Hi, I am new to this site and have a question to ask. I have a 1989 f350 with a 7.3 diesel with a 4 speed with overdrive. I am trying to adjust the clutch but can't find how to adjust it. Here is no rod that is visible to adjust just a hard plastic piece that is attached to the transmission area where the clutch pedal goes. Don't know if it is hydraulic or cable. This might sound confusing but not sure how else to explain it.
Thanks
Michel

 

It's self-adjusting, no manual adjustments are necessary or possible. Why do you ask, is there a problem with how the clutch is working?

 

yes having a hard time putting truck into 1st and reverse when parked also I have to push the clutch peddle very hard to the floor to start the truck

 

open the hood. while someone steps on the clutch, closely watch the clutch master cylinder for any movement. the early trucks had an issue with the firewall cracking around the master cylinder mounts, which would eventually cause flex in the firewall when the clutch was stepped down making it not completely release the clutch.

 

What Tom said, plus another thing to check for- get a good look under the dash while you move the pedal, and watch to see if the linkage is worn. Among other things, the white plastic bushing between the master cylinder pushrod and the crank arm on the pedal is notorious for wearing out and falling away. It's a common enough problem that most NAPA's, even now in 2022, have spares on the Dorman rack. I've actually never seen a Ford hydraulic clutch in the wild without serious wear on this bushing. Do a quick search for "Ford clutch pushrod repair" or something of that nature, there's a million threads on it in this and other forums. If it's bad enough that the metal has worn away too, a new bushing won't fit, so you'll need to either install a new pushrod or replace the end with a Heim joint.

Also possible you have a straight-up leak, and the cylinder just doesn't get enough travel. Check the fluid level. Look for wet spots on the lines, joints, and both ends of each cylinder.