![]() ![]() ![]() The plug is just that, a plug that goes in your master cylinder reservoir and accomplishes the same results. ![]() it is also suggested to use even with the reversing solenoid when backing over soft ground or up an incline without the brakes fully engaging. The purpose of a lock out key is to fit behind the front sliding roll pin to "lock it out" from sliding back and engaging your brakes while reversing. If you've ever tried to back your trailer up without having the plug in your rig then you know what I'm talking about. If you don't have one of these little buggers then you will have to use a lock out key or plug. Now this little guy is the best thing invented since sliced bread, this is the electronic reversing solenoid, Its sole purpose is to allow you to back up without the brakes locking up. Once the pins are pulled you can pull on the hitch receiver mount to separate the inner member from the neck, exposing the internal workings such as the shock absorber, master cylinder and such. Once the snap rings are removed you need to pull both roll pins out. So with all that being said its time to get dirty! Before you begin you will need a pair of snap ring (circlips) pliers, without them you will not be able to even start this job.įirst order of business is to remove the two snap rings (circlips) from both pins. The breakaway system must be reset manually after it has been activated. Note: The breakaway system is not intended to lock up the trailer brakes after tow vehicle separation but rather to apply just enough braking force to keep the trailer from free-wheeling down the road. At this time the breakaway cable is pulled which will apply a braking force to the trailer. Before the breakaway cable is pulled, the coupler must become detached from the hitch ball and then the safety chains must fail. The breakaway cable is the third line of defense after trailer separation. The shock absorber makes sure the brakes are applied and released smoothly.Īll actuators must have a way to apply the trailer brakes should the trailer become completely detached from the towing vehicle. The piston moves into the master cylinder, building pressure to apply the trailer brakes. The actuator slides over the coupler, applying force to the master cylinder piston in direct proportion to how fast the tow vehicle is slowing and how much the trailer weighs. When the tow vehicle slows down, the trailer moves toward the tow vehicle. The shock absorber controls random application of the trailer brakes when towing on rough roads. The coupler slides into the actuator applying force to a piston inside of a master cylinder, which applies the trailer brake.At constant speed, the brake actuator master cylinder piston is in the free (extended) position and the trailer brakes are not applied. When the tow vehicle brakes are applied, the “surge” or “push” of the trailer toward the tow vehicle automatically applies and synchronizes the trailer brakes with the tow vehicle brakes. The hitch is actually a pretty simple system. Trailer braking is controlled by the actuator mounted on the tongue of the trailer. As you can see this particular cable kit I bought covers multiple models Google that and all your replacement parts will come up. UFP is the make and my particular hitch is model A-84. If you're not sure, they will be labeled just like this. You can buy just the cable for around $13 but the catch is its almost $10 for shipping so I just hit up my local boat shop and bought a kit for under $30 which comes with a new cable, clip, and attachment plate. Now, I can only assume most of us are running some type of UFP hitch on our trailers. Luckily through the power of the internet it actually was a very cheap learning experience. ![]() Second, I questioned how much money my self inflicting wound just cost me. Now the way my mind works is a two part process, first, it was a string of curse words that if heard out load would make a sailor blush. Yup, I forgot to disconnect the boat trailer emergency brake cable! I walk to the back to see this still hanging from my hitch. I pull up to the house, disconnected the boat from my truck and go to pull away, I hear a clunk and feel a small jerk. So the other night we got home late from the lake after being out pretty much all day, the sun was already down and I was beat. ![]()
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