7580
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=162455
Printed Date: 22 Aug 2025 at 3:00pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7580
Posted By: ajl
Subject: 7580
Date Posted: 03 Jul 2019 at 3:38pm
| Going to check out a black belly 7580. Has 5500 hrs and is a 79 model. Cab interior looks good so seems to confirm the low hours. What should a guy look for on this tractor? Planning to keep the implements small so will not use max power often for engine longevity as I know the 426 is maxed out. Have run a friend's 8070 when the clock ticked over 13000 hrs so have seen these engines last. |
Replies:
Posted By: DrAllis
Date Posted: 03 Jul 2019 at 3:53pm
| U-joints on both rear driveshafts. The top one is the worst as it runs engine speed. |
Posted By: victoryallis
Date Posted: 03 Jul 2019 at 10:06pm
|
I got one with a Cummins repower for sale. ------------- 8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760 |
Posted By: Austin IL
Date Posted: 04 Jul 2019 at 10:30am
| Other than being cheap, I wouldn't want one. Terrible cab and way underpowered |
Posted By: Fogarty
Date Posted: 04 Jul 2019 at 10:50am
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Under powered for what ? It was never meant to pull like a freight train. |
Posted By: Austin IL
Date Posted: 04 Jul 2019 at 11:52am
| Well they surely weren't built to pull a 6 row planter. Way too much rubber on the ground for a 426 |
Posted By: bigal121892
Date Posted: 04 Jul 2019 at 2:25pm
| Back in the day, we had 7080's, and a 7580. 7580 pulled the same implements as the 7080's, and did the heavy tillage. Our reasoning was on a Blu-Jet, the power was split between two differentials. Had less wear and tear on the finals that way. The 7580 also works great on a hay mover in the winter. |
Posted By: JohnCO
Date Posted: 04 Jul 2019 at 11:40pm
|
I find you have to keep the revs up to get the power needed on a 7580. The drive shafts are the weak points of them but if kept well greased and inspected, seem to hold up well. It is a pain to grease some of the zerks though... ------------- "If at first you don't succeed, get a bigger hammer" Allis Express participant |
Posted By: GM Guy
Date Posted: 18 Aug 2019 at 1:05pm
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Did you buy it? Driveline condition is a biggie, lots of $ can be dumped there if not in good shape. Dr. Allis, any suggestions on a source for new u-joints? my #2 joint on the bottom shaft is out, and I am not paying the price Agco wants. I will likely source used in case I cant find a deal on a new one. As far as other things, check for leaks and fluid condition, and run it through all the gears, make sure the Power Director shifts smoothly, check PTO and 3pt operation, as well as remote lever travel, as there is long expensive cables in there that would be nice if you dont have to replace. :) Good luck! ------------- Gleaner: the properly engineered and built combine. If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help. |
Posted By: DougG
Date Posted: 18 Aug 2019 at 3:23pm
| Here is a Allis pic straight from the 1976 Annual Report just introduced at 185 horses |
Posted By: DougG
Date Posted: 18 Aug 2019 at 3:26pm
Here is a Allis pic straight from the 1976 Annual Report just introduced at 185 horses
|
Posted By: T in ne
Date Posted: 18 Aug 2019 at 6:48pm
|
I had a 7580 for a couple years, bought it off the neighbor around 2003 with 3200 hours, he bought it and never ran it in 10 years, he's claustrophobic. Twice the drawbar tractor of the 3788, half the pto tractor. A flatter steering wheel would have made entry easier. But seemed to be plenty of power. A 3 foot hose on the grease gun made greasing the universals a lot easier. |