I have a MOOG king pin set for my '66 F100. There are two small brass looking rings that fit snuggly on the pins. Where do they go? This is a nylon bushing kit.
Thanks.

 

Sounds like you're talking about the bearings. They go on the bottom of the I beam, between it and the spindle (should also be marked showing "top")

I just got my replacement kit but have yet to install it though. What made you decide to go with the nylon kit? I'm using the metal bushings. Figured they should last longer.

 

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I believe he's referring to the grease seals. If you look closely, each ring has a rubber lining which is "directional".

 

They do have a coating of some kind and I can see where they would be used as a seal.
But after looking at the diagram that ND posted, I still can't figure out where they are supposed to go.
I went with the nylon type for ease of doing it myself sense I am working 6 days a week and only have time in the evenings or maybe part of a sunday afternoon.

 

At the top right on the page ND posted it looks like 3178 (1968/} Whatever that means. It's a grease seal. I know the 1979's had them to help hold the grease in the top bushing. The thing is so thin it seems pointless to even have it. Especially if you squirt a little grease in every now and then.

 

Good catch. I missed that. I imagine (1968/) means it was used from 1968 onward.

 

I believe that CropDuster is correct. I know, when I did my kingpins I searched for the answer to this question extensively and found it here in FTE. Unfortunately, now I can't remember for sure but I believe that they do go on the pin, on top of the I beam, between the I beam and the spindle. The lip on the seal goes up, to retain grease in the upper section. The question still is, why is there a grease seal for the upper bushing but not the lower?? Is there more tendency for the upper bushing to lose grease? Or, perhaps the lower support bearing takes the place of the grease seal. Will wonders never cease??? On the other hand, could that number 3178 refer to the kingpin shims? ND can clarify.

 

My 1966 Ford truck factory service manual clearly shows the O-ring between the lower end of the I beam and the bearing. What I can't figure out is where the very thin shims included in the kit are supposed to go. They are NOT shown in the very clear illustration.

 

They are for taking any vertical end play out. I'm sure there is a specification for that but I don't have it. They may be mentioned in the text of your manual. My 79 spindles had one shim under the bearing on the right side when I took it apart. I have no idea if Ford put it there or someone else.

 

May I ask why you chose nylon?

 

Eric, read his post #5 again. He says why in that one.

Chad

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Thanks Chad.
John, I am not being critical of your decision. I have no personal experience with nylon but I was advised to go with brass for longevity. Let us know how the nylon turns out.
I do have some experience with the cost of the brass alternative. My "big hammer" guy did the job - he had a hard time finding the correct reamer - and the steering is a little too tight. I'm going to grease them today.
Eric

 

The trucks been down due to a worn out pinion gear with chipped teeth. I will be rebuilding the rear end soon. I tried to do all the front end work myself. In the end I had to take the I-beams down and have a shop take them apart. Even they had a hard time with them. I'll keep them greased well and we'll see how long they last.