Pulsating trailer surge brakes after pulling out from water

[Chris51280]

I noticed that after I take the trailer out of the water after I put the boat back on that when I step on the brakes that they hop/pulsars. They are fine when dry. Anybody wlse have the same problem with hydraulic surge brakes with drum setup?

 

[Grub54891]

It's because they are wet. They try to grab, and slip, let go, grab and so on. The hitch slides in to apply the brakes, they grab a bit, and then the hitch moves forward, releasing the brakes. Once dry they grab smoothly. Even your car likes dry brakes, if you drive in high water they don't grab well.

 

[Lowlysubaruguy]

Have the hubs or drums removed make sure the shoes are not covered in grease or brake fluid from a leak. Sand deglaze the drums and shoes and have them adjusted at the same time.

 

[Chris51280]

thanks. just wondered if others have the same problem. I got new brake cylinders and actuator put on last summer since it wasn't working at all. It looked ok but will check again after it gets warmer.