88 Wide Front not turning sharp

[dr..mach]

I have 3 Oliver factory wide front end tractors. The 77 and the Super 88 both turn sharp right and left. The 88 front wheels turn about half as much. I marked the steering shafts. The 77 and Super 88 shaft turns about 5 times lock to lock. The 88 only turns about 3 times lock to lock. There are no issues with it other than that, no grinding, no skips, equal turning to the left and right. Everything looks factory original. The 77 and 88 are both 1953s. Any suggestions on why it is this way? Can it be adjusted to turn like the others or do I have to change a gear box? Thanks.

 

[Josh in Pa]

Look under the front end while it?s turned all the way to one side. I bet the center steering arm hits the cast frame and stops movement, not the gearbox. Mine doesn?t turn very sharp, but I ground some off the steering arm stops so it would turn shorter.

 

[dr..mach]

Checked. It does not even get close to the stops on either side. Can easily get two fingers between the pitman arm and the stops. Both sides are the same.