The clutch master cylinder is under the hood, drivers side, on the firewall. It is between the brake master cylinder and the drivers side fender. The cylinder is very small in comparison to the brake master cylinder. It goes through the firewall and connects to the clutch linkage under the dash.
Best answer I've found is here (I have a 2001 F150): http://www.clutchwizard.com/fordtruck.htm Basically the problem is that the master cylinder is at the wrong angle to bleed the system completely with the master cylinder attached to the firewall. You have to take the master cylinder off the firewall and detach it from the clutch pedal, then tilt it to get the air into the line. After that, you bleed it in more or less the usual way, with a helper operating the bleed valve, but pushing the piston directly instead of pushing the clutch pedal. The alternative is to assemble the whole system off the truck and bleed it on a bench. Good thing they made the master cylinder and the brake cylinder out of PLASTIC, and put the slave cylinder INSIDE the bell housing, huh? (My slave cylinder went at less than 60K).
It is on the firewall, drivers side, next to the vacuum brake booster. It is the small reservoir closest to the fender.
Not positive on yours but usually it's like this. Make sure the clutch master cylinder reservoir is full. Then have someone push and hold the clutch pedal to the floor. Open the bleeder valve on the clutch slave cylinder, letting the fluid squirt out, close the bleeder valve. Repeat process. You do this until the clutch fluid comes out clear with no bubbles. Usually 2 or 3 pumps will do it. Then make sure the bleeder valve is closed tight, top off the clutch master cylinder fluid resovoir and you're done. Hope this helps.
A Ford dealership would be the best place to find a master cylinder for a Ford F150. Parts Geek, Parts Train, and eBay also have master cylinders for a Ford F150 for sale.
If it is a stick, it could most likely be the clutch master cylinder or the slave cyliner. Check around the master for any leaks. Also, check the transmission itself and the clutch pedal in the cab. If there is fluid on them, that is probably your problem. Another thing could be the clutch pressure plate. If it is an automatic, check the transmission fluid and consider a transmission service.
how do you adjst clutch on 87ford f150
With a line wrench, seriously.
this is a 2 man job period, top up the master cylinder and pump your petal as you would doing a brake bleed job, there will be a master slave cylinder on the transmission with a nipple on it (I don't know the actual size but I believe its 5/16" or so) it will look and feel like a grease nipple, just crack that open and shut it when the petal hits the floor, repeat as nesscary, don't forget to keep toping the clutch master cylinder The slave clyinder on my 1991 F 150 does not have a bleeder nipple !
you put the brake fluid inside the master cylinder
no you dont have to---BUT its adviseable
My Mom had the same problem with her truck.. It is due to a recalled part that is on the brake master cylinder
I believe that is called the power brake booster