Bleeding Brake Lines During Installation of HydraStar Electric Over Hydraulic Actuator HBA16
Updated 05/22/2025 | Published 02/21/2019
Question:
I’m installing new calipers on my trailer and I don’t have a truck to use to bleed the brakes, can I use a hand vacuum pump instead? Also what type of brake fluid do I need? Thanks!
asked by: Tim
Expert Reply:
You can use a hand pump to bleed your trailer's brake lines or you can use 12V power input to the actuator from a charged 12V battery to power the actuator so you can clear the system of air. The HydraStar Electric Over Hydraulic Actuator # HBA16 uses either DOT 3 or DOT 4 brake fluid; you will need at least a quart to fill the actuator.
The written instructions for this item are linked for your reference along with both review and installation videos for the # HBA16.
Product Page this Question was Asked From
Hydrastar Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- Boat Trailer
- Travel Trailer
- Disc Brakes
- Hydrastar
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Phil
5/22/2025
Adam Hi Could u just pull emergency breakaway clip? Then keep filling reservoir. Cordially Phol