If you have access to an air powered greaser and cutting torches use them. Often the combination of heat and pressure will push the old grease out. If you have a pin that won't take grease and you've cleaned out the crud try heating it. The hydraulic versions are pretty pricey. The mechanical versions can be found on evilbay or craigslist time to time. The hydraulic versions are slicker than snot on a door knob. One version is mechanical and can be powered with an impact wrench. There are presses that can be used on the truck. As far as siezed I've had a few so bad I had to split the thrust bearing, cut the pin in half, hammer the spindle upwards, cut the pin again then put the I beam in a shop press to get the remains of the pin out. If the measurment is the same on both ends then it doesn't matter. Measure the distance from the lock pin groove to the ends of the pin. Guys most king pins have a top and bottom. a machine shop can do that unless you have the tool to do it with. the metal or brass i shoul dsay bushings have to be reamed to fit inot the spindle. i think it is the same but i haven't put one back yet. i do not know about the top or bottom of a pin. the lower bearing thing is what i had to torch off to get the king pin to move at all.

the backing plate may flex enough to let the king pin go past it.

the brakes and all of that could be left on there i guess. the backing plate may get in the way of the old one coming out and the new one going in. if you are doing a complete removal and installation. theres no need to pull the king pin to remove the old hard grease. if its hard just stick something in there and dig it out. while the cap is off look in there and see if the grease is hard of soft. just take that cap off of the bottm and put the new cap or old one with the new zirc in it. but then again i wouldn't have been able to move them around quite as easily if they were. i wish these were in the truck when i was doing it. so doing this in your truck may be harder or easier depending on how you look at it. i forgot to mention that i had these out of the truck. good luck with your removal when it comes time. instead of rust and so forth in the i beam. and make sure it isn't whats holding your king pin in. i figure it had to be a part of it for some of you. i wonder if anyone else who has had a hard time getting them out had this problem. it was the spacer that was holding them in the whole time. i then reheated the i beam and i pounded them right out. so i took the torch and carefully torched the spacer out of that are with out damaging the king pin. they were just to hard to move in that little space. so i heated then and chiesaled to get them to move. i noticed that the spacer on the bottom part of the king pin between the spindle and i beam were froze up. but when i used heat to try and get the pins out it wasn't working. i them sprayed some pb blaster into the top and bottom to lube up the pin and spindle bushings. so i took the caps off of them and used soem heat to get them to turning. after i had let them sit in my garage too long. They were all sized up and wouldn't even turn. Result of this new kind of font end: untrucklike riding smoothness вЂ“ better steering control вЂ“ slower tire wear вЂ“ lower maintenance and repair costs.I had been trying to get some king pins out of a set of i beams i got from the junkyard. Secret is an exclusive new independent front suspension that uses forged I-beam front axles borrowed from big-truck design. YouвЂ™ve never ridden in any pickup as comfortable вЂ“ yet as rugged вЂ“ as the вЂ™65 Ford. Independent front suspension with big-truck durability Independent wheel action smooths away road shocksвЂ¦gives you a wonderful new feel of controlвЂ¦a new kind of driving satisfaction! Try it soon at your Ford DealerвЂ™s!

The goal was to goal was to improve ride quality, reduce tire wear, and reduce front end maintenance.ДЇordвЂ™s revolutionary new Twin-I-Beam suspension gives you two front axles вЂ“ two rugged I-beam axles to share the abuse of the roughest going! And because of forged steel I-bean construction вЂ“ just like big-truck axles use вЂ“ theyвЂ™ll stand up in severe service! Moreover, both axles are secured to the frame with forged I-beam radius rods to hold wheel alignment, cut tire wear and reduce front-end maintenance! But toughness is just a part of the story. In 1965, Ford introduced itвЂ™s Twin I-Beam front suspension.

King pins for 1984 f 250