Pitman arm selection is important since they are not interchangeable between manual and power boxes. Although Saginaw power boxes have sector shafts with the same diameter and spline counts, the pitman arm clocking differs. The XJ Cherokee boxes (left) use pitman arms that are not clocked properly to work with TJ and CJ applications. Keyways in the factory pitman arms prevent re-clocking. We again turned to Sam’s Off-Road for one of its massive 7⁄8-inch-thick flat pitman arms (bottom), which lack keyways, so the arm can be clocked any way necessary.