-
Hi Guest!
You can help ensure that British Car Forum (BCF) continues to provide a great place to engage in the British car hobby! If you find BCF a beneficial community, please consider supporting our efforts with a subscription.
There are some perks with a member upgrade!**Upgrade Now**
(PS: Subscribers don't see this gawd-aweful banner
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
Bleeding brakes
- Thread starter Guinn
- Start date
Share this page
kennypinkerton
Yoda
Offline
Is that the white plastic thing under the master cylinder?
tony barnhill
Great Pumpkin - R.I.P
Offline
I think you're talking about that funny shaped thing on the inner fender to which all your brake lines run (usually called the Pressure Failure Switch & Body Assembly)...When you're bleeding your brakes, you should disconnect the wiring to the pressure failure switch & then unscrew the switch out of the body about 3 turns so it doesn't make contact inside the actuator.
I think...
I think...
kennypinkerton
Yoda
Offline
My pressure fail switch is screwed into the bottom/center of the master cylinder... White plastic with a metal plunger.
tony barnhill
Great Pumpkin - R.I.P
Offline
You have a boosted brake system - he doesn't.
kennypinkerton
Yoda
Offline
Sorry, I thought he was asking about the same 78 B he mentioned in the other thread.
tony barnhill
Great Pumpkin - R.I.P
Offline
Oh, well if he is - I'm dead wrong! & the actuator is up inside the master cylinder...but you still disconnect the wiring & back the switch off.
tony barnhill
Great Pumpkin - R.I.P
Offline
Only 1 MG - JEEZ! Ya gotta get with the program!