Parts Needed To Add Surge-Type Actuator And Brake Lines To Tandem trailer With Disc Brakes
Updated 03/22/2020 | Published 02/21/2014 >
Products Featured in This Question
Question:
Please direct me to a fluid distribution block which attaches to the four brake lines to the disc brake calipers. How do I order the brake lines? It appears that there is only one outlet on the coupler correct?
asked by: Harry C
Expert Reply:
You are correct that there is only one fluid outlet on the coupler, part # T4750800 you referenced. This is the master cylinder on the coupler that sends fluid through the brake lines to the brakes. I have attached a photo of the coupler that shows the attach point for the brake line, and also a drawing that shows how the lines on a typical tandem axle trailer are run.
For a tandem axle with 4 disc brakes I recommend the Demco Hydraulic Brake Line Kit, part # DM5425. This kit includes the lines, hoses, and hardware needed to run the brake lines from the master cylinder to the brakes on your trailer. Since the kit comes with 4 flexible hoses you may wish to add an additional flex hose at the coupler, like part # T0776500.
I have attached a helpful article that shows what is needed to add hydraulic disc brakes.
Product Page this Question was Asked From
Dexter Zinc-Plated Brake Actuator - Disc - 2-5/16" Ball - Bolt On - 12,500 lbs
- Brake Actuator
- Surge Brake Actuator
- Farm Trailer
- Boat Trailer
- Construction Trailer
- Travel Trailer
- Utility Trailer
- Bolt-On
- 12500 lbs GTW
- 2-5/16 Inch Ball Coupler
- 3 Inch Channel Tongue
- Disc Brakes
- No Lockout
- Dexter
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Q&A: Brake Controller Recommendation for a Truck with Air Brakes and a Trailer with Electric Brakes
- Video: A Closer Look at the Dexter Adjustable-Channel Brake Actuator
- Video: FAQ Coupler Latch Styles
- Video: Dexter Brake Actuator Spec Review
- Shop: Dexter Zinc-Plated Brake Actuator - Disc - 2-5/16" Ball - Bolt On - 12,500 lbs
- Q&A: Disc Brake Upgrade on a 2012 Tandem Axle Boat Trailer
- Shop: Dexter DX6.6 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 6,600 lbs
- Shop: Dexter Brake Actuator - Painted - Drum - 2-5/16" Ball - Weld On - 12,500 lbs
- Shop: Demco Surge Brake Actuator w Electric Lockout - Disc - Primed - 2-5/16" Ball - 12.5K
- Shop: Dexter Adjustable-Channel Brake Actuator - Painted - Drum - Lunette Ring - Bolt On - 12,500 lbs
- Shop: Demco Hydraulic Brake Actuator - Drum - Primed - 8" Adjustable Channel Down - 8,000 lbs
- Shop: Demco Surge Brake Actuator - Drum - 2-5/16" Ball - Primed - 12,500 lbs
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Search Results: brake controller
- Article: Trailer Wiring Diagrams
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: trailer brake controller
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Article: Brake Controller Installation: Starting from Scratch
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer hitch
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Instructions to Wire a Trailer for Electric Brakes
- Search Results: trailer wiring
- Video: All About the Demco Hydraulic Brake Actuator-DM72VR
- Video: What to Know About the Demco Hydraulic Brake Actuator-DM72VR
- Search Results: trailer tires and wheels
- Q&A: What Gauge Wire Should be Used to Wire Trailer Brakes
- Article: How to Measure Your Trailer Wheel Bolt Pattern






Doug R.
3/20/2020
I need a coupler for my water trailer with a 25/16 ball hitch.