RE: [Peugeot-L] 405 brake servo hissing

From: Harshan Senadhira <harshan.senadhira_at_informatics.lk>
Date: 05/19/05


Dear John  

for me this sounds like a worn out diaphragm .. this happened to one of my 504 s 'n my mechanic replaced the diaphragm without replacing the whole servo unit.
so it is feasible to replace the diaphragm. And more of all in 405 the angle they designed and fitted the servo unit is the reason for this servo problems.
since if you have a slightly leaking break master pumb washers then the servo will be filled with break fluid which can be then harm the diaphragm. so always
make sure that washers 'n sleeve of the break master pump is good enough 'n no leakages.  

Regards,
A.M.A.Harshan Senadhira
Software Engineer | B.Sc Information Systems (UK) Informatics International Limited,
No 89/57,
Jampettah Lane,
Colombo-13
Sri Lanka
Office - (+94)-114-794 979
Home - (+94)-112-606 621

Mobile  - (+94)-777-683 405
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harshan.senadhira@Informatics.lk  

From: peugeot-L@yahoogroups.com [mailto:peugeot-L@yahoogroups.com] On Behalf Of Chris
Sent: Thursday, May 19, 2005 21:06
To: John
Cc: peugeot-L@yahoogroups.com
Subject: Re: [Peugeot-L] 405 brake servo hissing

I think you need to buy a new servo, it is not worth putting second hand on,as that is your life u are playing with,

On Thu, 2005-05-19 at 13:12 +0000, John wrote:
> Hi All, both my 405 TD's have brake probs. Both seem to be lacking
> servo assistance on occasions (increasingly). Concentrating on my
> daily car, it has no power assistance at low revs, instead the pedal
> is
> fairly firm, and depressing it is causing a hissing noise at the
> servo.. also I get a similar symptom at high speed, if I pump the
> pedal
> 2/3 times..(dangerous really)
>
> Are the servo's on these pugs a weak point? My other car has very
> similar symptoms.. Is it feasible, possible, to repair a servo or
> should I just pay £20 for a good used one?
>
> thanks
> John UK
>
>
>
>
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