MF tractor shuddering while driving

[Ciaran.Cassidy]

Hi folks, i have a massey ferguson 3075 4wd. I just done the clutch and 4 new tyres. Problem is ive shuddering/vibration while towing a trailer over run down hill and uphill under pressure. Any ideas what it is pls. Thanks
Ciaran

 

[Mark the shepherd]

Obvious question. But are the tyres the correct sizes, not just the numbers. Some manufacturers are known to be slightly off with their sizing! Another thing to check is the carrier bearing on the front wheel drive shaft. Good luck.

 

[Nukemall]

Are you sure the 4wd is disengaged? May be that light is off, but still in 4wd.

 

[Werzle]

Sure its not the trailer? i had a wooden floored 24ft marshal that would shake your fillings out empty for some reason

 

[box]

Put a video up for us if you can. Some tyres can cause horrendous shuddering on smaller tractors at certain speeds and loads.

 

[Courier]

What air pressure is in the tyres ?

 

[Ciaran.Cassidy]

Thank you v much for replies. I checked tyres. There's 16 in front and 20 in back. I replaced front coupler and carrier bearing. Also I tried different trailers from neighbours etc to try find problem. Really frustrating. Cause worried it will cause long term harm. Trying to upload video

 

[feilding]

Thank you v much for replies. I checked tyres. There's 16 in front and 20 in back. I replaced front coupler and carrier bearing. Also I tried different trailers from neighbours etc to try find problem. Really frustrating. Cause worried it will cause long term harm. Trying to upload video

The front tyres are way too low in pressure. fronts need to be 4psi higher in front than the back, so if you run the backs at 20 psi the fronts need to be at 24psi.

 

[Ciaran.Cassidy]

Thank you ill give it a try

 

[startinghandle]

Could there be fault with tyres? When new car tyres are fitted any vibration is cured by having wheels balanced .did you fit tyres yourself ?
Is new clutch working ok?

 

[Norfolk Olly]

And the award for ”longest thread title” goes to

 

[Farmer_Joe]

Are you sure the 4wd is disengaged? May be that light is off, but still in 4wd.

I Rekon he’s nailed it

 

[Exfarmer]

Seem to remember on some case models if bulb was blown, the 4wd stayed on

 

[essexpete]

Easy to check the 4wd. Low speed full lock and flick the 4wd switch on and then after a few seconds off. You will see /feel the wind up with the front wheels.
New budget tyres on my tractors and at about 5 or 6 mph on hard surface there is vibration. Funnily enough down hill as well. To be fair the old Pirelli tyres did similar.

 

[snipe]

The front tyres are way too low in pressure. fronts need to be 4psi higher in front than the back, so if you run the backs at 20 psi the fronts need to be at 24psi.

Not sure I follow that. How have you worked that out?? You don’t know what size the tyres are or what weight they are carrying

 

[feilding]

Not sure I follow that. How have you worked that out?? You don’t know what size the tyres are or what weight they are carrying

When I used to run MF tractors ,3060,3065,3070,3075,3085, they all used to jump and buck on the road. A engineer from MF, not the dealer . Told me to always have the front pressure 4psi higher than rear , it cured the problem straight away. I still do it today on my Deutz, done on other makes as well.