[ROVERNET - UK] Brake servo rebuild(s)

[Eric Russell]

Steven,
I have done 2 and "2 halves" restorations.  If you do
everything at once, you know where you stand.  It
sounds like this is a process of discovery (like
peeling an onion).  Once you've retored an assembly,
it should be good for years.

If you are rebuilding your servos yourself, uncluding
a complete air control kit will insure that the little
valve is looked after and the visual effect of new
nylon will be appealing to you.

I used fine wet and dry paper to hone the little
cylinder in which the air control valve sits. A minute
smear of rubber grease on the new air control valve
seal might be important.

Eric


--- Steven Dibdin <sdibdin at hotmail.com> wrote:

> Hi Eric,
> 
> I think I'd like to take a shot at rebuilding them
> myself. Once I have them 
> apart I can check on the condition of the cylinder
> walls. If they're okay I 
> can just use the rebuild kit components. If the
> walls are n/s I can get them 
> resleeved here in Brooklyn, most likely.
> 
> As for the 'shiny nylon bits', what would you
> recommend? I'm guessing the 
> nylon will be fairly brittle after 38 years of
> service and I'll have treat 
> them with kid gloves. I'll give Ruth a ring today.
> 
> Shame about the brakes I was really looking forward
> to driving the Rover 
> with the sorted clutch. It's good I found out now
> and not at 70 MPH I 
> suppose!
> 
> Thanks,
> 
> Steven
> 
> 
> ----- Original Message ----- 
> From: "Eric Russell" <p6rovers at yahoo.com>
> To: <rovernet at lyris.ccdata.com>
> Sent: Sunday, January 08, 2006 11:20 PM
> Subject: Re: [ROVERNET - UK] Clutch Hydraulics -
> 2000
> 
> 
> > Steve,
> > Ruth at All British Cars is the person to ask
> about
> > bleed screws.  I don't have a package to which I
> could
> > refer.
> >
> > Ruth = <allbritishcars at shaw.ca>
> >
> > Awww....... fluid in the hose.
> > Once upon a time, I tried replacing my fluid with
> > silicone fluid (major snip of full details and
> tale of
> > woe).
> > I knew the servo(s) had leaked past the seal as I
> > drove up a steep hill on the way to work.  I had
> > reduced power and "white" smoke was pouring out
> the
> > exhaust.  I presume regular fluid would not give
> white
> > smoke but some other visual indication that
> > glycol/whatever was being mixed with fuel and air
> in
> > the carbs.
> >
> > I totally replaced all seals, bled the sytem, and
> > reinstalled regular brake fluid.
> >
> > You can:
> > 1. Rebuild the servos yourself
> > 2. Have them rebuilt locally
> > 3. Have Ruth rebuild them
> >
> > Question: Do you want the air control valve kit as
> > well with the shiny new nylon bits? I've ordered
> two.
> > Do you want a plain-Jane rebuild and hope that the
> > serve cylinder doesn't have to be resleeved?
> >
> > Anyway, all is possible.
> >
> >
> > Eric
> >
> >
> >
> >
> > --- Steven Dibdin <sdibdin at hotmail.com> wrote:
> >
> >> Hi all,
> >>
> >> Good news- The readjustment and hanging slave
> >> cylinder bleed trick worked a
> >> treat. I can now change gear sweet as a nut.
> >>
> >> Bad news- I now have no brakes! I tried bleeding
> the
> >> brakes as the pedal had
> >> become soft after Christmas.
> >>
> >> I think the rear servo has finally died. When I
> got
> >> the car this October I
> >> knew that the callipers and master cylinder had
> been
> >> professionally rebuilt.
> >> But the servos hadn't been touched. I also knew
> that
> >> only the rear servo was
> >> still connected to a vacuum source. So after I
> bled
> >> the rear callipers I
> >> noticed that I wasn't getting any real pressure
> at
> >> the pedal. Took off the
> >> vacuum line to the rear servo found what looks
> like
> >> brake fluid in the hose.
> >>
> >> Eric, do you know off hand what thread/type self
> >> bleeding nipples I need for
> >> the (Girling) brakes? I know my local factor has
> a
> >> range but don't know
> >> which ones I'll need.
> >>
> >> Oh well, I wanted to get back under cars....
> careful
> >> what you wish for!
> >>
> >> Cheers everybody,
> >>
> >> Steven D
> >>
> >>
> >> ----- Original Message ----- 
> >> From: "Paul Smith"
> <Paul.Smith at auroraenergy.com.au>
> >> To: <rovernet at lyris.ccdata.com>
> >> Sent: Sunday, January 08, 2006 5:55 PM
> >> Subject: RE: [ROVERNET - UK] Clutch Hydraulics -
> >> 2000
> >>
> >>
> >> > Speaking of which, I went through exactly that
> >> process on Saturday.
> >> > Got under car to realign exhaust after fitting
> >> towbar.  When I grabbed the
> >> > right wheel, it turned slightly... which it
> >> shouldn't with handbrake on.
> >> > Oh no, the caliper mount was loose.  So that
> >> started 3 hours of battling
> >> > the
> >> > stupid large nut on the front of the mounting
> >> point.  Ended up pulling out
> >> > the handbrake cam so I could get to it, and
> >> relocating the handbrake
> >> > tappet
> >> > via rebuilding caliper (which I can now do very
> >> quickly).  Interestingly I
> >> > lost the tappet in the process of removal, used
> a
> >> spare.
> >> > Then the bleed.
> >> >
> >> > Exhaust not touched, I'd had enough, and it was
> >> too hot.
> >> >
> >> > PVS
> >> >
> >> > -----Original Message-----
> >> > From: Vern Klukas [mailto:vern at inkspotco.com]
> >> > Sent: Monday, 9 January 2006 6:38 am
> >> > To: rovernet at lyris.ccdata.com
> >> > Subject: Re: [ROVERNET - UK] Clutch Hydraulics
> -
> >> 2000
> >> >
> >> >
> >> > Yes, it has long been my practice to detach the
> >> > slave from the bellhousing and allow it to hang
> >> > when bleeding, so the bleed screw points up.
> I've
> >> > never had the luxury of self-bleeding screws,
> but
> >> > I have contemplated them many times, usually
> when
> >> > I have my hand stuck up the diff of a P6
> opening
> >> > the rear caliper bleed screw with my cut down
> >> > 7/16 ring wrench ;-).
> >> >
> >> > Yours
> >> > Vern
> >> >
> >> >
> >> >
> >> >>Steven,
> >> >>Ruth may still have some self-bleeding
> >> bleed-screws
> >> >>which I have on all my hydraulics.
> >> >>
> >> >>In a fit of frustration with the slave cylinder
> >> one
> >> >>time, I unbolted the slave cylinder with nylon
> >> line
> 
=== message truncated ===


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