I finally started the repair of the RV Gate Casters.
The left side caster is tilted and looks like it will break off soon. As you can see the casters are held on with short pieces of 2 by 6 which are then screwed with lag screws into the bottom 2 by 4 of the gate. On the left side the 2 by 4 is twisting under the load of the caster.
The fix I’ll try is to use a long 2×6 rather than a short piece and extend the 2×6 under the the vertical piece at the center to prevent twisting. I’ll bolt the long 2×6 to the 2×4 so their held tightly together to stiffen them. I had some used treated 2 by 6 left over from tearing off a partially rotted deck.
The hardware is all stainless since I live on the coast of Oregon. Also the 3/8″ bolt heads holding the casters on are recessed and covered with silicon to slow down the rot of the 2 x 6 since the recess goes through the treatment.
The bolts all have small washers under the heads and large washers under the nylon lock nuts. Looks like that is working. The caster is held straight under the weight of the gate. No twist. I’ll fix the right side another day.
Update – Fix the other side of the gate
I finished the gate repair. Here are pictures of the process.