Clutch Linkage

Not sure about you’re setup my freight liner had bed linkage ball joints replaced them had to adjust length of rod clutch etc had problem breaking shift rod on trans finally figured out cab bushings in front being bad caused the cab to jump etc breaking the rod last time it just jumped the threads on rod really thought clutch was shot but figured it out best thing to do is remove access plate so you can see the fork engaging also check clearances on clutch adj ie 1/8 and 1/2-9/16 and if all is good replace the rod ball joints and adj for proper free play also check cab to frame bushings I made the mistake of adjusting clutch for free play and got it all out of whack took a while to figure out the real problem to start was the cab bushings

 

Just a thought have you checked for a return spring? Mine has on on the firewall

 

On my 2009 my clutch linkage rod broke and my pedal would be totally loose and clutch wasnt working at all, to change on the t660 theyre right by the fuel water seperator under the cab its hard to work on them if your not skinny -.-