Massey Ferguson 6160 dynashift issue

[Gabriel]

Hello community! I have an old tractor Massey Ferguson 6160 model 1998 which was working fine but out of a sudden Dynashift stopped working properly. It goes fine in A and D but tractor seems to ignore B and C although corresponding light is showing in dashboard. I saw a few solenoids beneath the cab , 5 of them but actually I do not know which one is for B and C, I suspect there might be a stuck solenoid or something? Any ideas what might cause this issue? Also I would appreciate if anybody can specify which solenoid is for B and C ranges, thank you.

 

[MF CI]

Hello community! I have an old tractor Massey Ferguson 6160 model 1998 which was working fine but out of a sudden Dynashift stopped working properly. It goes fine in A and D but tractor seems to ignore B and C although corresponding light is showing in dashboard. I saw a few solenoids beneath the cab , 5 of them but actually I do not know which one is for B and C, I suspect there might be a stuck solenoid or something? Any ideas what might cause this issue? Also I would appreciate if anybody can specify which solenoid is for B and C ranges, thank you.

Nothing to do with the 5 solenoids in a row. Front right hand side of gearbox is a valve block, may have a tin plate covering the rear part of it the 2 solenoids for dynashift are there. One is not working or the wire has fallen off.

 

[Gabriel]

Thanks for fast reply, do you have any screenshots to indicate precisely where are those 2 solenoids? to be honest I do not remember seeing them before.

 

[MF CI]

Thanks for fast reply, do you have any screenshots to indicate precisely where are those 2 solenoids? to be honest I do not remember seeing them before.

Have you found them yet.

 

[Bumble Bee]

We worth having a look at the wires coming out of the Autotronic box under the right hand side of the cab.
Was always my first go to point and usually didn't disappoint.

 

[Gabriel]

I haven't found them yet but to be honest I've ran into bigger problems. It was a storm out here and tractor was outside of any cover and unfortunately my father started the tractor after a while and probably there was still some water near the autotronic box which caused more harm to the tractor, so now we are looking into fixing that before doing anything else, it might even fix all our problems if we get that autotronic fixed. I'm still interested in knowing where are those 2 solenoids if you have a picture or something.

 

[Gabriel]

Hello, I have come with an update. After doing some testing around the autotronic I figured out that when the supply wires are not connected to the autotronic then the voltage for the supply wires ( yellow ) is 12V but, when I connect to the autotronic the voltage drops drastically to 1-2V. Could anybody tell why is that happening?

 

[Bumble Bee]

Hello, I have come with an update. After doing some testing around the autotronic I figured out that when the supply wires are not connected to the autotronic then the voltage for the supply wires ( yellow ) is 12V but, when I connect to the autotronic the voltage drops drastically to 1-2V. Could anybody tell why is that happening?

Those 2 yellow wires will have a soldered joint. It is probably corroded and about to separate.

 

[Gabriel]

Those 2 yellow wires will have a soldered joint. It is probably corroded and about to separate.

That is right, the soldered joint looks corroded but since I have right voltage before connecting to autotronic I thought it would not matter the state of the joint. So you suggest to replace the joint?

 

[Bumble Bee]

That is right, the soldered joint looks corroded but since I have right voltage before connecting to autotronic I thought it would not matter the state of the joint. So you suggest to replace the joint?

Yes definitely.

 

[MF CI]

That is right, the soldered joint looks corroded but since I have right voltage before connecting to autotronic I thought it would not matter the state of the joint. So you suggest to replace the joint?

How and where are you checking the voltage when all the plugs are connected?
EDIT. If you have problems on the yellow supply wire you must have more problems than just some of the dynashift not working. What exactly is working and what isn't?

 

[Gabriel]

Yes definitely.

Thank you, that actually did the fix. MF CI to answer to your question, first it was a problem with B and C gears ( tractor couldn't shift into those gears ) , but after a rough storm out here everything related to Autotronic was not working, so Bumble Bee's answer lead to identifying and fixing the root cause for almost everything. What is now STIL not working for some reason is the reverse shuttle ( and it worked before ) so will have to see if there is any voltage coming to the shuttle and if there is anything going out from it. If you guys have any tips where should I check first I'm all ears.

 

[Gabriel]

Update: after further investigation looks like the reverse lever is not working anymore, there is voltage coming out when it is in forward position but for the reverse nothing comes out of the wire. Thanks everyone for help.