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incorrect assembly rag joint


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#21 wayno

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Posted 18 January 2018 - 01:10 PM

OK here is 520 cab sitting on a 720 frame with a power steering tilt column.

The rag joint, notice my "W" bracket is almost touching the bolt head also

DSCN7697.jpg

The u-joint is connected to the power steering gear, see how close the u-joint is to the upper control arm, that is why the rag joint will not fit on the steering gear in a 2wd, as it hits the upper control arm.

DSCN7698.jpg

 

DSCN7699.jpg


 

 


#22 DIY 1985

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Posted 18 January 2018 - 04:36 PM

Wayno, I believe that the 4wd power steering type would look like Datzenmike's photos, rag-joint at the box.  Did you cut the firewall face off of the 'lower jacket tube assembly?'



#23 wayno

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Posted 18 January 2018 - 04:47 PM

Yes I cut the plate off the column tube to install the tilt column in my 520 and 521, I am going to make a plate for the 521 this time as the column has moved around for years the way I had it, there is also an air leak, the 520 I posted a photo of(1st photo above) has a rubber piece I made, but that was hard to make and even harder to install.


 

 


#24 DIY 1985

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Posted 18 January 2018 - 04:51 PM

Maybe it is like Datzenmike suggested, and I should look at the mounting bracket, where it attaches to the dash could cause the harsh angle?  The FSM illustrates three 'sliding plates' on the '85.



#25 wayno

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Posted 18 January 2018 - 05:46 PM

If you look at this photo you can see my rag joint has a harsh angle also, in the shadow my "W" bracket is also touching the head of the bolt(barely touches), I have no idea why yours is more angled, there must be some other issue, are you cab floor boards rusted out?

DSCN7697.jpg

It doesn't seem like using a 2wd column in a 4wd would cause this issue, but maybe that is your issue, I have never really looked at the plates close enough to see if the 2wd column goes threw the plate in the same place as a 4wd column plate, I have never used a 4wd tilt column and even if I had used one I would have cut the plate off.

I once made a column that had the rag joint on the power steering gear work, I cut some of the upper control arm off so the rag joint cleared, but as soon as I found a proper column I switched over.


 

 


#26 DIY 1985

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Posted 19 January 2018 - 06:32 AM

No significant rust on the floorboards.  I have a 2wd, PS, tilt column on a 2wd, PS, tilt vehicle; but I'm not certain if the gear box is original or if it was made specific to a 4wd.

 

The column plates look the same in the FSM, so long as they are tilt-type or non-tilt type.  However, it looks like there are eight different overall lengths of columns from wheel to box according to the Service Data and Specifications in the FSM; you have wheel-drive (2 or 4), gear box (PS or MS), and tilt or non-tilt.

 

Btw, If anyone is trying to replace a combination switch on these trucks, the diameter is specific to tilt-type or non-tilt 'lower jacket tube, based on the drawings.  I ordered a new aftermarket switch, likely intended for non-tilt, but it didn't seem to matter because the levers and critical electrical components seem transferable from one to the other.



#27 wayno

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Posted 19 January 2018 - 05:11 PM

They made two different types of power steering gears, the plumbing(how it connects) is different, they are rare.

2wd or 4wd use the same power steering gear except for that rare type I mentioned above, the 4wd truck upper control arm is mounted different, that is why they can have the rag joint at the steering gear as the upper control arm is not in the way on the 4wd chassis.

If your using a PS 2wd tilt column on a 2wd PS truck you should not be having issues, issue happen when you start using PS columns on non-power steering trucks or vise versa.

The combination switch interchangeability has to be close to the same years, I have transferred the guts from one to the other so the plugs would be the same as the wiring harness I was using, but there are differences, the horn wire and turn signal assemblies are different on some comb switch assemblies and are not transferable, the headlight assembly has never been an issue for me, they all are interchangeable for me so far.

Tilt columns have larger tubes than non-tilt columns, so the combination switches are made to fit whatever column you have, whenever I buy a column, I try to buy the year I need, I have all early wiring harnesses, so I need to find/buy early switch hardware which didn't used to be an issue when I first got into this shit, but now it is a pain as there isn't a lot of 720s in the yards anymore.