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Old 02-13-2019, 09:30 PM   #1
pinball73
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Default Stearing sector problems

Ok guys & gals! some time I put a post on hear about too much slack or play in the center going down the road. I finally got time to take it apart & this is what I find! to start with it is a seven tooth sector in a 1929 two door sedan. I have replaced the cross shaft, the worm gear & the bushings top & bottom. it should be a good sector, right? after tearing it down I find I have slack between the worm gear & the cross shaft. it can not be adjuster out with the adjustment screw on the removable cover. hear is what is blowing my mind! what ever is left of it. after close inspection I find the worm gear teeth are bottoming out on the cross shaft gear. after some work with a caliper & mike I find that the teeth on the cross shaft are just about .2000 taller than they are on the old gear I replaced & not as wide at the base of the teeth. have I just bought one or two bad gears & installed them? they were new from Snyders when they were installed. this one has really got my goat! any body had a problem like this or is it just my good luck.
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Old 02-13-2019, 11:18 PM   #2
MAG
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Default Re: Stearing sector problems

The 7 tooth design is not as adjustable as the 2 tooth. I have rebuilt some 7 tooth boxes and was never able to get the lash to zero at the center. That is not the case with the 2 tooth. Rebuilt several and have never had one I could not to get to zero last at Center. Admit some were more difficult to doubt always got them right.
Try to find a 2 tooth for 29 car. They are available. Some have splines for steering wheel and open segment.
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Old Yesterday, 06:52 AM   #3
Mike Peters
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Default Re: Stearing sector problems

I rebuilt a 7 tooth sector recently with a new worm and sector shaft and had the same result. Steering lash isn't bad, but not zero either. So are the repro sectors and worms the problem?
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Old Yesterday, 08:00 AM   #4
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Default Re: Stearing sector problems

Look at the bottom end of the steering shaft - the long rod the steering wheel is attached to. The bottom end of the shaft is what rides in/on the lower bushing. If the shaft is worn then the bushing cannot keep the shaft - and its worm gear centered with the sector. The shaft will ride up and down and left and right which translates to free play as it moves to contact the sector. A few thousands here makes a BIG difference. I will measure an original unworn shaft later and repost the diameter the lowere end of the shaft should be. That is unless someone else posts it first. kenp
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Old Yesterday, 08:45 AM   #5
pinball73
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Default Re: Stearing sector problems

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Originally Posted by Mike Peters View Post
I rebuilt a 7 tooth sector recently with a new worm and sector shaft and had the same result. Steering lash isn't bad, but not zero either. So are the repro sectors and worms the problem?
I am beginning to think that they are the problem! i think the worm gear teeth are little longer or the worm gear is a little larger diameter, causing it to bottom out on the cross shaft gear teeth & not allowing it to be adjusted as it should be.
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Old Yesterday, 09:04 AM   #6
pinball73
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Default Re: Stearing sector problems

ok let me run this by you! i have access to a good machine shop & i am wondering if i can have then to reduce the circumference of the worm gear so it will not bottom out on the cross shaft teeth! this would let me adjust it into a tighter mash & maybe reduce the center lash! what does ever one think about this?
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Old Yesterday, 11:00 AM   #7
Arlyn Bieber
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Default Re: Stearing sector problems

Unless I am restoring for 500 points I would never attempt to restore a 7 tooth box. Been down that road!!!! Henry changed to a 2 tooth for a reason. I suggest you do the same. Forget trying to machine the pieces to make them fit, use your money to restore a 2 tooth box.
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Old Yesterday, 07:02 PM   #8
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Default Re: Stearing sector problems

update on measurment of 7 tooth steering shaft. .748 dia. A worn shaft (bearing surface) will let your worn bottom out on the sector. Check it out with calipers. kenp
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Old Today, 08:48 AM   #9
pinball73
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Default Re: Stearing sector problems

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Originally Posted by Arlyn Bieber View Post
Unless I am restoring for 500 points I would never attempt to restore a 7 tooth box. Been down that road!!!! Henry changed to a 2 tooth for a reason. I suggest you do the same. Forget trying to machine the pieces to make them fit, use your money to restore a 2 tooth box.
well I think ever one is right about the seven tooth sector! I did go to a machine shop & we removed probably 6000 of a inch off of the worm gear & buy the way the gear was out of round quite a bit! this stopped it from digging in on the bottom to the cross shaft & seems to make it turn a little easier, but I still have the free lash in the center, not as bad as it was but more than I like. I have just about come to the conclusion that the teeth on one or both gears are not machined quite wide enough to make them mash right! not for Shure if the original henry parts are this way or if t is just after market
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Old Today, 09:05 AM   #10
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Default Re: Stearing sector problems

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Originally Posted by kenparker View Post
A worn shaft (bearing surface) will let your worm bottom out on the sector.
I HATE it when this happens...
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Old Today, 10:36 AM   #11
pinball73
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i hate it when this happens... :d
murphys law! I think he lives with me!
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Old Today, 12:48 PM   #12
daren007
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Default Re: Stearing sector problems

You will not get there with a seven tooth, Nature of the beast. With the two tooth you can virtually remove all play at center. You will start to have play as you go off center but at this point it is not a issue as the worm and sector is loaded from the wheels now into a turn. A win win deal.
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Old Today, 01:04 PM   #13
pinball73
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Default Re: Stearing sector problems

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Originally Posted by daren007 View Post
You will not get there with a seven tooth, Nature of the beast. With the two tooth you can virtually remove all play at center. You will start to have play as you go off center but at this point it is not a issue as the worm and sector is loaded from the wheels now into a turn. A win win deal.
Well I don't know what to do? do I just put it back in the car & live with what I have got or do I try to run down a two tooth sector? I have a friend not too far from me that might have one! may just give him a call. if he does not have one I think I may just bite the bullet & put mine back in the car & live with it. will let every body know which way I went a little later.
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Old Today, 01:16 PM   #14
denniskliesen
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Default Re: Stearing sector problems

Either find a 2 tooth for a late 29 or buy a steering box from Randy Gross. Just curious btw, did you buy your worm gear with or without the gear installed on a new shaft?
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