Which part are you referring to as a steering box coupler?

Notice lower shaft and coupler connects to the input shaft of the steering gearbox with a clamp and thru bolt.

The coupler itself (3B676) was sold as an assembly, or only the upper section (3A526) was available.

 

3B676 is the part or part of the part, as I would need the rebuild kit or whole item. Or the replacement part. And Man love that sure make getting the right parts easy .

 

Looks EZ in the pic, but the text tells a different story.

E4HZ-3B676-B .. Manual Steering

Or with Power Steering...

E4HZ-3B676-A (marked: E4HT-3E751-CA) with 10.80" frame section modulus.

E4HZ-3B676-C (marked: E4HT-3E751-BA) without 10.80" frame section modulus.

 

WOW looks like it can be one of those deals where you pull all your hair out and then just cry. LOL
May try to match up a new one with U joints on both ends. But did find a kit that looks just like mine. But fits the Ford Bronco and F-150 Pickups.. Not sure if there the same though.
Pete

 

Absotutly not the same! What year are these Bronco/F150 parts supposed to fit?

If they 'sorta' match what you have (clamp & thru bolt connects to input shaft): D5TZ-3B676-B = 1966 F100 4WD, 1967/75 F100/250 4WD / 1966/77 Bronco different.

With P/S: Look on your steering shaft/coupler for its marked ID number, post what it is.

 

Will look at it and try to find the info.

The ones I was looking at was for a 1970 Bronco and a F-250 pickup. It has the same part number but I'm sure there different in some ways. May get the machine shop to make up a pair of the sq parts for this one if I can't find a newer replacement for it. If I have to will change out the steering column and all. As It would be nice to have tilt steering also. Give my more room to get up and back into the sleeper that way.
I believe in fixing it to fit our needs not keep it stock and all that.
Pete

 

Grrr! It's NOT the same part number. There is no way in hell that a 4WD steering shaft and coupler from a light truck will fit a heavy truck, 2WD or 4WD.

1966 F100 4WD, 1967/75 F100/250 4WD same. 1966/77 Bronco looks similar, but it's not the same.

One piece lower Steering Shaft & Coupler Assy: 1976/79 F100/250 4WD, 1979 F350 4WD & 1978/79 Bronco not the same either, because...

This type uses a rag joint to connect flange of coupler to input shaft of steering gear.

The thing is, all these vehicles including yours: The basic part number shown in pics is 3B676 .. but when you add the prefix and suffix from the text .. this completes the part number.

So: D5TZ-3B676-B is not the same as D6TZ-3B676-B .. not the same as E4HZ-3B676-A, B or C

 

I understand that do don't get your shorts in knot. Not trying to make you mad. But looks like you get that way easy. I'm sure so many questions will do that to anyone.
But just asking for help, and the one I looked at this am is the same size and sure looks the same. Now I'm not saying it will fit but sure looks like it. And no its not a Darn rag joint on the Bronco..

Again thanks for the help. You don't know how much everyone loves your helping out the board.

 

It may look the same, but looks can be deceiving.

You cannot use this (left upper: same as 1973/75) or this (right: same as 1973/77) in place of that (left lower: F600/900).

But wait, there's more! See post 55.

 

This (similar to 1976/77 F100/250 4WD ~ same pic in car parts catalog for 1978/79 Bronco), wont work either. Notice rag joint (3A525).

 

Yes I see that, But was looking at one in person this am. Now i'm sure it had been changed out from something else. But it was just like the one on mine.

As I posted before, If I can find one that will replace mine. I will be updating this part to a newer part. If this rain will let up plan on getting the numbers off mine if I can find them.
Pete

 

Just took mine apart. The round housing has lots of ware on one side of it. Cleaned and out it back together, adjusted it where the sq slides would sit in a different spot. Now it drives way better. But still needs a new one, so again if I can find a newer one that has U joints on both ends will swap it out for one of those.
Also put it back together out of time. Yes the steering wheel is not upside down when going straight. LOL Marked both pieces when taking it apart and still happened. Just shows what my luck is like HAHA
Pete

 

would some one be willing to decode my vin? I bought a 1976 l9000 with a 8v92 just wondering how the vin decodes, thank you.

K90AVB86662

 

Welcome to FTE

K90 = L9000 Diesel.

A = Detroit 6-71N 426 CID I-6 Diesel or Cummins 555 cid V8 Diesel. "A" used for both in 1976.

V = Kentucky Truck Assembly Plant.

B86662 = 1976.

 

Thank you, Number Dummy.