NH BR 780

The baler is sometimes making a screeching/knocking sound. It doesnt do it all the time but is worse when a bale is in. So have checked all the bearing they seem good
EXCEPT for the drive belt roller one on the clutch side. It looks fine and starts fine but a temp reading of running only 10 minutes says 150F on the bearing.The other side of the roller bearing says 86F. So my question is it very complicated to pull all that off to get to the bearing? Do you need certain tools for the spring and clutch? Or is it pretty standard annoyance of getting to the part? Thanks

NH BR 780