M sector gear -- what's up with this?

The old gear is on the left:

As you can see, our new gear is "half" of what the old one was. Why is this? Is the new one broken or something?

Any tips for installing the new one? I assume you want things lined up so that straight wheels have the gear right at mid-point..

Thanks in advance, fellas.

The goofy thing only uses that much of the gear anyway. If your old gear had never been changed, you could have just "flipped" it 180 degrees and used the unused part.

Yep, plunk 'er in there with the wheels pointed straight ahead and your new gear at it's centerpoint.

Then, take 'er out and turn some square corners. :>)

Allan

We always had to change the front ends under the H back and forth a number of times during the season for different jobs.

To this day, I consider that stop bolt to be like 'gold'. 'Twis the one item on the place that I always know just where it is located.

You just don't loose a stop bolt just as you don't run a diesel out of fuel! :>)

Allan

Installing the half moon style gear is just as you assume: Set the front wheels to point straight ahead then orient the gear on the spline so the worm is at the midpoint.

Are the teeth undamaged on the "back" side of your old gear? If so you can simply rotate it 180 deg on the pivot shaft so the worm will be working on the unworn, good teeth.

My goal in renovating the steering system is to hammer out all wobble at road speed. Right now we have it pretty bad, plus there's about 6 inches of play at the wheel. The new worm and sector should take care of the play.. Hopefully the wobble, too.

And thanks for the tip about rotating the full moon sector -- I'll keep it around just in case the new one is no better.

Of all the wobbling M's I have fixed I never needed a worm gear or a sector gear.

Worm thrust bearings, upper bolster, lower bolster, and loose wheel bearings.

Save your old gear.