A friend has a JD6800 that he was using on a round baler. All of a sudden when turning right the left front wheel would lock up and then let go. This continued. When driven straight it was OK. Oil levels were checked for metal and all OK. The tractor was jacked up. The bearings felt good with no noise when steering straight or on turning. Universal joint looked good. No oil leaks. The hub pivot bearings seemed tight with no play. We are at a loss where to look next. Could the bush that is located in the front end housing have picked up on the axle? If anyone has any suggestions they would be appreciated. Thanks.
Had a further look at the front hubs locking. One hub was low on oil the other hub shows some metal on plug but not excessive. When you drive all OK for a while until you go at a wlk and you hear a clunk in the hub. You can also hear it. It has been suggested a tooth missing in the drop down box on the transmission could cause this. In process of checking that oil.
Yes we jacked up front end and turned the wheels with no noises. We cleaned out hubs, front diff and transmission and refilled with fresh oil. Found only a very small amount of sediment in diff and 1 hub. On trying the tractor again the noise has vanished. Wondering if the low oil in 1 hub and tyre bind when turning may have caused the noise. ie. the different tyre speeds on cornering will cause one wheel to bind then let go. Baffling. Tractor is being used again but I have not received a report on if it is OK. Thanks.