Massey Ferguson 3635 Project

SuperTwo

Member
New pick up hitch fitted.
IMG_20210818_205119.jpg
 

SuperTwo

Member
I'm having 4wd trouble again. The light on the dash is working correctly and I'm getting power momentarily into the Autotronic box when I press the 4wd button but there is no power out to the solenoid. Im guessing that this is how it supposed to work to send a signal and then Autotronic box takes over. I'm I correct in thinking that the Autotronic is at fault?
 

towbar

Member
Location
Louth, Ireland
Also when you say light works on dash it turns on and off ? On the press of the button? If it’s autronic you could bypass with separate switch or I’ve heard that a Massey tech with laptop could reassign the 4wd output to a different pin on the autotronic.
 

SuperTwo

Member
Dynashift is working and other the Autotronic functions appear to be working ok. It's stuck in 4wd as there's no power going from the Autotronic to the solenoid. The 4wd light will go off on the dash when the brake pedal and the 4wd button are pressed after starting.
 

towbar

Member
Location
Louth, Ireland
Does sound like autotronic output is blown. Did you check the voltage with solenoid connected or disconnected. I suggest testing with it disconnected. Also then wire a 12v to the solenoid and make sure it’s working- maybe use a fuse just in case solenoid is shorting. If all that works either a permanent bypass or see if the auto can be reprogrammed. I’ve only heard of that second hand so not absolutely sure about it.
 

SuperTwo

Member
Back again, today I noticed when ticking over in either A or B on the Dynashift and I engage the pto the engine revs start to drop and the pressure warning light will come on. It seems to be ok in C & D. Im guessing this means I've an internal oil leak somewhere. Where should I look first?
 

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