Hi All,

First real ask post.

I have a 2018 GD Imagine 2600RB with around 14k logged. Still have the OEM Westlakes with no signs of deterioration. We have not had any significant issues with the RV to date.

On last trip at a routine rest area stop, I checked the tire temp and hub temps with my infrared gun and noticed that one hub was running cold (~90 F) and one was significantly warmer than the other two (~125 F vs 110 F). This remained consistent for the remainder of the trip. While homeward bound, my Toyota Tundra alerted that the trailer had disconnected. At the next stop, was able to confirm that the lights all worked but the electric brakes did not. Limped home. Threw the trailer up on jack stands and found two of the 3M wiring connectors had a broken wire which explains the sudden loss of brakes and the alert. I pulled the hubs and found grease leaking past the seals on all four wheels but it had only fouled one set of shoes significantly. Further investigation showed that I have 2017 Lippert axles which could explain the early leakage.

I ordered new Dexter hub assemblies and upgrading to the self adjusting mechanism. Eastern Marine had them for $66 ea, which is the cheapest I could find. Full clean and inspection found one inner bearing race with 0.0008 clearance to the hub instead of an interference fit. I removed the race and reassembled with Loctite bearing mount. Cleaned and repacked the bearings with Lucas Red N Tacky and installed new Dexter triple lip, marine seals. They are rubber coated on the outer portion of the seal which is supposed to seal better. NAPA turned all of the existing drum surfaces, including the magnetic face. During installation, I replaced all of the existing wiring connections with new 3M connectors at each of the hubs (same as OEM). I manually adjusted the shoes and then tested the brakes while on the jack stands. What I found while testing manually was that one brake assembly grabbed much tighter than the others, two were the same and one did almost nothing. I pulled that hub, applied the E-brakes and confirmed that the magnet was working by sticking a wrench to it. I did not test the resistance of each hub's magnet before installing but should have in retrospect. I did measure the assembled résistance of the trailer brakes as 0.9 Ohms, which is correct for four parallel 3.2 Ohm magnets.

At this point, I feel there is either an electrical issue causing a voltage drop for some of the brakes or I have a bad magnet. My question is...

Has anyone else had a similar issue? What did you find? How did you resolve?

Thanks in advance for any help or guidance provided.