Classic/Antique Car Repair: Nash Metropolitan clutch bleeding, clutch master cylinder, nash metropolitan

Question
Hi,

I have a friend with a '58 (I believe) Nash Metropolitan, and the clutch pedal has gone to the floor.  He checked the clutch master cylinder and found it empty, so he added some brake fluid.  Unfortunately, he must have air in the line now, as his clutch pedal still goes to the floor when depressed.  He asked me if it's possible to bleed the clutch, and I said sure, since I had done it many moons ago on an old Triumph Spitfire I once owned.  Unfortunately, I don't remember where to look for the bleeder valve.  Can you help me on this?

thanks.

Answer
Hi Don,
The bleeder valve will be on the slave cylinder, however, you may find in some cases the system will bleed itself so check the pedal again.
Look at the fluid container you use to fill it and see if it was DOT 4. If it was DOT 3 you need to open the bleeder on the slave cylinder and remove the master cylinder filler cap and let it all drain out. Then fill it with DOT 4.
Clutch hydraulic systems can be a pain to get all of the air out or they can be easier than brakes to bleed.
If you used DOT 3 and have let it drain out, put some DOT 4 in and let it flush out the remaining DOT 3 and as it is draining close the slave bleeder valve while it is draining and there is still some DOT 4 in the master. Then pump the pedal in slow long strokes and you may find it is ready to use.
If fluid does not run completely through the system with the bleeder open you will probably need to rebuild BOTH master and slave. Parts are still available. They are both easy to rebuild, and the only tool you may need is a brake cylinder hone available at any auto parts store or tool truck. If you have any trouble let me know.
Howard