympton. Any ideas? could it be the brake servo?<br>
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thanks in advance.<br>
<br>
Andy
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hissing sound
Posted: Sun May 29, 2005 6:51 pm
by DailySprinter
Check the servo pipe, but its probably the seal on the inside of the servo, where the foot pedal depresses it, I think you can just buy that seal, it should be ok then.<br>
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No need to dismantle all the brakes, you should be able to undo the master and pull it out of the way, then undo the servo from the inside and remove and inspect and replace the seal.
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Club Stcok
Posted: Mon May 30, 2005 7:44 am
by samgamgee911
Hi - does the club stock a servo seal kit? If it is available how easy is it to fit?<br>
Thanks
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Re: Club Stcok
Posted: Mon May 30, 2005 10:32 am
by MalcGE
Club doesn't stock Servo Seal Kits, Servo rebuilds are not really a DIY proposition due to the construction method (crimped outer casing ring). However, we do stock fully remanufactured units for the Sprint on an exchange basis, details in the club mag <!--EZCODE EMOTICON START ;) --><img src=
http://www.ezboard.com/intl/aenglish/im ... s/wink.gif ALT=";)"><!--EZCODE EMOTICON END-->
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Any risk?
Posted: Tue May 31, 2005 10:40 am
by samgamgee911
Hi - thanks for the reply. I have read a few old threads on this and it would appear to be a common problem. What are the implications of the hissing - for example decreased braking ability or the chance over thime that there will be a safety implication?<br>
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Also - Daily Sprinter mentioned as seal which I assume is external to the sealed casing - any ideas where to get one?<br>
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Thanks again
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risk
Posted: Tue May 31, 2005 11:58 am
by DailySprinter
Yes there is a risk, your brakes will have very little servo effort, probably fine to start with when you first touch the brake pedal, and as it hisses you loose vacuum pressure in the servo, hence less servo effort.<br>
I'm sure it will only get worse over time, you could always try a scrap yard for one, personally I've never had one leak.<br>
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You will need a very strong right foot, plus it is an MOT failure.<br>
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Sorry, no idea where to get a seal though<br>
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