I removed the master cylinder and
dissembled the internal parts.
The rubber parts were in good shape.
No dry rot.
I am pretty sure that parts 13 through
19 are the same as the PA, PB, PC, and PD
It appears that the rear chamber was
tack welded so that it could not be removed. The owners
manual remarks that the cylinder is not repairable and should be
replaced if faulty.
I ground off the weld but still couldn't
unscrew the rear assemble.
I will soak it in solvent and clean it
out with compressed air. Hopefully it will work OK.