Can The DA91 Actuator Install 1" Above The Trailer Tongue
Updated 01/05/2026 | Published 09/20/2024
Question:
I recently purchased this DA91. When I went to mount it on the tongue thinking it would be a direct bolt up, I was wrong. The 4 forward holes in the unit are 1inch lower than the holes in the tongue. If I use the existing holes, This unit will sit 1inch above the tongue and not be resting on it. Is this the way I am suppose to mount this actuator? If Not, Then Now I need to drill new holes in a galvanized trailer. Please advise.
asked by: Don
Expert Reply:
Hello Don. It is normal for the actuator to sit a bit above the tongue like you described. You do not need to drill new holes. If you use the current holes you will want to put some kind of material under the actuator to fill the void between the tongue and the actuator. A piece of steel would be fine, as long as the open space is filled. You can drill new holes if you prefer, but it is not required.
Product Page this Question was Asked From
Demco Hydraulic Brake Actuator - Disc - Zinc - 8" Adjustable Channel Center - 8,000 lbs
- Brake Actuator
- Surge Brake Actuator
- Construction Trailer
- Farm Trailer
- Bolt-On
- 8000 lbs GTW
- Channel
- 3 Inch Channel Tongue
- Disc Brakes
- No Lockout
- Demco
more information >
Continue Researching
- Q&A: Replacement for Atwood Surge Brake Actuator 85778
- Search Results: st205 75r15
- Search Results: 5 flat custom fit vehicle wiring
- Search Results: surge brake actuator brake actuator
- Search Results: trailer tires and wheels
- Search Results: dust cap rubber plug
- Search Results: trailer hubs and drums accessories and parts
- Search Results: electric drum brakes trailer brakes
- Shop: 7-Way to 4-Way/5-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs
- Video: What to Know About the Demco Hydraulic Brake Actuator w/ Electric Lockout
- Shop: Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 7,000 lbs
- Video: Review of the Demco Hydraulic Brake Line Kit for Single Torsion Axle Trailers
- Shop: 2" Lubed Dust Cap & Rubber Plug - 1.99" x 1.40" x 1.18" - Qty 1
- Shop: Trailer Wheel Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Shop: Loadstar ST205/75D15 Bias Trailer Tire w/ 15" Galvanized Wheel - 5 on 4-1/2 - Load Range C
- Shop: Loadstar ST205/75D15 Bias Trailer Tire - Load Range C
- Shop: Bearing Kit for Trailer Brakes w/ 8" or 10" Hub/Rotor - EZ-Lube - 3,500 lbs
- Video: Camco RV Fresh Water - Water Treatment - CAM40207 Review
- Article: Trailer Wiring Diagrams
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Video: How to Choose a Trailer Brake Controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Video: Curt T-Connector Vehicle Wiring Harness Review C56040
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Video: Clean Up Your Trailer Wiring
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Recommended Bike Rack and Dual Hitch Adapter for Carrying E-Bikes While Flat Towing
on Brake Actuator
Jesse M.
1/5/2026
Hey Don, how did things go with mounting the Demco actuator on your trailer tongue? Did filling the gap with a steel spacer give you a solid fit? Your update could make it easier for the next person working with the same setup.