As mentioned in my previous post, the actual removal of the king pins and re-installation (and reaming) of the new brass bushings was done at Lincoln Clutch and Brake for what I felt was a very reasonable sum of $55. While this was being done, I cleaned and painted the I-beams and radius rods I planned to use. I acquired a set of radius rods (as best I can recall I got them from Keith, the site owner and administrator) which were much cleaner and shinier than those I removed from Frodo, so I decided to use those instead. I purchased new tie rods, an adjusting sleeve and a drag link from Autozone, cost me $166. I got everything primed and painted. Here's a pic after the king pins and I-beam bushings were installed:
Make certain that you install the correct spindle onto the correct I-beam. The steering knuckle MUST be on the same side as the steering stop pin, and is on the bottom of the spindle, as in this pic:
I put the I-beam bushings in first, so I wouldn't have the extra weight of the spindles flopping around on the other end. I used Prothane red polyurethane bushings on the beams and radius rods. These do not come with the metal shells. You must reuse the original bushings metal shells, so do not remove them from the I-beam. The part numbers are: I-beam 6-604 and radius rods 6-1207.
I encountered an interesting little "HUH?" as I was cleaning the I-beams. A previous owner had replaced the bushings with stock metal shelled rubber bushings, but on one of the beams he seems to have forgotten a step: he didn't get the old metal shell out before installing the new one!
I had a good laugh over that one! I decided that it wouldn't harm anything to leave it as it was, and I didn't want to have to tear out the old shells, just to install new OEM bushings and have to remove the rubber part. I ground down the extra metal to the height of the 'new' shell and called it good. The new bushings are a tight press fit into the old metal bushing shells, even when greased, as all polyurethane bushings should be or they will squeak like a mouse on steroids!
![Image](http://i53.photobucket.com/albums/g80/flyboy2610/John/Truck%20pics/King%20pin%20install/100_0479.jpg)
The i-beam bushings came with some little tear open plastic tubes of grease, but I knew there wouldn't be enough to do the whole job. I went up to Autozone to see if they had any grease. The clerk suggested Mobil-1 synthetic grease, as they didn't have grease made just for poly bushings. I bought a can and came home to do some research before I opened it, to see if others had used it for this job. It turns out the clerk was right on the money. Many people form various automotive sites have used this same grease for their poly bushings and have been very pleased with it. You do NOT want to use regular grease as it will attack the bushing material!
So, I was all set to install the bushings, but how to press them in? Ford makes a special tool for the job, but I'm sure it's hard to find and pretty pricey when you do! So I made something. I cut three pieces of 2" x 3/16 steel bar. One is 1.990" inches long, the other two are 1" long. In the long piece, I drilled a 1/2" hole through the center of the piece. I then welded the other two pieces vertically on each side. This allows me to straddle the metal I-beam bushing shell, but be snug enough so the tool doesn't wander. I had to weld this with flux core wire, as I am out of shielding gas for MIG. (I really don't care for flux core. It makes a lot of smoke, and I can't see what I'm doing as well. Plus trying to get the welding gun in there to do the welds!) Here's what it looks like:
To get the bushings started, I had to use one of the big metal washers for the radius rod bushings. This is because the length of the I-beam bushing and the width of the I-beam end exceeded the length of all the 1/2" bolts I have on hand. I could have run out and gotten some 1/2" all thread, but.... nah! Here's how I got the bushings in:
First, put on a disposable glove of some sort, either latex, vinyl, or rubber. This will keep you much cleaner. Get a glob of grease (Mobil-1 synthetic is even red like the bushings!)
and liberally coat the metal bushing insert.
The insert can be pressed easily into the bushing by hand. You want to do this now, as the bushing will compress during installation into the I-beam, making the insert much more difficult to install later.
Now, slather some grease on the outside of the bushing.
When installing the I-beam bushings, note that the flanged side of the bushing goes against the flanged side of the original bushings metal shell.
Get one of the metal washers that go on the radius rod bushings, a 1/2" bolt and nut, and several washers. Slide a couple washers over the bolt, insert the bolt through the bushing, insert the bushing into the end of the I-beam, place the radius rod washer over the bolt, and screw on the nut. This is what it will look like:
Tighten down the nut and the bolt will draw the bushing into the I-beam. The non flanged side of the bushing will contact the radius rod washer, preventing you from drawing the new bushing all the way into the shell.
Remember that tool I made earlier? Well, now is when I needed it. I removed the bolt and washers, and redid the assembly (minus the radius rod washer) with the tool I made.
This shot shows why I made the center piece the length I did. It was the distance between the outer edges of the old metal shell, plus two time the thickness of the steel bar, plus about .005" for clearance.
Tighten down the nut, drawing the bushing the rest of the way into the I-beam.
Do the other side the same way.
Now we get to install the king pins themselves. In addition to the king pins, bushings, and grease caps, these pieces came in the hardware set:
I knew where the thin metal shims were supposed to go, but I wasn't sure about the thick washer looking thingies. But my friends here helped me figure out that they're grease seals, and go between the top of the I-beam and the spindle.
So, mount the I-beam in your bench vise, top side up.
Remember how I said I would address the issue of hard to remove king pins? Anti-seize is your friend!
Put on another glove and get some anti-seize on your finger, then coat the inside of the I-beam (NOT inside the spindle bearing!) liberally.
The king pin has a slot in it into which a retaining bolt must fit.
When you install the king pin into the spindle, you lose sight of that slot. A helpful tip is to mark the top of the bolt so you know where that slot is, even if you can no longer see it.
Slide the king pin through the top of the spindle about 1/2-3/4" and slide the metal seal over the bolt. They fit pretty snugly.
Now set the spindle in place on top of the I-beam, with the slot in the bolt facing the I-beam.
Take one of the bearings that came in the kit, and insert it between the bottom of the I-beam and the spindle. The bearing that came with my kit is a sealed bearing, there is no way to grease it. Your kit may have a standard bearing, in which case you will need to grease it well before installation. In either case, install it open side DOWN to help prevent water from getting into the bearing.
Hopefully, it is a snug fit, requiring a few light taps with a plastic hammer to get it where you want it. Use a punch and a plastic hammer to tap the king pin a couple of inches down. Check up and down play in the spindle. Hopefully, there will be none. If there is play, tap the king pin back out from the bottom, and use the thin metal shims provided in the kit. Install these on top of the I-beam. You want the grease seal next to the spindle. Repeat the process until all play has been removed. In my case, the bearing and the grease seal were sufficient on both beams. I didn't have to use any shims!
When all play has been removed, tap the king pin down until the slot on the pin aligns with the slot in the I-beam. Install the retaining bolt, lock washer, and nut. Put the grease caps on.
Along with the grease Zerk's, there were 4 small plugs. I Installed these in the grease caps to keep junk out of there during the installation of the I-beams onto the truck. These will be removed and replaced with the Zerk's during the finishing up phase.
Next, we'll go put these back on the truck.
Thanks for reading!