brake grease - for seals inside master cylinder ?

[Geoff Richings]

OK - I have managed to get replacement Honda piston assemblies for my
accord master cyl. In their workshop manual it says to lubricate
certain bits on the assemblies with special honda silicone grease -
this is stuff sitting in the brake fluid ! Seems a bit odd to me. Any
comments welcome. I have a part no. for the Honda grease - but is
there an equivalent.

[Eric]

When I was rebuilding m/c's and wheels cylinders some years back (15-20
years!) we used to get a small packet of red-coloured 'brake grease' in
the new seal kit. It was used to lubricate the seals on assembly. It
is miscible with the brake fluid and so causes no problems. I don't know
where you would buy it other than a motor factor, but under your
circumstances I would be inclined to buy the Honda stuff, it is unlikely
to cost much.
Don't confuse this brake grease with copper grease, 'Copperslip', which
some people also refer to as 'brake grease' - that stuff is purely for
caliper slides and such like - don't get it on rubber!.

When rebuilding master cylinders I used to re-bleed the brakes after
about a week - to flush out any particles or contamination that had got
in during the work.

Eric

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[Dave Plowman]

In article <13141ced.0208...@posting.google.com>,

Interesting. Although it's not recommended, it's meant to be possible to
mix ordinary brake fluid with the silicone stuff. So I suppose certain
silicone grease must be ok. But it's always been the red rubber stuff I've
seen on a new cylinder - although I've not fitted one to a newish car.

--
*Real women don't have hot flashes, they have power surges.

Dave Plowman dave....@argonet.co.uk London SW 12
RIP Acorn

[AWM]

"Geoff Richings" <geoff...@btinternet.com> wrote in message
news:13141ced.0208...@posting.google.com...

One reason is to trap any grit that gets in at the servo end of the
cylinder, also normal brake fluid isn't a good lubricant/anti-corrosive.
Lucas/Girling "Red rubber brake cylinder grease" should be OK try an LSUK
(formerly Lucas Service UK) outlet.
This stuff also used to be sold under the Beta parts name by most motor
factors.

[Geoff Richings]

Thanks - that makes things a little clearer - I'll go with the Honda
stuff, prob a little sachet at high price, but I don't need a
bucketful.btw - anyone know much about servos ? I have the slightest
'hiss' when I touch the pedal - almost inaudible accept while ticking
over. Am hoping a new cyl to servo seal will fix this. Any ideas - mot
looms ! My old sierra failed on the same thing a while back.
"AWM" <not...@nowhere.net> wrote in message news:<aj81b6$ntm$1...@knossos.btinternet.com>...