RE: Master Brake cylinder

[Richard Hudson <richard.hudson@domain.elided>]

Hi Dave

I had no problems separating my servo and master cylinder while the
servo was still fitted to the car. I seem to recall two 1/2"AF nuts
which a standard open ended spanner fitted and then the two brake pipes.
The master unit then just pulls off the two studs on the servo and lifts
out of the car.

I took the precaution of pumping all the fluid out of the reservoir by
bleeding brakes both back and front. This emptied both the reservoir and
the brake pipes that run across the bulkhead thus ensuring that I didn't
spill that nasty corrosive brake fluid on my car.

I do remember however that there was still a considerable amount of
fluid actually in the master cylinder and this required a certain amount
of caution when disassembling. As it had a habit off squirting across
the garage and all over some perfectly painted surface. Doh!

I can't remember how I eventually got out the inner circlip but I do
remember it was an absolute pig and I don't possess a set of long nose
circlip pliers..

Regards

Richard Hudson
73 Auto White Stag



	-----Original Message-----
	From:	etlddle@domain.elided [SMTP:etlddle@domain.elided]
	Sent:	28 October 1998 10:03
	To:	"todance@domain.elided"@domain.elided
	Cc:	stag@domain.elided
	Subject:	Re: Master Brake cylinder

	This happened to me, although a little more gradually.
	The seals in the master cylinder harden off and allow fluid to
	leak back in an unpredictable manner.

	There are two pressure chambers in the master cylinder,
	and overhaul consists of a new seal kit (10UKP) and
	the labour to fit it (an awkward job requiring long nosed
circlip
	pliers).

	A brand new master cylinder is not a bad plan as they are about
	100 UKP and you don't have to mess about with the overhaul or
	worry about the bores in your old one being scored.

	Plus, you get a nice new plastic reservior which you can
actually
	see the fluid level inside of at a glance.

	Seperating cylinder and servo is only possible with the whole
	contraption out of the car (although someone on this list made
	their own special spanner to avoid this) but it's a five minute
	job removing it from inside the bulkhead (firewall)

	If you got sponge first, then no stopping, the servo is probably
	fine.

	Bleed all four wheels gently on top up after reassembly or the
PDWA
	might decentralise.

	Hope this helps, Dave Luke