Is it feasible or possible to replace a broken clutch fork without removal of a TD42 gearbox on the side of a track? Just considering if carrying a spare is wise? I have never heard of one failing but you never know. My gbox was a low milage - 40,000klm replacement when the chev was done, however with all the stories that are coming out of Brunswick Diesels of late, and my own discovery the engine was not a new crate motor but a reco in a new crate, I am wondering about the actual age of some of the parts used - the box could be much older for example.