Mf 7480 vario fault

[masseyman74]

Hi all, I have a massey 7480 tier 2 with about 6700 hours on the clock. I have an issue with the vario jumping into neutral when you go down hill. When it faults I have the hare and tortoise light flashing between the to. I have had someone come out and have a look at it. They think it might be the fork selector in the box. Has anyone else experienced this before? Any help or advice will be greatly appreciated.

 

[mf7480]

I’m sure there’s something where dirt builds up around the external actuator fork, we had it on ours but it was 10 years ago now so don’t clearly remember

 

[masseyman74]

Thank you for your reply, did yours go in to neutral when going down hill? Also I think it’s done it when the mechanic drove it in pedal mode and stopped quickly.

 

[Southmec32]

Had this in a few and it the synco in trans popping out under load.

 

[Bumble Bee]

There is a small cover on the LH side of the gearbox at the end of the Hare/Tortoise selector cable. Dirt can build up under this.
Also on the RH side of the gearbox by the stepper motor at the other end of the cable there is a pivot where it can be manually controlled. This can sometimes seize up.