How to Bleed an Actuator As Well As The Brake Lines On A Trailer
Published 04/06/2026
Question:
How to bleed actuator / brake lines.
asked by: Wayne
Expert Reply:
Hey Wayne, here’s how to bleed your trailer brakes step-by-step.
I’ve also included a help article and video if you’d like a visual walkthrough, but these steps will walk you through the process:
Step-by-step
* Fill the reservoir – Add fresh brake fluid to the actuator.
* Start at the farthest wheel – Begin with the brake farthest from the front.
* Attach a hose – Put clear tubing on the bleeder screw and into a container.
* Compress the actuator – Push the actuator in to build pressure.
* Open the bleeder – Let fluid/air out, then close it before releasing pressure.
* Repeat until clear – Continue until no air bubbles appear.
* Move to the next wheel – Work your way toward the front.
* Top off and test – Refill fluid and check for a firm braking feel.
A few tips for best results
* Keep the reservoir at least half full to avoid pulling in air
* Always close the bleeder before releasing pressure
* You’ll know you’re done when the fluid runs clear and the brakes feel firm
If your brakes still feel soft after bleeding, there may still be air in the system or a leak somewhere.
What kind of trailer are you working on?
Product Page this Question was Asked From
Dexter Brake Actuator with Manual Lockout - Bolt On - Drum - 2" Ball - 7,500 lbs
- Brake Actuator
- Surge Brake Actuator
- Boat Trailer
- Construction Trailer
- Farm Trailer
- Travel Trailer
- Utility Trailer
- Bolt-On
- 7500 lbs GTW
- 2 Inch Ball Coupler
- 3 Inch Channel Tongue
- Drum Brakes
- Manual Lockout
- Dexter
more information >
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