They say you can never have to much of a good thing but i was reminded yesturday as i took the new to me campers drum off that, that expression may be flawed. Someone put the caps on that have a zert fitting for a grease gun and obviously went to town on it because there was grease packed into the drum and all over the pads and everything. That may be somthing you wanna keep and eye on if you have these type of caps. Its a good thing i dont have a break controller yet because them breaks were not goinf to do anything with all the grease in there haha. I have a 94 coleman pioneer by the way.