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TR2/3/3A Master Cylinders

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frankfast

Jedi Trainee
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Both my master cylinders (brake and clutch) are leaking. Instead of rebuilding them now, they seem inexpensive enough to replace. It looks as though the easiest way to replace them is to remove the entire mount including reservoir and disassemble on the bench. In order to do this, does the wiper motor have to be removed? What is the easiest way to replace the master cylinders?
 
Last edited:
frankfast said:
Both my master cylinders (brake and clutch) are leaking. Instead of rebuilding them now, they seem inexpensive enough to replace. It looks as though the easiest way to replace them is to remove the entire mount including reservoir and disassemble on the bench. In order to do this, does the wiper motor have to be removed? What is the easiest way to replace the master cylinders?
Click to expand...

Remove the small access panel under the dash ,then the mounting bolts are easy to get at from the inside with a socket and extension,and the hyd.line nuts will also be much easier to get a wrench on.
Tom
 
frankfast said:
Can the whole mount be removed without disturbing the wiper motor?
Click to expand...

I don't think so, but I've always just removed the wiper motor when doing work on the masters. It's actually quite easy. First mark where the round park adjustment disc is in relation to the top cover plate. Remove the four small screws on the top cover plate and remove the plate. Then you can just lift out the connecting link and cable assembly from the wiper box. Remove the wires (label them) and unbolt the wiper assembly. I think it took me longer to type this than it actually takes to remove the motor.

Edit: BTW, one of the mounting screws for the motor assembly (actually a nut on a stud) is accessed from inside the car under the dash. Easy peasy...
 
Recently rebuilt my clutch master cylinder. I did unbolt the wiper motor mount, and disassembled the main cable from the wiper box, and left everything else alone. This, just to give me a little wiggle room to get the MC out of the car and onto the bench. If you haven’t done it before, it’s a relatively easy job. The hardest part is getting the spring out the MC “innards”. It took me a little while to plan my “attack” to get to the hydraulic line nuts...
 
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