phatdaddy
God
Oteps mentioned a flush system for his brakes on his trailer. This is one I built to rinse off my wheels and hubs. Don't know why you couldn't adapt it to brakes. I always thought more damaged when you dunk your trailer and then leave it in a hot parking lot for 8 hours. This one doesn't require you to stay and wash and has no pumps or battery hook up.
it uses the pressure tank to push the water in the 4" PVC through some mist heads on flex tubing. You charge the system when you leave the house. After launching and parking, I just go back to trailer and open ball valve by wheels and walk away. Runs for about 4 minutes
When I get back to house, I just open both valves and hook garden hose up. It rinses the trailer while I flush the engine.
Pressure Tank and storage tank
Right side with ball valve to turn on
left side
it uses the pressure tank to push the water in the 4" PVC through some mist heads on flex tubing. You charge the system when you leave the house. After launching and parking, I just go back to trailer and open ball valve by wheels and walk away. Runs for about 4 minutes
When I get back to house, I just open both valves and hook garden hose up. It rinses the trailer while I flush the engine.

Pressure Tank and storage tank

Right side with ball valve to turn on

left side