So my clutch master cylinder is shot on my 98 SR5 4x4, as appears to be a somewhat common problem. I removed both the master and slave to inspect and have a couple questions if there's anyone who's already replaced theirs:
1) Both the master and slave are stamped AISIN. Can anyone else confirm if this is the original part (and therefore no point in paying the dealer top dollar for something I can get elsewhere), or if this has already been replaced by the previous owner. If so are the AISIN parts low quality as this one obviously wore out sooner than I thought (although I have no way of knowing how long it's been installed).
2) Once I have disconnected the master from the pedal, if I push the pedal slightly it springs itself all the way to the floor and stays there. Is this normal? I would have thought that the spring would force the pedal back up.