King pin bushings

[1968-f250]

What type of material was used for kingpin bushings from the factory? Tore down mine today, and there was plastic bushings, and the truck was not known to have ever had work on the kingpins. Would this be factory? Thanks in advance.

[BobbyFord]

Bronze was factory.

[1968-f250]

Bronze was factory.

Thanks for you help Bobby

[Busboy]

My 67 f-100 had plastic (delrin) bushings in it when I tore it down. I'm sure they were original.

[HIO Silver]

Concur. .. my low mileage, mostly unmolested '70 had plastic bushings.... contrary to the prevailing opinion on what was OEM.

[elgemcdlf]

I have never seen or heard of plastic (nylon) bushings until joining this forum. I have replaced many king pins back when I turned a wrench. Regardless of mileage sitting will cause the spindles to freeze requiring replacement. Not keeping them greased will also cause them to seize. Every set I ever took apart was bronze. They were replaced with bronze.

For those who say plastic is OEM can you find a part number anywhere? Grease caps?

I am amazed at the number of people who take apart a 45 year old vehicle and assume it is all original. Same for mileage. Every bump has less than 100,000 miles. Normal mileage would be hugging 500,000.

[Busboy]

Well if you know the history of ownership then it is certainly reasonable. Ford isn't the only one who used Delrin bushings as manufactured. GM put them in their larger trucks. For that matter the Rockwell uses them exclusively although they have a metal backing which is just to make them press in easier.

[fordman]

Well if you know the history of ownership then it is certainly reasonable. Ford isn't the only one who used Delrin bushings as manufactured. GM put them in their larger trucks. For that matter the Rockwell uses them exclusively although they have a metal backing which is just to make them press in easier.

Post a part number.

[ultraranger]

Well if you know the history of ownership then it is certainly reasonable. Ford isn't the only one who used Delrin bushings as manufactured. GM put them in their larger trucks. For that matter the Rockwell uses them exclusively although they have a metal backing which is just to make them press in easier.

Post a part number.

Yes, there were factory Ford kingpin sets that came with nylon bushings.

You asked for the part number....I'll give you three of them --factory Ford kingpin sets WITH nylon bushings:

1. C5TZ-3111-C

2. C8TZ-3111-A

3. D2TZ-3111-A

http://www.parts123.com/parts123/dyndet ... ukey=AAGCY

http://www.ford-trucks.com/forums/88493 ... ost7940307

...now, you know the facts that they did exist --direct from Ford.

[fordman]

I will do more investigation on those numbers. However you do relieze those numbers are part replacement numbers. Maybe they are just numbers that have been superceded i am unsure on that part.

[fordman]

According to the darkside link D2TZ were bronze. But that is also a replacement number.

[elgemcdlf]

Well if you know the history of ownership then it is certainly reasonable. Ford isn't the only one who used Delrin bushings as manufactured. GM put them in their larger trucks. For that matter the Rockwell uses them exclusively although they have a metal backing which is just to make them press in easier.

Post a part number.

Yes, there were factory Ford kingpin sets that came with nylon bushings.

You asked for the part number....I'll give you three of them --factory Ford kingpin sets WITH nylon bushings:

1. C5TZ-3111-C

2. C8TZ-3111-A

3. D2TZ-3111-A

http://www.parts123.com/parts123/dyndet ... ukey=AAGCY

http://www.ford-trucks.com/forums/88493 ... ost7940307

...now, you know the facts that they did exist --direct from Ford.

The only information I could find on C5 is the replacement for C5 can be had with plastic. I found no information at all saying C5 was plastic.

C8 I found the same as above. I found a version without the -a. Was -a a nylon replacement for ?

D2 has been listed as bronze

As previously stated these are all replacement parts.

[fordman]

I also found c5 and c8 available today as plastic and nylon too
We just have to deny or comfirm they were put in at the factory. I did part out a f250 that had the nylon bushings in it. But they looked almost brand new.

[Busboy]

My 67 f-100 with 87,000 original miles and very little maintenance (owned by a farmer) definitely had these as original equipment. If you have to dig through 48 years of grease and undercoating, this suggests strongly that they are original. That's it and that's all.

[elgemcdlf]

My 67 f-100 with 87,000 original miles and very little maintenance (owned by a farmer) definitely had these as original equipment. If you have to dig through 48 years of grease and undercoating, this suggests strongly that they are original. That's it and that's all.

Every bump has less than 100k on the odometer. It resets to 0 at 100k. Realistic mileage for a '67 would be 480,000 miles. Out of curiosity how do you tell the difference between 48 years of grease and 38 years of grease or 28 years or 18 years or 8 years?

Like I said before I replaced many a king pin. Every one was bronze. Don't keep them greased they seize regardless of mileage. If mileage was an indicator why tear down an 87K original truck for king pins? If a truck sits pins will seize.

Many a set were done on trucks 10 years old or less. That means your truck could be on it's 3rd replacement set. Unless you bought the truck new and knew you never had the king pins replaced your logic doesn't work.

By the way look at your odometer. Are the numbers perfectly aligned? If not your original 87k truck has over 100k on the clock. That's how us old guys knew in the old days. When an old odometer rolls over the numbers no longer align perfectly.

Pedal pads are another good indicator of mileage. Steering wheel wear. An 87k truck won't have the paint wore away on the driver's door where you rest your arm. Assuming original paint. A truck with 87k on the clock will have the original brakes and most likely clutch.