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Titan Brake Actuator - Surge Brake Actuator - T4839100 Review

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Review of Titan Brake Actuator T4839100

Today we're going to be taking a look at a Swing-Away Actuator. Now, this is a space-saving, swing-away design, so that the actuator actually swings back, which is going to create a shorter tongue for storage. The foldaway portion can swing either right or left, so you have our pivot bolt right here, and then you have the pin that would be removed. I do want to mention that the pivot bolt can be installed on either side, so it can swing either right or left. Once you remove that pin, basically what you can do is you can take the coupler, or the actuator, and you can rotate it and it brings it down to this, so it allows for a nice space-saving design. It's going to be a perfect solution for convenient storage of your trailer, especially in maybe a smaller, shorter garage, or shorter space. Now, the hydrolic actuator is designed to synchronize the trailer brakes with your tow vehicle brakes. It does come with the manual reverse lock out, so it's going to come with this easy-to-use break lock out bracket.

This actuator includes an electronic solenoid to control the hydrolic break pressure, so you'll only need to use this bracket when not connected to the tow vehicle's 12-volt DC backup light circuit. This is very easy to use. It installs in this area here. When in reverse, that prevents the solenoid from compressing, which is going to prevent your brakes from being engaged when backing up. The unit also comes with a break-away kit. That's this cable and hook.

This connects to your tow vehicle. In the event where your vehicle separates from the trailer, pull the cable, which would activate the trailer's brakes, bringing it to an eventual safe stop. It's a bolt-on installation. The unit is going to feature a steel construction with a zinc coating, so it's going to do a great job at resisting rust and corrosion. It also has a cap right here, so you remove that cap. Underneath that cap is going to be a plug.

You remove that plug and then you'll have access to the brake fluid reservoir. The connection point for the hydrolic line is right at the back of that solenoid. If you can see it in there, I know it's tight to see, but the connection point for the hydrolic line is located right there at the back of the solenoid. Again, manual and hardware is included. It's going to come with a total of six bolts and six lock nuts, three mounting points on top, three mounting points on the bottom. The unit's designed for a 2" hitch ball, it's going to offer a capacity of 7500 pounds, with a maximum towing weight capacity of 750 pounds. The way that you operate the coupler head here is you need to remove this pin.

It's got the thumb latch right here. You do that, lift up, it opens it up to accept a 2" ball. When you have the ball connected, just push this down and then place your pin back through, and it's going to secure it on there. Now, underneath the coupler head is a tab that can be pushed. Right here, there's an indicator that says, Before Towing, push up on the tab under the actuator to assure that the brakes are released. You want to do that every time before you tow, just to make sure your brakes are released. This is designed to work with a 3" by 5" ride channel tongue. If you have a 3" by 3" tongue, or a 3" by 4" tongue, you will need to use an adapter spacer kit, which is sold separately and available here at I took a measurement of the overall length from very edge to very edge and got about 28-3/4 of an inch, from the center of the pivot bolt to the front measured about 23-1/2, from the center of the pivot bolt to the back measured about 5-1/2 inches. That's going to do it for today's look at the Swing-Away Actuator.

Questions and Comments about this Video

Matt V.

I have a Shoreliner SRV 31b trailer with the folding tongue and the actuator can be removed. Do you sell the actuator by itself?

Etrailer Expert
Reply from David B.

Hey Matt, can you give me a part number on the actuator? These items are not standard like parts on a car/truck. Once I get the part number I can find you the best replacement. I'll link you to our page of actuators so you can look too. If you have any more questions I'll be here to help.

Jeff L.

I have this actuator on an old Zieman trailer. I don't need to replace the whole thing, but it's really hard to get the coupler to release the ball. Do you know of any tricks or if there are replacement parts for the coupler?

Etrailer Expert
Reply from Chris R.

I don't really know of any good tricks other than making sure you're completely lined up straight and level when releasing the ball - sometimes a slight angle can really cause some frustration. With the coupler released, I would also just inspect the mechanism and clean/lubricate all the moving parts. If you've had it for a while there may just be some corrosion or debris getting in the way and leading to issues.

Blake M.

What is the distance between the swing away pivot bolt and the pin center hole to center hole? The Mastercraft trailers is 4. Would be nice if it were just a swap out.

Etrailer Expert
Reply from Chris R.

This particular swing-away actuator is actually no longer being made by Titan. In case you're able to find it elsewhere though, the dimension you're looking for on this unit is 5-1/2".

Reply from Jeff L.

Thanks @ChrisR

Etrailer Expert
Reply from Chris R.

@JeffL No problem!

Reply from Thomas S.

@ChrisR where can I get a replacement now that Titian no longer makes this? I need to replace mine on my 2010 MasterCraft X45 tandem axle with disk brakes.

Etrailer Expert
Reply from Jon G.

@ThomasS We don't have any exact replacements but we have some that match some of the specs of the discontinued Titan coupler T4839100. You can combine one of these with one of our hinge kits but you'll need to replace your trailer tongue as well. i've linked our couplers and our hinge kits for you to filter through.