Hi Eric,
I do not have precision measuring tool, but I took my adjustable wrench and compared the Pittman shaft diameter at the thread, and at the spline portion on each shaft. In my case the diameters at both points between the 72 box and the 74 box are the same. The angle of the Pittman shaft relative to frame is the same for both boxes as well. I hope this proves to be true when I exchange the arms because I did not take the 74 idler arm when I removed the 74 box.

I am a fan of AutoZone tools borrow policy. I did wonder if they had a Pittman puller. I am off to AutoZone after submitting this message.

I already have the box's mounting bolts loosened up so if I have to pull out the 74 box to remove the Pittman arm, then NBD.

Do you think I should just go with checking the spindle's castle nut tightness or go ahead and replace the bearings.

Eric, I would have struggled for days before I could figure out my error. You took away a bit of anguish associated my not knowing WTF, I remain your loyal customer and refer others to your company often.

Joel G
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Antique Swedish Steel 71 142E color V#102