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Hi, I have a problem with my john deere 310sg, suddenly only the 3 and 4 speed change works for me

Dagomoyac

Member
Joined
May 25, 2023
Messages
5
Location
Costa rica
Occupation
Electrónica
From one moment to the next, only 3 and 4 work for me; 1 and 2 there is no force and I checked the 3 speed change valves, they are in an acceptable range but even so I have not been able to start

I appreciate the help you can give me, regards
Dagoberto M.
Costa Rica
 

Dagomoyac

Member
Joined
May 25, 2023
Messages
5
Location
Costa rica
Occupation
Electrónica
good thanks for the scheme; I don't have 12 vdc in the 2nd coil and I gave it external voltage and I still don't see or feel that I connect the change, the 3 coils give me a good measure
 

Dagomoyac

Member
Joined
May 25, 2023
Messages
5
Location
Costa rica
Occupation
Electrónica
As soon as I can I will check again, I have it on the selector lever, down in coil 2 there is no voltage and I proceeded to feed 12 externally and even so, no change was seen only when 3 and 4 are selected. Regards and thanks
 

Dagomoyac

Member
Joined
May 25, 2023
Messages
5
Location
Costa rica
Occupation
Electrónica
good to comment I already solved the problem it was not in the electrovalve it was between the coil and the connector there was a false contact when moving the cable I solved it by soldering said contact THANK YOU VERY MUCH FOR THE HELP AND THE DIAGRAM
 
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