Panhard bar
THE ABOVE IS COMPLETE NONSENSE!!!!! "Cross steering" AMPLIFIES steering problems in 4x4's!!!! this is because the axle CAN MOVE from side to side due to bumps and road crown, and if the drag link is "cross" the frame as shown, THE AXLE MOVEMENT CAUSES THE TIRES TO STEER BACK AND FORTH AS THE AXLE MOVES!!!!!
Here is one thing you can do IF you have leaf springs: IHC "Scout" did it for a few years, and possibly on IHC pickups. They put a flat spring element--like a leaf---across the shackles to tie the shackles together and prevent them from "tipping" back and forth, thus preventing the side to side motion.
Other causes are extreme spring "arch." Springs that are "more flat" in normal "ride" have more leverage to stay stable as opposed to "jacked up" arched springs
Of course, "the usual." Worn, broken, or cracked bushings, mounts, shackles, etc. Certainly poor alignment INCLUDING CASTOR which may have been changed due to spring changes, additions, or re-arching for height.
Certainly "normal" alignment problems such as toe, and certainly tire condition such as wear
I'm pretty sure the below is not "factory" but this is how the IHC shackle ties looked "generally" AND THEY WORK. I put one on my old 62 Landcruiser.
Front end help.
THE ABOVE IS COMPLETE NONSENSE!!!!! "Cross steering" AMPLIFIES steering problems in 4x4's!!!! this is because the axle CAN MOVE from side to side due to bumps and road crown, and if the drag link is "cross" the frame as shown, THE AXLE MOVEMENT CAUSES THE TIRES TO STEER BACK AND FORTH AS THE AXLE MOVES!!!!!
Here is one thing you can do IF you have leaf springs: IHC "Scout" did it for a few years, and possibly on IHC pickups. They put a flat spring element--like a leaf---across the shackles to tie the shackles together and prevent them from "tipping" back and forth, thus preventing the side to side motion.
Other causes are extreme spring "arch." Springs that are "more flat" in normal "ride" have more leverage to stay stable as opposed to "jacked up" arched springs
Of course, "the usual." Worn, broken, or cracked bushings, mounts, shackles, etc. Certainly poor alignment INCLUDING CASTOR which may have been changed due to spring changes, additions, or re-arching for height.
Certainly "normal" alignment problems such as toe, and certainly tire condition such as wear
I'm pretty sure the below is not "factory" but this is how the IHC shackle ties looked "generally" AND THEY WORK. I put one on my old 62 Landcruiser.
Front end help.
