Allis 7020 PTO
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=111500
Printed Date: 13 Sep 2025 at 9:23pm
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Topic: Allis 7020 PTO
Posted By: leader58
Subject: Allis 7020 PTO
Date Posted: 05 Sep 2015 at 12:27pm
I am looking at a 7020 and i noticed when the PTO is engaged at an idle i hear a little gear noise. It goes away at a little higher rpm. Is this normal? Also how critical is the use of Allis hydraulic oil. Is universal okay? Thanks to all.
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Replies:
Posted By: Orange Blood
Date Posted: 05 Sep 2015 at 10:11pm
In every 70xx series I have ever run, you cannot tell if the PTO is engaged or not, just by listening, Idle or otherwise. I wonder if this tractor did nothing but PTO work, and the bearings are worn?
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Still in use:
HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060
Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7
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Posted By: DrAllis
Date Posted: 06 Sep 2015 at 6:52am
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Any rattling or noise in the PTO driveline could/would be considered somewhat normal under say 1500 RPM's. Oil temps have an affect on this....cold oil being quieter. Torque limiter spring center condition does too. When in the cab with the windows closed, I doubt you hear anything. Some tractors may be quieter than others, but that doesn't mean condemnation of one that is a little noisy at an idle.
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Posted By: leader58
Date Posted: 06 Sep 2015 at 7:14am
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Cannot hear anything inside the cab. Only if you put your ear next to the pto shaft. Thanks a bunch guys. What about the oil? Thanks again
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Posted By: DrAllis
Date Posted: 06 Sep 2015 at 7:41am
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If it meets A-C 821 or 821 XL specs, it is fine.
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