1998 9400 Steering issue

Maybe someone worked on the steering box/Pitman arm and didn't center it putting it back together. Also look for a bent tie rod. Give the whole steering assembly a good inspection. Wear gloves and see if you can move anything with you hand. You shouldn't be able to move any part with you hand. You might have kingpin or alignment issues. You can jack the front up and see if there is any play in the tires side to side and up and down.

Any sign of tire wear?

You can always go down to the next red light and make 3 left turns around the block.

 

Dunno about binder but Mack has a stop that screws out on each wheel. Look on the backing plate for the brakes towards the rear. Be a hex bolt that threads into a visible nut. If yours won't turn right then this bolt likely has backed out.

IMPORTANT !!! Measure the bolt or count the threads on the left and make it equal ! There is a possibility of severe damage to stabilizers or power assist pistons ( if there ) from over travel if you go to far.

Also, unless you have unitized hubs check the hub oil while there. If this bolt backed out then a vibration caused it. Could be a wheel bearing or a bad tire. This was the case with the dog, bad wheel bearing. ( just wore, not in failure, yet )

Good hunting.

 

You can adjust the wheel cut by the steering stop like chalupa is talking about. There will be a bolt you can thread in on the spindle. It will have a lock nut on it. As long as the tires clear everything by at least an inch you should be fine. Make small adjustments at a time. The steering gear will have auto poppet relief valves that will self set to the new axle stop position. There isn't much to it, but like anything, if you do not know what you are doing, leave it someone who does! This isn't something to be messing with if you are not familiar with steering components. The last thing you want is to break something, especially steering!