Dexter Electric Drum Trailer Brakes
Trailer Brakes are an essential part of any towing setup. Dexter offers many different electric drum brake assemblies, with weight capacities up to 12000 lbs and some are self-adjusting.
Dexter Hydraulic Drum Trailer Brakes
Dexter also has hydraulic drum brake assemblies for your towing needs. These also have weight capacities going up to 12000 lbs and Dexter has single servo, duo servo, and free backing brake options.
Dexter Trailer Hubs and Drums
Dexter is guaranteed to have a hub or a hub with an integrated drum that will fit your application. These are rated for all the way up to 10000 lbs axles and Dexter offers everything from standard to agricultural applications.
Dexter Trailer Suspension
To get the smoothest ride possible, Dexter has a trailer suspension kit for tandem-axle trailers, as well as a variety of equalizers and hangers to complete your trailer suspension set-up.
Dexter Brake Controllers
Dexter has a proportional controller, as well as electric to hydraulic brake controllers, to keep your trailer safe and within DOT standards and federal braking requirements.
Dexter Trailer Breakaway Kit
If you have one of the Dexter Electric to Hydraulic Brake Controllers, the Trailer Breakaway Kit is a must! If your trailer is disconnected while towing, this system will bring the trailer to a stop.

Dexter
Dexter Reviews and Installation Videos
Expert Answers about Dexter
Does Dexter Electric Brake Assembly Part 23-27 Include the Backing Plate and Magnet- On brake assembly part 23-27, everything picture is included. The backing plate, brake shoes, linkage, magnet arm and magnet. The same goes for the left hand side assembly, part # 23-26.
I have linked to a video below that shows these very assemblies being installed on a trailer.
view full answer...
Recommendations On Changing Out Hub Assemblies On A 4x4 Mini Trailer From 12 Inch Tires To Larger- I hope that things are going okay for you in Iraq and that you will be returning to the States soon.
You will need to see if you can have somebody pull the hubs off of your trailer because the best way to check which hubs will fit on your trailer axle is to pull the hubs off and get the inner bearing part number and outer bearing part number. With those part numbers we will be able to tell what the diameter size is on your axle.
In the 5 on 4-1/2 inch bolt pattern the difference in the hub
view full answer...
How to Determine the Size of a Trailer Hub Assembly for Replacement- To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose # 8-258-5UC1. If the inner bearings are marked L44643, you will need # 8-258BTUC1. If you do not have the old bearings, you need to measure the inner bearing surface on the spindle to determine if the 1.063 inch dimension or 1.00 inch dimension will be needed to accept the bearing. You can also
view full answer...
Availability of Electric Trailer Brake Assemblies for 1977 Show Me Horse Trailer with Kelsey Axles- Kelsey is related to Hayes/AL-KO. We do have assemblies that may possibly fit but you will need to measure the center to center distance between the 4 bolt pattern on the brake mounting flange. On our brake assemblies that may fit, # 23-105-09, and # 23-106-09, the mounting pattern for the 4 bolt holes is as follows:
Center to center on the lowest 2 holes is 2-1/2 inches
Center to center on the top 2 holes is 3-1/8 inches
Center to center between top and bottom holes is 3-3/8 inches
Thes
view full answer...
Rear Trailer Brakes are Weaker than Front Trailer Brakes on a 2007 Horse Trailer- Chances are that the smaller gauge wiring is not causing the problem especially since it is not so long as to offer much resistance. But, you can certainly try a larger gauge.
I would still check those grounds because a weak ground can cause all sorts of problems. Just make sure that they are attached to clean and corrosion free metal surfaces that are not painted. Having a short ground wire would be beneficial.
You can test to see how much voltage is getting to the magnets with a multimet
view full answer...
How to Remove Bearing Races on a Trailer Hub- The bearing races on a trailer hub, like the Trailer Hub Assembly, part # 8-258-5UC1, are removable, they are not built into the hub. I am including a link to a FAQ page on wheel bearings, races, and seals. Also, a link to a video of removing and reinstalling bearings, races, and seals. It will show, starting at the 2 minute and 5 second mark, how to remove a bearing race.
You might also try to rent from an auto parts store a bearing/race removal and installation tool, or you might see if the
view full answer...
Troubleshooting Brakes not Functioning after Adding Brakes on Tandem Axle Trailer- The first thing I would check would be the grounds of the brake assemblies on the side of the trailer that does not seem to be working properly. If the grounds are not making solid connections the brakes would not activate.
You should also check for voltage at every brake assembly. You would do this by having a buddy activate the override function of your brake controller while you use a circuit tester like # 3808 to see if there is voltage on the circuit.
As long as you used adequate gaug
view full answer...
Is the Dexter Electric Over Hydraulic Brake Actuator # K71-651 Legal for Use in Canada- I checked with my contact at Dexter and he informed me that the Dexter Electric Over Hydraulic Brake Actuator # K71-651 that you referenced is legal for use in Canada.
view full answer...
What Size are the Studs for the Trailer Hub and Drum Assembly # 42866UC3-EZ- The studs on the trailer hub and drum assembly # 42866UC3-EZ, are 1/2 inch-20. The assembly comes with lug nuts, bearings, grease seal, and a dust cap. The bolt pattern is 8 on 6-1/2.
If you needed the same hub and drum assembly but with the 9/16 inch studs, use # 8-219-13UC3.
view full answer...
Trailer Brake Troubleshooting on a 1999 Forest River 5th Wheel Trailer- I would start out by checking the wiring in the trailer connector on the 5th Wheel trailer, since you have eliminated the truck as the problem.
First, make sure that the ground wire from the trailer connector is attached to the trailer frame and no corrosion is impeding the ground connection.
Next, make sure that the trailer brake power wire is connected the the correct circuit that is powered when you activate the manual slide on your in cab brake controller.
Once you have power on the
view full answer...
What is the Overall Diameter of the Hub Assembly on Dexter Trailer Hub Assembly # 8-91-05UC1-EZ- I went out to the warehouse and took a measurement of the whole hub assembly on the Dexter EZ Lube Trailer Hub Assembly, part # 8-91-05UC1-EZ. The overall diameter of the whole hub assembly is 5.45 inches. I included a picture with the measurement listed.
view full answer...
How To Remove Broken Wheel Stud on the Dexter Trailer Hub & Drum Assembly # 8-174-5UC3- On the Dexter Trailer Hub & Drum Assembly, part # 8-174-5UC3, the wheel studs are a screw-in stud. The wheel stud would be the Trailer Hub Wheel Stud, part # 25-11. This is a 9/16 inch stud that has a total length of 3 inches.
view full answer...
Troubleshooting Brakes on Pop-Up Camper- For starters, I would recommend doing some troubleshooting.
Use a multimeter like part # BTMT15 and test the leads feeding the brake assembly magnets. Have a helper activate the manual braking switch on the controller, while you probe the wire. You should be getting approximately 12-volts at the brake magnet.
The Nev-R-Adjust brake assemblies are known to click, make sure that they are installed on the correct side of the trailer. The # 23-469 should be installed on the right (passenger) s
view full answer...
Troubleshooting Electric Over Hydraulic Braking System that Uses Dexter # K71-651 Actuator- A dead breakaway kit battery should not affect how the actuator works while it is receiving power from the tow vehicle. If the trailer should become completely detached from the tow vehicle, the actuator will not have the necessary power to safely bring the trailer to a stop. In order to avoid an expensive ticket if you are pulled over by the DOT, (or worse) I would urge you to replace that battery as soon as possible.
Having a poor ground connection can certainly inhibit the actuator from op
view full answer...
Will Dexter Trailer Hub and Drum Assembly # 84546UC3-EZ Fit Inside a 13 Inch Wheel- The Dexter Trailer Hub and Drum Assembly, part # 84546UC3-EZ, will fit inside a 13 inch wheel. The reason we do not list it as working is because the highest load range 13 inch tire is not rated higher than 3,500 lbs, so the weight capacity will be determined by the tire or the wheel and not the axle.
I am including a couple of links to FAQ pages on trailer tires and adding drum brakes to a trailer.
view full answer...
Which Spindle is Used for the # 8-231-9UC1-EZ Hub Assembly- The Hub Assembly you referenced, part # 8-231-9UC1-EZ uses the part # R50342EZ spindle. In addition to the bearings, races, seal and grease cap, the assembly includes 1/2 inch wheel studs with 1/2 inch cone wheel nuts.
Welding a spindle is a tricky business, it is very important that the spindle is perfectly square to the axle. You will want to use a certified welder who is experienced with installing spindles.
view full answer...
Power To Trailer Brake Magnets But Brakes Are Not Engaging- For the 2 wires coming off the brake magnet, either wire can be used for either ground or power. You will just want to make sure that the ground wire has a good connection to a clean, corrosion and paint-free location on the trailer frame. A bad ground connection could be causing your problems. You will want to check to make sure each brake assembly has a good ground connection.
If the brake assemblies are not new, you will want to inspect the magnets. If the magnets have windings or wear mar
view full answer...
Converting 3500 lb Axle from Idler Hubs to Electric Brakes- The brake mounting flanges, whether they be 4 or 5 bolt, have a standard hole spacing to fit their appropriate brake assembly. No worries about the brake assembly matching with the existing one on your axle. A 3500 lb axle like what you have will use a 4 bolt flange.
You will need to get the numbers that are stamped on your existing bearings, in order to confirm the fit of the # 84557UC3. Your current bearings will need to match the bearings of the replacement hub. The # 84557UC3 uses L68149
view full answer...
Recommendation of Electric Over Hydraulic Actuator For 6,000-Lb Tandem Axle Trailer with Disc Brakes- For an electric over hydraulic brake actuator for your 6,000-lb tandem axle boat trailer with disc brakes, I have the Dexter Electric Over Hydraulic Brake Actuator, part # K71-651, that you have referenced and the Carlisle HydraStar Electric-Hydraulic Actuator, part # HBA16.
They will both require a breakaway kit like the Dexter Breakaway Kit, part # 34-285, or the Carlisle Breakaway Kit, part # HBA-EBA. The breakaway kit is required to apply the trailer brakes should the trailer become disc
view full answer...
What Size Wheel Pilot Hole Will Fit Dexter Trailer Hub and Drum # 8-201-5UC3-EZ- In addition to making sure the pilot hole of your wheel is large enough you will also need to measure the bolt pattern of your wheel (see FAQ and video).
The bolt pattern of the Dexter Trailer Hub and Drum # 8-201-5UC3-EZ is 6 on 5-1/2.
I contacted our representative at Dexter about the Dexter Trailer Hub and Drum # 8-201-5UC3-EZ. He informed me that the pilot hole on your wheel will need to be 2.6 inches or larger.
If your trailer hub uses lug nuts, the pilot hole diameter can be larg
view full answer...
What Size Wheel Center Pilot Hole Will Fit the Trailer Hub and Drum Assembly # 84546UC3- I went out to the warehouse to measure the outside diameter of the center of the hub # 84546UC3. I used a set of digital dial calipers to take the measurement and came up with 2.6 inches in diameter at the widest point. The pilot hole on your trailer wheel would need to be 2,6 inches (or larger if the wheel is centered on the hub using lug nuts).
view full answer...
What is the Difference Between Dexter Trailer Brake Assemblies # 23-105-09 and # 23-105- The difference is the mounting pattern. The Dexter # 23-105-09, brake assembly that you have referenced will mount to either an AL-KO/Hayes 4 bolt or a standard 5 bolt mounting flange.
The # 23-105 just fits the standard 5 bolt pattern. Otherwise the specs are the same:
12 inch by 2 inch
6,000 pound axles
Manual adjust
Left hand side
view full answer...
Activating Electric Over Hydraulic Trailer Brakes using Integrated Brake Controller on 2010 GMC 3500- There are two options to activate the electric over hydraulic brakes on your trailer when towing with your 2010 GMC 3500 truck. The first, as you mentioned, would be to use an adapter, which also requires some additional parts. The second option would be to install an aftermarket brake controller which is compatible with electric over hydraulic brakes.
If you decide to go with an adapter, you will first need is the Titan BrakeRite SD Adapter, part # T4845900. In addition to using the adapter,
view full answer...
What Size Wire Should be Used for Trailer Brake Wiring on a 28 Foot Enclosed Cargo Trailer- We recommend using 10 gauge wire, # 10-2-1 for wiring trailer brakes on your 28 foot tandem axle trailer. I would also recommend using solder, # FL0803484, and a soldering iron, # BTSI30, to splice any wires for trouble free operation of the trailer braking system. Cover all connections with electrical tape, # BT66. I have added a drawing I put together to show you how trailer brakes are normally wired on a tandem axle trailer, along with a video on trailer brake wiring and installation.
You
view full answer...
How Do Electric Trailer Brake Assemblies Get Wired to a Trailer- When installing electric trailer brakes you will only need to run wire from the brake output circuit of your trailer connector to the brake assemblies. You will not need to install any other electric devices to complete the wiring.
You will also need to know which size brake assemblies you have and order the correct size, if you are unsure which size you have you will need to measure the diameter of the inside of the drum to know which size you need.
You will also need to install an electr
view full answer...
Replacement Studs for a Trailer Hub and Drum Assembly # 42866UC3-EZ- The replacement wheel stud you would need for your Trailer Hub & Drum Assembly # 42866UC3-EZ would be a Wheel Stud # 165995.
Also, when you install the wheels onto your hubs you will want to torque them down to spec and then after 50-100 miles you will want to re-tighten them to the specified torque rating to prevent having the studs break in the future.
view full answer...
Can a Gooseneck Horse Trailer Be Raised to Avoid Making Contact with 1997 Dodge Ram 2500- I have a couple of possible solutions for you. First, though, you should check to make sure all of the suspension components are in good working order and replace any damaged or worn parts.
If the axle on the trailer is a 3 inch round axle and the spring seats are currently mounted to the bottom of the axle, using the Dexter Over-Under conversion kit, # K71-385-00, that you have referenced will provide a few more inches of height. But this will also change the center of gravity of the traile
view full answer...
Are Lug Nuts Included with the Dexter Trailer Hub Assembly, # 34822BX- The Trailer Hub Assembly, # 34822BX, does come with lug nuts in addition to the bearings, races, and seal.
view full answer...
How Much Will the Dexter Trailer Springs Over-Under Conversion Kit, # K71-385-00 Raise the Trailer- First, you would need to have the spring seats welded to the top of the axle. You cannot flip the axle because then the existing spring seats would be bent the wrong way. What you can do is measure from where the springs are attached to the spring seat now up to the top of the axle to determine the approximate amount it will raise the trailer when using the Dexter Trailer Springs Over-Under Conversion Kit, # K71-385-00.
To use this kit you will need to have a 3 inch diameter axle. When liftin
view full answer...
Can EZ-Lube Hub and Drums be Used on Non-EZ-Lube Spindles- This Trailer Hub & Drum Assembly # 84546UC3-EZ will work on your non-ez lube spindles. The only difference between the ez lube hub and drums and the non-ez-lube hub and drums is the grease cap. The ez lube ones like the # 84546UC3-EZ have a remove-able rubber seal on the cap that allows you to access the grease fitting of the ez-lube spindles.
The # 84546UC3-EZ will work for you regardless if you have EZ-lube spindles or not. I also attached a video on trailer brake installation for you to ch
view full answer...