I also have a 455D crawler loader/backhoe (first cousin for the 450C), HLR Powershift transmission with manual clutch. Every single is about 25 years aged and it has about 6000hrs.i just purchest a d3b & possess the similar problem with theleft pedal sticking i will check out oil to-morrow . i have an issue. is it typical for just a loud deisel kno