AC 6080 PTO Lever not engaging pto
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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=186577
Printed Date: 02 Sep 2025 at 9:24pm
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Topic: AC 6080 PTO Lever not engaging pto
Posted By: ssefick
Subject: AC 6080 PTO Lever not engaging pto
Date Posted: 21 Feb 2022 at 11:48am
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I was putting a roll pin in the pto shift lever. The pto lever is now not engaging anything. My service manuals should be here in 2 days. Does anyone have any experience with this? Am I going to have to take the pto apart to fix this? Any help or pictures greatly appreciated. |
Replies:
Posted By: MACK
Date Posted: 21 Feb 2022 at 9:06pm
| With lever engaged, turn PTO by hand. Disengage lever and see if PTO feels the same when you turn it. Coupler may have dropped off. MACK |
Posted By: ssefick
Date Posted: 22 Feb 2022 at 6:26am
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Hi, Mac: That is what is going on. How hard is this to fix? Is there an access panel somewhere, or do I have to break open the pto and pull it out? I should have my manuals tomorrow. Thanks for all of the help! |
Posted By: AC720Man
Date Posted: 22 Feb 2022 at 9:32am
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I’m thinking it can only be accessed from a panel on the trans left rear side. I believe near where the parking brake goes inside maybe? Been awhile, we were afraid ours had slipped off during a split to replace the clutch but it was still intact. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: Alvin M
Date Posted: 22 Feb 2022 at 11:09am
| Pull the parking brake off then you can see the pto coupler |
Posted By: ssefick
Date Posted: 22 Feb 2022 at 1:42pm
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Do I need to drain hydraulic fluid? Will the lever, pad, and pto coupler all be visible? Thank you all for all of the help. |
Posted By: Acdiesel
Date Posted: 22 Feb 2022 at 8:48pm
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once you pull the parking brake cover/assy. you can see the inner PTO shaft and the coupler. check the roll pin on the arm that moves the coupler I have seen them shear. yes you will need to drain the rear end. (under the front of the drawbar) I don't believe you need to drain the Transmission oil. (can remember) you will need to have patients and a good eye to reinstall the parking brake assy. Dan ------------- D19 Diesel,D17 Diesel SER.3 2-D14, 2-D15 SER.II WF/NF D15 SER.2 DIESEL D12 SER.I, D10 Ser.II 2-720'S D21 Ser. II Gmc,caterpillar I'm a pharmacist (farm assist) with a PHD (post hole digger) |
Posted By: ssefick
Date Posted: 23 Feb 2022 at 7:03am
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Thanks, Dan, for all of the help! I don't see a roll pin figured for the pad in the parts book. Is the pad what probably slipped off of the arm, or actually the coupler like Mac suggested? Unfortunately, l just changed all of the oil last weekend. The parking brake is seized. Any gotchas besides those already passed along? |
Posted By: ssefick
Date Posted: 23 Feb 2022 at 6:23pm
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C-21 figure 14 is the only figure of the pto coupler assembly? Any help is appreciated. |
Posted By: MACK
Date Posted: 23 Feb 2022 at 9:02pm
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When you pull the side cover where the park brake is, it will be clear to you. Most likely the coupler will be laying in bottom of housing. The park brake cover is a real $%&!@# to get back in place. I made a fork to keep pads in place. Wasn't perfect but helped. MACK
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Posted By: ssefick
Date Posted: 24 Feb 2022 at 5:50am
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MACK, thank you sir! I'll make sure to do some breathing exercises. I can use the tractor with the coupler at the bottom of that bay? Do I need to put rtv or buy a gasket for the parking brake access panel. Thank you for all of the help! |
Posted By: MACK
Date Posted: 24 Feb 2022 at 8:06am
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Nothing to hurt where the coupler falls. RTV is ok. MACK
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Posted By: ssefick
Date Posted: 26 Feb 2022 at 8:18pm
 This is a picture of the inside after the parking break cover comes off. I wanted to post this in case someone else wants to see this at some point in the future. The parking break assembly is tricky to put back in. The parking break ok ever does not move very much. Is that normal? |
Posted By: AC720Man
Date Posted: 26 Feb 2022 at 8:39pm
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Thanks for posting that picture. Always wanted to know what it looked like inside, thankfully we have never had to open it to see. I was interested in a really nice 6060 that a local farmer and friend had for sale. I found out that they had loaned the tractor to someone whom forgot to release the hand brake. Yeah I know, big red light on the dash should have prevented him from leaving it pulled. Regardless of what happed I wonder what damages it caused and became gun shy to what damage it may have done. They were asking $9k for a otherwise very nice barn kept 4,000 hr 6060. Not sure how hard that repair would have been. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: AC720Man
Date Posted: 26 Feb 2022 at 8:43pm
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The parking brake does not move very much in ours but provides very good braking while the trans is in neutral. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: MACK
Date Posted: 26 Feb 2022 at 8:58pm
| well, was the coupler laying in the bottom? MACK |
Posted By: ssefick
Date Posted: 27 Feb 2022 at 6:30am
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Sorry, yes the coupler was laying dead center bottom of that bay. I moved the lever until I could get the paddle back in, put the paddle back into the pto coupler, tested a couple of times, and put the parking break back on. I will fill back up today. |
Posted By: Dave(inMA)
Date Posted: 27 Feb 2022 at 10:48am
Here's a resized image....easier to view. ------------- WC, CA, D14, WD45 |
Posted By: ssefick
Date Posted: 28 Feb 2022 at 6:19pm
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Thanks for the resized picture. The pto works now. I now need to adjust the pto clutch as it does not seem to be doing a thing. On a positive note the parking brake works now. Thanks everybody! |