7580 transmission interchangeablility????
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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=157167
Printed Date: 21 May 2025 at 6:49am
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Topic: 7580 transmission interchangeablility????
Posted By: victoryallis
Subject: 7580 transmission interchangeablility????
Date Posted: 12 Jan 2019 at 12:16pm
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Does a PD out of a 7060 or 7080 go into a 7580? Unknown to me my 7580 was turned up to over 300 hp and since has had multiple issues. ------------- 8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760 |
Replies:
Posted By: DrAllis
Date Posted: 12 Jan 2019 at 12:27pm
| Transmission should be the same. The Power Director clutch has more discs/plates in it on a 7580. |
Posted By: Ron(AB)
Date Posted: 12 Jan 2019 at 2:21pm
| I would check a parts book. I have noticed some gears had changes in the lube system on the early 7000 series to the later. Stuff like oil holes, groves or notches. |
Posted By: SteveM C/IL
Date Posted: 12 Jan 2019 at 5:18pm
...and you just thought it ran good! |
victoryallis wrote:Posted By: victoryallis
Date Posted: 12 Jan 2019 at 6:26pm
I had my suspicions it was a bit stronger than it should but not that bad. ------------- 8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760 |
Posted By: DrAllis
Date Posted: 12 Jan 2019 at 7:13pm
| 7580 transmissions are taxed to the max at 185 PTO HP, let alone any more than that. I've worked on two that have taken teeth off of the high range input gears. The tractor weighs a lot and has plenty of rubber on the ground and the tranny gets put under a lot of pressure that a 2wd tractor never sees. |
Posted By: victoryallis
Date Posted: 12 Jan 2019 at 7:43pm
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Currently only have high range no low range. ------------- 8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760 |
Posted By: DrAllis
Date Posted: 12 Jan 2019 at 7:49pm
| Twisted off low range input shaft I suspect. That's assuming the Power Director clutch isn't the issue. |