Early TDs had a clutch cable that was prone to friction problems, and many of those cables were replaced for the rod installed in the later TDs and TFs.

While the rod was an improvement over the cable, it was still prone to its own problems. As the clutch face, flywheel, release bearing and linkage components wear, the location of the release bearing in relation to the fingers changes, and the rod must travel farther to disengage the clutch. This causes the rod to bind and it will bend at the threaded end.

This adjustable rod eliminates this problem by allowing you to adjust the length of the rod as the wear components go through their normal life.