I think the problem he is trying to adress it the hydraulic swivel on his gear drive f-2's variable speed, the swivel connector that feeds oil to the hydraulic cylinder that adjusts the drive belt. hunter, I think what you are refering to is the brushholder that is part of the header clutch. l's and m's didn't have the same hydraulic swivel as a F2, they just had a ram that adjusted a yoke to move the outer sheave. this is similar to a F , but not an F2 We have experienced similar issues, and according to our parts book, there is a seal kit available, as well as the two sealed bearings. although it doesn't look like it, this swivel is actually serviceable. Good luck on getting the F2 to the field! they are great combines, and it is good to see them in the field.