The leveling jacks on our camper have made an obnoxious “popping” noise (along with movement) since day one! We have a 2015 Grand Design Momentum 385TH that we bought back in March of last year. Apparently the “level-up” automatic hydraulic leveling system by Lippert is known for “popping”. So much so that Lippert even put out a bulletin of sorts suggesting the replacement/addition of one quart of “fork oil” or the CAT brand hydraulic oil additive. We’ve known about this for a while now, we just haven’t really made an effort to find this stuff… Until the other day. We found a CAT store in Oklahoma City and went to pick up a quart of this miracle liquid. It wasn’t cheap! $32 for a quart!
We ran the jacks up and down a few times to get it all mixed in to the system and since then we’ve had nothing but silent jacks! No more getting out of bed at 3am and hearing, and feeling, a huge POP!