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darrel in ND 
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Joined: 22 Nov 2009
Location: Hebron, ND
Points: 8720
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 Topic: torque limiter, most likely....?
Posted: 13 Jun 2020 at 6:51am |
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My son is trying to get the last of seeding done in my absence, due to my taking a job, and is way behind. He's pulling a 28 foot concord air seeder with the 8550. Yesterday he called me up and said that the tractor quit moving, just as if you stepped on the clutch. Told him to just stop until I get home. Went over to the field to check it out with him after I got home last night. Started it up, it moved probably about 50 feet, then came to a stop. Tried a lower gear and it went a little farther. Had Wyatt watching the shafts through the hinge. He said that both shafts quit turning when it stopped. Just about has to be the torque limiter, not.....? Thanks, Darrel
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DrAllis
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Joined: 12 Sep 2009
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Posted: 13 Jun 2020 at 6:57am |
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Does the STEERING work??? Working steering means a good torque limiter !! Does the 1800 RPM red lite on the instrument panel work?? If the red lite is "on" and the steering works, your transmission pump has failed. They are known for having drop box failures. I think splines on a shaft ??
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DrAllis
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Posted: 13 Jun 2020 at 7:11am |
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Also, try the range trans in LOW and HIGH.
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darrel in ND
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Joined: 22 Nov 2009
Location: Hebron, ND
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Posted: 13 Jun 2020 at 7:58am |
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Tried high and low range both. Did it in both ranges. When it stops, no steering, 1800 rpm light comes on. Darrel
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shameless dude
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Joined: 10 Apr 2017
Location: east NE
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Posted: 13 Jun 2020 at 8:39am |
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rut roh! i know where the money is gonna go now that Dad is making! whew!
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Ray54
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Joined: 22 Nov 2009
Location: Paso Robles, Ca
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Posted: 13 Jun 2020 at 2:38pm |
 shameless dude wrote:
rut roh! i know where the money is gonna go now that Dad is making! whew! |
 What are you saying,  no AC parts an ........................he will have to use a  green one. 
Hope you find parts easy Darrel, I never had anything but old stuff ether.
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DrAllis
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Posted: 13 Jun 2020 at 6:43pm |
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Sounds like the transmission is very low on oil.
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darrel in ND
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Joined: 22 Nov 2009
Location: Hebron, ND
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Posted: 13 Jun 2020 at 9:41pm |
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Transmission oil level is good. We unhooked it from the concord today. Tried moving it away under its own power. Goes a few feet, and BOTH shafts quit turning when it stops. Step on the clutch and take it out of gear, and the top shafts over a few seconds, goes back up to speed. I pulled him to the edge of the field, and he had steering the whole way....top shaft was turning. darrel
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DrAllis
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Posted: 14 Jun 2020 at 8:44am |
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The torque limiter on one of those (which I've never worked on) is a double disc set-up. So, there must be something hooking up some of the time allowing that top driveshaft to turn and then everything works....for a little while. A big job to pull the engine on one of those big tractors for sure.
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