You can replace the clutch master cylinder, on your Ford F250 7.3 liter super duty truck, by first removing the hydraulic line. Next, unbolt the master cylinder. Reverse the process to install the new master cylinder.
you bleed it just like you would blled your brakes 2 people one pumps then hold clutch the other opens bleed screw on slave cylinder till you get stream of fluid no air about 2 times then refill master cylinder but there is no bleeder screw on clutch
The 2004 Ford F-250 owners manual shows ( 6 quarts ) WITH ENGINE OIL FILTER CHANGE ( so I assume that it still has the 2V cylinder heads because the 2004 F-150 with the 3V cylinder heads uses 7 quarts with filter change )
You can't adjust the clutch. It's a hydraulic system. The best thing to do would be to hire a good mechanic to replace the system. My guess would be that your slave cylinder is bad. That's inside the tranny, behind the clutch plate.
There are a number of steps involved in changing the oil pump on an old Ford f250. It is recommended to take the truck to a professional garage to have it serviced, though it is possible for a person with the correct skill set and experience to change it themselves.