RETRO-Mod: Jeep intermediate steering shaft

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

SquareRoot

Full Access Member
Joined
Mar 18, 2017
Posts
4,192
Reaction score
8,030
Location
Arizona
First Name
Mike
Truck Year
85
Truck Model
K20
Engine Size
350
I'm twenty seven pages deep into this thread trying to figure out the purpose.

Correct me if I'm wrong, but all this mod does is eliminates/reduces the slack in the steering by replacing easily wearing out "rag joint" with a Jeep shaft that has some integrated rubber dampener integrated in the steering wheel end?

I took for granted that these trucks have "approximate direction selector" instead of the steering wheel, do you say that these trucks can have sharp handling?

Is the dampener necessary? I can see how soft is the rubber in my rag joint, it easily "bottoms out", what would happen if it was replaced by something solid like a U joint?
Replacing it with a u joint is exactly what the jeep shaft does. Carry on.
 

Camar068

Supporting Member
Supporting Member
Joined
Feb 5, 2014
Posts
4,293
Reaction score
3,339
Location
Kentucky
First Name
David
Truck Year
1986
Truck Model
K10/LM7 5.3/4L60e/np208/3.73/32"
Engine Size
10 yrs Air Force
Replacing it with a u joint is exactly what the jeep shaft does. Carry on.
These aren't the rag joints we're looking for....move along....move along.
 

mibars

Full Access Member
Joined
May 13, 2023
Posts
268
Reaction score
442
Location
Nadarzyn, Poland
First Name
Michal
Truck Year
1990
Truck Model
Suburban V1500
Engine Size
350 TBI

mibars

Full Access Member
Joined
May 13, 2023
Posts
268
Reaction score
442
Location
Nadarzyn, Poland
First Name
Michal
Truck Year
1990
Truck Model
Suburban V1500
Engine Size
350 TBI
Did the mod, ended up buying a different one than linked above. Steering is so much more precise now!
Some notes:
-These plastic inserts holding both halves together are most likely PTFE/Teflon. It emits highly toxic fumes when heated. Do it outside and mind the wind direction.
-After removing those inserts you may end up with little bit of slop between parts, as I did. A one good hammer smack on the tube part to close it a little was enough to remove it.
-You don't need to remove both nuts holding steering shaft from a firewall, you can leave the one under brake booster and just spread the bracket a bit.
 

SquareRoot

Full Access Member
Joined
Mar 18, 2017
Posts
4,192
Reaction score
8,030
Location
Arizona
First Name
Mike
Truck Year
85
Truck Model
K20
Engine Size
350
I drilled a 3/8 hole thru one side of the outer sleeve then welded a 5/16 nut over the hole. Assemble shafts and screw in a 5/16 x 1 inch bolt with a jam nut. Tighten just enough to eliminate the slop. Never had to mess with it since.
 

plugugly

Full Access Member
Joined
Oct 6, 2023
Posts
117
Reaction score
55
Location
rocklin, ca
First Name
Damon
Truck Year
87
Truck Model
blazer
Engine Size
6.2 diesel
whats the difference in later jeeps? 97 and up?

edit: called borgeson. The earlier is 1" DD and the later is splined.
 
Last edited:

plugugly

Full Access Member
Joined
Oct 6, 2023
Posts
117
Reaction score
55
Location
rocklin, ca
First Name
Damon
Truck Year
87
Truck Model
blazer
Engine Size
6.2 diesel
You must be registered for see images attach
You must be registered for see images attach


first pic is what my son sent me when it happened. The second pic is when it was pushed back into place as I prep to drill a hole through to pin it. Another site says it should be pinned, but mine is not.
 

75gmck25

Full Access Member
Joined
Oct 13, 2016
Posts
2,266
Reaction score
2,210
Location
Northern Virginia
First Name
Bruce
Truck Year
1975
Truck Model
K25 Camper Special TH350 NP203
Engine Size
5.7
The jeep conversion for older trucks like my '75 (and I think trucks up to about '79) is more complicated, since the splined input on the steering box is different.

For those who want to spend more and buy an off-the-shelf solution for older trucks, I installed a new -Borgeson- steering box and replacement steering shaft with universal joints. Bought it when Jegs was running a special discount offer.
However, just make sure you get the right combination of steering box and steering shaft, since the size and spline count on the replacement box are different than your original. The new box has a larger diameter input shaft, so you have to buy the steering shaft that is used with newer boxes.

The new steering shaft was too long, so I cut the upper end down to what I thought was the right length and pinned it in place at the upper U-joint. However, after installation I realized I had cut a little too much for optimal engagement in both universal joints. Had to call tech support to find out that the lower part of the shaft has a slip joint that allows you to extend/adjust length of the shaft by about 3-4", so I made the small adjustment and now have it exactly the right length.

Slip joint and set screw was hidden by a rubber bellows when I got the shaft, so I didn't realize how easy it was to extend the length. It also makes it easier to install because you can shorten it about 1-2" for clearance to get it in place, and then extend it fully into the fittings.
 

mibars

Full Access Member
Joined
May 13, 2023
Posts
268
Reaction score
442
Location
Nadarzyn, Poland
First Name
Michal
Truck Year
1990
Truck Model
Suburban V1500
Engine Size
350 TBI
I drilled a 3/8 hole thru one side of the outer sleeve then welded a 5/16 nut over the hole. Assemble shafts and screw in a 5/16 x 1 inch bolt with a jam nut. Tighten just enough to eliminate the slop. Never had to mess with it since.
I will need to do something similar. I was turning wheel hard with engine off and managed to make it loose again.

first pic is what my son sent me when it happened. The second pic is when it was pushed back into place as I prep to drill a hole through to pin it. Another site says it should be pinned, but mine is not.
In the one I got shaft goes through rubber and ends with two "wings" on the joint side that would hit the yoke if the rubber would ever fail and would also prohibit the shaft from falling out. The one you have looks like it was not designed to be fail safe!
 

dd1990

Member
Joined
Nov 3, 2023
Posts
36
Reaction score
67
Location
Ventura CA
First Name
David
Truck Year
1990
Truck Model
Suburban 1500
Engine Size
350
On a side note an alternative to XJ shaft is a steering shaft from a c3500 88-94 is the best of both worlds you eliminate the rag joint but retain the crossbolt, installed one in my 90 Burb
 

Attachments

  • PXL_20240317_224142707.jpg
    PXL_20240317_224142707.jpg
    191.7 KB · Views: 37
  • PXL_20240317_225034544.jpg
    PXL_20240317_225034544.jpg
    149.5 KB · Views: 38

Camar068

Supporting Member
Supporting Member
Joined
Feb 5, 2014
Posts
4,293
Reaction score
3,339
Location
Kentucky
First Name
David
Truck Year
1986
Truck Model
K10/LM7 5.3/4L60e/np208/3.73/32"
Engine Size
10 yrs Air Force
On a side note an alternative to XJ shaft is a steering shaft from a c3500 88-94 is the best of both worlds you eliminate the rag joint but retain the crossbolt, installed one in my 90 Burb
Good to know, I drilled out my Jeep shaft for peace of mind. The GM is probably easier to find these days also.
 

90Supurban

Junior Member
Joined
Jun 21, 2024
Posts
15
Reaction score
14
Location
Midwest
First Name
D
Truck Year
1990
Truck Model
V1500
Engine Size
5.7
On a side note an alternative to XJ shaft is a steering shaft from a c3500 88-94 is the best of both worlds you eliminate the rag joint but retain the crossbolt, installed one in my 90 Burb
Is this a direct swap? Double D on the column side and same spline count at the gearbox? Looking at RockAuto at a couple of random year squares, I don't see a steering shaft listed at all. I see the one you listed, but they don't list one for a K-truck of the same year. The C3500 shows 14 spline count.

You must be registered for see images attach



$128 for a Dorman.
 
Last edited:

Forum statistics

Threads
44,167
Posts
950,737
Members
36,282
Latest member
Doug Hampton
Top