2000 Ford F-350 Clutch Won't Disengage
You may want to try and bleed the system hydraulics. If the pedal comes back it's likely the slave is leaking. You can look under the bell housing to see if filud is passing through the bottom if you see fluid then you've found your problem again try bleeding the system to verify.
Suggested Repair
Bleed the hydraulic clutch system and inspect under the bell housing for fluid leakage. If bleeding does not restore full clutch disengagement, replace the slave cylinder.
Conversation Summary
The owner of a 2000 F-350 4x4 six-speed manual reported that pressing the clutch pedal did not disengage the clutch, making it difficult to shift, and also noticed an intermittent battery light. Experts explained that a failed or leaking slave cylinder can prevent hydraulic pressure from disengaging the clutch. They recommended bleeding the system and checking beneath the bell housing for fluid. After the owner said the pedal still felt firm or harder to press but would not disengage the clutch, the follow-up advice was that pressure may still be insufficient and that the slave cylinder should be replaced if bleeding does not resolve it.
