How Does The Demco Hydraulic Brake Actuator DM72VR Bolt On?
Updated 09/08/2025 | Published 06/09/2025
Question:
Hello, In the one install videos for DM72VR they use individual carriage bolts on both sides. The other video says I will need grade 5 4.5inch bolts like the one im replacing. Is this sufficient? Thanks
asked by: Curtis C
Expert Reply:
Hello Curtis, thanks for reaching out. Either way will be sufficient for mounting the Demco Hydraulic Brake Actuator # DM72VR. It just depends how the tongue is configured. If the actuator you are replacing uses grade 5 bolts and nuts that it totally fine to bolt it on that way. Just be careful not to over tighten. See the picture I attached.
What kind of trailer do you have? Just curious
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 7,000 lbs
- Brake Actuator
- Surge Brake Actuator
- Farm Trailer
- Boat Trailer
- Construction Trailer
- Travel Trailer
- Utility Trailer
- Bolt-On
- 7000 lbs GTW
- 2 Inch Ball Coupler
- 3 Inch Channel Tongue
- Drum Brakes
- No Lockout
- Demco
more information >
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Jesse M.
9/8/2025
Hey Curtis, did you find that using the grade 5 bolts worked well for your trailer setup? I'm curious to know because it could help others with similar installations.