1968 FJ40 Steering Box Shaft Spline Size?

[Spike Strip]

1968 FJ40 Three-on-the-tree column shift

I got a rebuilt Steering Box from a MUD Vendor some years ago and am now just getting around to putting it together...

But I found the splines on the end of the shaft for the steering wheel are larger than the one that was removed.

Are there differences in these one-piece boxes over the years?

The larger one is 17mm +

The one that fits is 15mm+

 

[EWheeler]

1968 FJ40 Three-on-the-tree column shift

I got a rebuilt Steering Box from a MUD Vendor some years ago and am now just getting around to putting it together...

But I found the splines on the end of the shaft for the steering wheel are larger than the one that was removed.

Are there differences in these one-piece boxes over the years?

The larger one is 17mm +

The one that fits is 15mm+

View attachment 3945260View attachment 3945255View attachment 3945256

What is the spline count? There was a change around 9/69 from 36 spline to 33 spline for the steering wheel.


edit: it was 7/69 that it went from 36 to 33.

 

[charliemeyer007]

FJ40 and FJ45 Manual Steering Wheel, Column Steering Box, Dampener, Steering Coupler, Steering Wheel Cover - Specter Off-Road

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[firemanj92]

@Living in the Past can probably shed some light on your question.

 

[Spike Strip]

After 15 attempts trying to count splines on the shafts, I've determined I need new glasses. (or better eyes).

But it looks like the larger 17mm one has 36 or more...

 

[charliemeyer007]

Perhaps you can find the correct mating part that fits.