Why Does Boat Trailer Lock Up Brakes when Backing Up

Updated 06/27/2016 | Published 06/25/2016

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Replacement Solenoid Valve for Dexter Brake Actuators with Reverse Lockouts

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Solenoid Shield for Dexter Model 60 Trailer Brake Actuators - Zinc

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Question:

On the Triton 21rx, can the brake actuator be adjusted? The brakes lock up in reverse.

asked by: Cary L

Expert Reply:

Sounds like you have a boat trailer that you tow your Triton 21RX with that has surge brakes that are locking up in reverse. This is a fairly common scenario that has an easy fix.

With surge brakes, you have a brake actuator applying the needed pressure to the brakes but to be able to back up you will need to have a manual lockout or an electric lockout solenoid, like # T4748800, which will close when you shift the vehicle into reverse, allowing the trailer to be backed up.

You may also need a solenoid cover like the Titan # T4835800183, depending on what brake actuator you currently have.

Feel free to send me a picture of your actuator and I can see which lock out solenoid you would need.

The other option is to switch to free-backing brake assemblies. But that also will depend on the size brakes your trailer requires. You would need to measure the brake assemblies you have and then check out the link I attached that has all of the free-backing plates we offer.

expert reply by: Jameson C