New Holland T6070 4wd Bearing/Driveline Noise
I have a 2010 New Holland T6070 40K Electroshift. The problem is that in the top two gears of 15 and 16 there is a very loud hum from what seems to me to be the 4WD driveline. I don’t think it’s gearbox related as I don’t have this sound in gears 11 and 12. The sound is continuous and appears from about 2,000 rpm to almost full revs. The sound seems to turn off for the most part when it is at full speed at 40 km. For me it is related to the speed and the transmission of the 4WD, and I say this because if the 4WD is engaged in gears 15 and 16 I no longer have this sound at any speed. I also noticed that the old guy has hit a grease nipple on the large cast trunion that is supporting the 4WD axle bearings.Added to this when I use the brakes I always get a big “thud” about 2 seconds later disengaging the pedal. I assume this is the 4WD disconnect. I would appreciate any input from the guys at NH / Case or anyone with prior experience with a similar problem. What kind of repairs or repairs can I do here? I have taken a brief look below and have not detected anything strange. I will look in more detail at the weekend. The problem seems to be more prevalent when the RPM is increased, when I decrease the throttle the noise seems to decrease. Is this a sign of a tired bearing / clutch loading / unloading with different forces?
Propeller shaft bearing fails on T60s. It can’t be greased, and it’s a pretty major repair that requires a lot of expensive upgraded parts. I suggested to the dealer that it was brazen on NH’s part to charge so much for parts that they were frankly an admission of a design flaw, that is, NH should supply them at cost rather than profit from its own shit while “giving it the right.” back “to your customers. If you hear a “knock” when the 4WD engages / disengages when braking, take a look at it with a blowtorch before it fails completely.