Helpful tips

Can you backup a trailer with surge brakes?

Can you backup a trailer with surge brakes?

Yes, there is a way to back up your boat trailer and keep the surge brake actuator, # T43397007K, from applying pressure to the trailer brakes. You will need an electric lockout solenoid, # T4748800, which will close when you shift the vehicle into reverse, allowing the trailer to be backed.

How do you check trailer surge brakes?

Checking the brakes can be done in two ways. The easiest way is to raise one side of the trailer and spin the wheels while someone applies the surge brakes at the coupler.

How do you back up with surge brakes?

A trailer with surge brakes needs a special pin to be backed up. The pin is placed in the neck so putting the trailer in reverse does not activate the surge brakes while a driver is backing up or a trailer dolly is guiding the trailer with surge brakes. The pin can be removed when the trailer is ready to travel again.

What is a surge brake coupler?

Surge Couplers store brake fluid in a compartment which a master cylinder pushes through the brake line when stopping pressure is applied on the lever inside the coupler. Backing up would put pressure on the lever and would simulate a braking situation – causing the brakes to lock up when you’re trying to back up.

How do you test a trailer brake solenoid?

Connect the wire from the solenoid valve to the reverse light wire of the tow vehicle. Engage parking brake. With engine off and ignition on, check for proper solenoid operation by placing gear shift in reverse. Backup lights should turn on and an audible click should be heard in the solenoid.

How do you troubleshoot a surge brake trailer?


  1. First, do a test to see what’s going on. Find the breakaway chain or cable & pull it until it latches in the locked position.
  2. Jack up all the tires & wheels that have brakes.
  3. If the brakes work on even one wheel, it would indicate the master cylinder & orifice are okay.

How do you test a brake actuator?

The first test to try is to connect the white wire to the negative post of the battery. Then connect the black wire to the positive post on the battery. The unit may click but should not run. If it does run, it is a bad unit and needs to be replaced.

Can you disconnect surge brakes?

If you want to deactivate the hydraulic brakes on your boat trailer, you can certainly do so. The simplest way to do this would be to drain the brake fluid from the lines by disconnecting the brake lines from the wheel cylinders and allowing the fluid to drain. You can simply leave the brake assemblies in place.

What is better surge brakes or electric brakes?

Electric Brakes provide additional ease of use and additional braking control. Electric brakes are more simple than surge brakes, but they require a brake controller in the cabin of the tow vehicle.

How does a trailer surge brake work?

In contrast, Surge Brakes are hydraulic and use the trailer’s natural momentum to actuate the brakes. When you step on the brake in your tow vehicle and slow down, the trailer pushes against the hitch and presses a hydraulic cylinder. The more you slow down the vehicle, the more pressure on the trailer brakes.

What is a surge brake actuator?

Surge Brake Actuator systems work by the “surge” or “push” of the trailer toward the tow vehicle during deceleration which automatically synchronizes the trailer brakes with the tow vehicle brakes.