MG MGB and MGB GT Tech Talk
Just bought my 76 MGB. Been sitting two years.
Rebuilding clutch/brake master cylinders. Brake MC came off in 10 min.... but how the heck do I get the clutch MC off?? Bottom bolt is impossible!?!?
Also, are there kits to rebuild the Servo? Do I need to??? If so, how do I remove it? Bottom bolts on it look just as impossible.
Please, I need some advice.
I can't help you with the master cylinders, but be sure to either rebuild or replace your clutch slave cylinder and hose while you're at it.
My 73 has the brake and clutch MC hooked up in the same manner.
Nothing is readily accessible but if you work at it it can be done.
If you look under the dash, there should be a square rubber squab that is an access hole. Get a long skinny ratchet extension and go at the bolt from behind the dash.
why not just rebuilt the clutch MC in situ? No real need to remove. I did mine a hundred years ago, while in high school, on the street outside my house.
Tim and John both offer good choices. The other is to pull the whole bracket assembly with both masters, then pull them off, clean the bracket, (repaint?), and reinstall the masters and bracket as an assembly. If so, don't forget the two horizontal mounting bolts that go thru the vertical portion of the firewall.
Downside to this is that many times the mounting bolts are frozen in the captive nuts.
On my 76 its quite a grouping...
BMC/Servo/huge black bracket box/CMC...
Seems like it would be a bear to rebuild in place since this is my first MC rebuild.
Don't mess with that servo. 99.44 % of them outlast the car they're on and if they don't you only have to push the brake pedal harder to stop. A quick and reliable test for any brake servo is to pump the pedal a few times, then start the engne while holding it down. If the pedal sinks lower when the engine starts the servo is working properly.
