Hi!
Im sorting out my brake lines in the rear, and I wanted to know how I can test this thing to see if it needs replacing...



What is it called?
Apart from cleaning it up, what else do I have to do before refitting it?

Looks like a bias valve - no idea how to test if not connected to the master cyl.

_________________
Too many cars, and too little time.

yeah, bias valve sounds about right. Thanks mate!

Well, until I find out how I can suss out if I need a new one or not, I'll just blast it with some sand, and paint

That thing controls the amount of hydraulic pressure between the front and rear brakes. I have been told that they very rarely need replacing or repairing because I was in the same position as you are in.

I just put mine back on.

pull it apart and clean out crud if there is any. check to make sure piston moves freely and the o rings are not perished. if they are there is a kit you can get pretty cheap to make it all good again.

_________________
the world is a book, and those who do not travel read only a page
66 Mini Minor sponsored by http://www.lifeonthehedge.com.au/ The Dog Harness Specialists
It was a pleasure ausmini. I'll miss all you misfits and reprobates

thanks for the advice guys!!

front to rear proportioning valve..

_________________
"Show me the Mini!"

No,,,not a bias valve or a proportioning valve

it`s called a pressure limiting valve

std mini (drum brake type) ones allow more pressure to the rear that the "S" (disc) ones

& therefore 2 different kits avaliable

normally they don`t give trouble & also you can mnake them adjustable if you like

tricky hey?



easy-peasy

_________________
No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

cruel Matt...pressure limiting front to rear is also called proportioning (ask ya Dad ).....

_________________
"Show me the Mini!"

Not the same thing, Mick.. Rear pressure of this one stays same as front ,until valve moves and locks it off.
Not much difference really in pressure setting between S one and others, main difference is S has 5/8" rear wheel cyls not 3/4" so less likely to lock up.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.