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7000Joe 
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Joined: 14 Jan 2012
Location: Northwest Ohio
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 Topic: 7000 front tire wear
Posted: 14 Jan 2012 at 11:26am |
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First time poster perhaps someone can help with our 7000 front tire wear. Tractor is many used on road pulling gravity wagons. I tightened the steering and no bearing or spindle problems. We have ran 18 lbs to 35 lbs tire pressure and higher pressure seems to increase wear. Three rib firestones currently installed. TIA Joe
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Jordan(OH)
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Location: Celina, OH
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Posted: 14 Jan 2012 at 11:58am |
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what kind of wear?
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7000Joe
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Posted: 14 Jan 2012 at 12:09pm |
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Outside rib then center rubber wear. Never noticed it when tractor was primarily used in field but can't get more than three years on a set of fronts. Its not like its on the road everyday. Tractor doesn't pull left or right. Thanks. Joe
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DrAllis
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Posted: 14 Jan 2012 at 12:15pm |
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Assuming your toe-in is set correctly, you have what I would consider to be a normal occurance on a AC model 7000 tractor. The genius engineers have the spindles tipped so that a larger/wider tire won't rub on the steering arm at the top. The result is the rapid wear of the tire because it is tipped (called caster or camber? I can't ever remember). All you can do is run them for a while and then dismount the tires and turn them around. Maybe a 5 or 6 rib tire would be better than 3??
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Hurst
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Posted: 14 Jan 2012 at 12:36pm |
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Is this only on the standard duty front end? My 7000 black belly with the HD front end doesn't have this problem, in fact, the tires on it are pretty old and have a lot of life left on them and this tractor sees quite a bit of road usage. I have 4 rib tires, which probably helps with road wear.
Hurst
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1979 Allis Chalmers 7000
5800 Hours
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7000Joe
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Posted: 14 Jan 2012 at 12:36pm |
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We have ran four rib and the wear was worse. We have taken rubber off the rim and reversed to get another year. I have the tires moved in for 30 inch rows. Years ago we ran with the fronts out maybe two holes more with front weight installed and the wear wasn't as bad. Toe-in is correct as both fronts wear the same and the tractor steers straight with no side to side pull.
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BobHnwO
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Location: Jenera Ohio
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Posted: 14 Jan 2012 at 12:39pm |
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Neighbor got a new 10X15 front tractor tire 3 years ago,it's wearing a lot faster than his old tires.
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Why do today what you can put off til tomorrow.
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7000Joe
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Posted: 14 Jan 2012 at 12:40pm |
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1976 7000 with probably standard front end. I didn't know there was a hd front. Gives me something to investigate. Thanks. Joe
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Hurst
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Posted: 14 Jan 2012 at 12:45pm |
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HD front was only available on the black belly models. It had a bolster to accept the standard 7000 series 8 lug front axle. When you moved your front tires in, did you move the rear tires as well? We had a tractor that would eat tires because the front tires were not matched to the width of the rear tires. You can have too much toe in and no pull, it just cancels out. Can you see any noticeable wear patterns on the tires? Sometimes you can tell how the rubber is "tearing" from the tire as it wears.
Hurst
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1979 Allis Chalmers 7000
5800 Hours
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7000Joe
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Posted: 14 Jan 2012 at 1:07pm |
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I only remember moving the fronts to better track with the rear for pulling a 28 applicator. The rubber appears to wear off the outside of the rib and tire. The bottom of the front tires are closer to tractor center than the top or are tilted inward instead of running the thread flat on the road. 7060 or 7080s I have looked at the tire is more straight up and down.
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Kevin in WA
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Posted: 14 Jan 2012 at 3:02pm |
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I have seen several maroon belly 7000's with HD front axle.
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Tony Elo
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Posted: 14 Jan 2012 at 3:25pm |
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Doctor Allis,thats camber.A lot of tractors have the top of the wheel leaning outwards,(positive camber) usually in the field when turning it will help the tire to dig in and turn in softer ground.Unfortunalelyit is not acjustable in these tractors,only the toe is acjustable,make sure the tires sit so all the ribs touch the ground on a hrad surface.If you have too much air pressure all of the tire will not contact the ground
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Hurst
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Posted: 14 Jan 2012 at 3:29pm |
 Kevin in WA wrote:
I have seen several maroon belly 7000's with HD front axle. |
It only came from the factory on black belly models. If I remember correctly, it was one of the defining aspects of the 7000 Special. It should be a pretty much bolt-on upgrade for a maroon belly if you have a 7000 black belly HD front end, as the y had the same frame rails and sheet metal. Hurst
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1979 Allis Chalmers 7000
5800 Hours
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smokey
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Posted: 14 Jan 2012 at 3:35pm |
7000 Joe I'am sure you have got to get use to it, mine is a 7000 Black belly it has the standard front end 6 bolt wheels and it eats also! and I've tried just about everything and it don't correct it, so my thought is we'll just have to stay off the pavement.
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John (C-IL)
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Posted: 14 Jan 2012 at 4:02pm |
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My IH 1066 does the same thing, I think it is inherent on tri-ribs with road miles. I haven't owned my 7060 long enough to notice and it doesn't see the road but about 40 miles a year.
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captaindana
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Posted: 14 Jan 2012 at 6:19pm |
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Wow 7000Joe great question! I am working on my late 1970 XT III and the original front tires are worn just like you said. My old 180 did the same. The camber is so much as the Dr said they just wear a lot. I am fortunate now to hardly ever hit pavement with my field and barn set up. I guess I will swap tires.
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captaindana
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Posted: 14 Jan 2012 at 6:26pm |
Worn like this! 
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7000Joe
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Posted: 15 Jan 2012 at 5:57am |
Thnaks all for the replies.
captaindana - it is much worst than your picture. Our 180 wears much more even on the road but doesn't see the road much anymore. Once I was 5 miles from home hauling to an elevator ( with 7000 ) and founds cords showing. Finished the trip maybe 12 miles and blew the worn out tire .25 miles from the barn.
Tony Elo and Dr. Allis - sounds like normal red belly 7000 front - too much positive camber. I have lowered front air pressure until the tire looks half flat but it wears better. Brothers and nephews see a half flat tire and put air in. My father purchased this 7000 new in "76 and it only gets maybe less than 100 hrs a year now but one of its main jobs it pulling gravity wagons to bins or elevator.
Hurst - I think I'll check the bone yards for a HD front end or try some different tires than the standard 3 rib.
Thanks all for the help! Joe
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