Should TT Brakes Lock Up

Cecilt wrote:
Dropped trailer off at dealer yesterday. They said shoes and magnets were fine. Tested electrical and discovered rear axle brakes working fine but the front was not. Found a broken wire. No juice was getting to the brakes on front axle.

My question is even in this scenario shouldn't the rear axle lock up when I had the gain set to 10? It never did. Maybe the 9500 lb TT was too much for just one axle to lock up but I wanted to ask before picking it up tomorrow. tks

Probably not.
Having placed over a dozen flatbed trailers with 5200/6000/7000/8000/10k lb axles in commercial service.....and owning three different rv trailers the first thing I do before hitting the road is replace all crimp connectors. Especially those clamshell types. And much depends on the brake controller.
I stip about 1" of insulation off.....then twist the wires together....then solder the joint....then wrap the area with electricians tape..... them heat the shrink wrap tube I slide on the wire after cutting the crimp connectors off.
This makes a good water tight seal eliminates low amp problems now or 200k-400k miles down the road..

Every trailer I've ever owned and currently own will slide the tires at speed when fully loaded after R&R brake wiring.

From Dexter axle group ;;
Mr. xxx,
While the 5.2, 6 & 7K brakes are all 12x2 in size they do have different lining material, magnets and reinforcement of the metal backing plates. Thanks ......Jim Miller / Dexter Axle