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teffgrass 
Bronze Level
Joined: 30 Jul 2019
Location: SW ok
Points: 6
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 Topic: agco allis 9435 transmission problem.
Posted: 30 Jul 2019 at 11:34pm |
I bought this tractor and the 4 speed power shift doesn't shift. And the pto doesn't turn on. I'm thinking about replacing all the sensors on the transmission. It's been sitting for a few yrs so there is a bit of corrosion. Any help would be great. Thank
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Lonn
Orange Level
Joined: 16 Sep 2009
Location: Назарово,Russia
Points: 29805
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Posted: 31 Jul 2019 at 9:20am |
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If I remember right these tractors had a lot of electrical gremlins.
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Fogarty
Silver Level
Joined: 16 Aug 2018
Location: Mn
Points: 199
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Posted: 31 Jul 2019 at 3:57pm |
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My brother in law had a 9775. ( iirc)
That thing was a transmission electrical nightmare.
They had multiple dealers look at it, they called Agco at the time.
No such luck.
It did that until the day they got rid of it.
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caledonian
Silver Level Access
Joined: 02 Apr 2016
Location: Nebraska
Points: 470
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Posted: 31 Jul 2019 at 4:14pm |
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You may have a cracked sensor that is leaking oil.
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MACK
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Joined: 17 Nov 2009
Points: 7664
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Posted: 31 Jul 2019 at 8:46pm |
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You should have a code in your monitor. Not a good ground has been the biggest electrical problem I have saw. MACK
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Ron(AB)
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Joined: 27 Dec 2009
Location: Alberta
Points: 962
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Posted: 01 Aug 2019 at 10:15am |
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If that tractor has a 32 speed trans its a Massey transmission. First, talk to a experienced Massey mechanic and confirm that is does. Second, check to see if your tractor has the second generation computer installed. When the computer fails it does what yours is doing. The computer controls the power shift, pto, fwd, and diff lock. The first generation computer was faulty. They all need to be updated. I know, because I have a Massey of that year and had to do mine.
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teffgrass
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Joined: 30 Jul 2019
Location: SW ok
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Posted: 01 Aug 2019 at 5:52pm |
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Thanks very much for the reply. I'm going to repair all the transmission sensors to start with.
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teffgrass
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Joined: 30 Jul 2019
Location: SW ok
Points: 6
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Posted: 17 Sep 2019 at 8:51pm |
this tractor has a 4 speed power shift with the 4 speed range shifter. I'm trying to figure out the sensors and wires on the side of the trany It includes wire numbers 15,16,33,and 34 can someone tell me how it's supposed to be wired.
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