Product Overview
The Bennett V351HPU2 Hydraulic Power Unit is designed to generate hydraulic pressure for the operation of trim tabs. This compact electrohydraulic unit utilizes two solenoid valves to precisely control fluid flow to the actuators, enabling the lowering and raising of trim tabs. The solenoid valves are engineered to securely lock the tabs in their desired position. Its robust design provides sufficient strength to manage and hold even large trim tabs. A translucent Lexan cover protects the internal components from water exposure and allows for quick visual inspection of the fluid level.
Key Features
- Compact design for hydraulic pressure generation.
- Two solenoid valves for precise fluid direction to actuators.
- Solenoid valves ensure secure locking of trim tabs.
- Lexan cover provides protection and allows fluid level monitoring.
- Operates on 24 Volt power.

Image of the Bennett V351HPU2 Hydraulic Power Unit, a compact 24-volt electrohydraulic unit with a translucent Lexan reservoir cover.
Setup
Unpacking
Carefully remove the hydraulic power unit from its packaging. Inspect for any visible damage. Retain packaging for future transport or storage.
Mounting
Select a dry, protected location for mounting the unit. Ensure adequate ventilation and accessibility for maintenance. Secure the unit firmly using appropriate fasteners.
Electrical Connection
Connect the unit to a stable 24-volt DC power source. Ensure correct polarity. Refer to the wiring diagram provided with your trim tab system for specific connections. Use marine-grade, appropriately sized wiring and connectors.
Hydraulic Connection
Connect the hydraulic lines from the trim tab actuators to the designated ports on the power unit. Ensure all connections are tight to prevent leaks.
Fluid Filling
Fill the translucent reservoir with the recommended hydraulic fluid. Do not overfill. The fluid level should be visible through the Lexan cover.
Operating Instructions
Basic Operation
The hydraulic power unit activates when commands are sent from the trim tab control switch. It generates pressure to move the trim tabs.
Trim Tab Control
Use the trim tab control switch (sold separately) to lower or raise the trim tabs. The solenoid valves will engage to hold the tabs in the selected position.
Maintenance
Fluid Level Check
Regularly inspect the fluid level through the translucent Lexan cover. Maintain the fluid level within the recommended range.
Reservoir Inspection
Periodically check the reservoir for any signs of contamination or debris.
Electrical Connections
Ensure all electrical connections are clean, tight, and free from corrosion.
Lexan Cover Care
Keep the Lexan cover clean. Avoid using abrasive cleaners that could scratch the surface.
Troubleshooting
General Issues
If the unit is not functioning as expected, first verify all electrical and hydraulic connections are secure.
No Power
Check the 24-volt power supply, fuses, and wiring for continuity.
Tabs Not Responding
Verify the control switch is functioning correctly. Check for obstructions in the hydraulic lines or issues with the actuators.
Fluid Leaks
Inspect all hydraulic connections and lines for leaks. Tighten any loose fittings. If a leak persists, professional inspection may be required.
Specifications
| Feature | Detail |
|---|---|
| Manufacturer | Acr Electronics |
| Brand | Bennett Marine |
| Model | Bennett V351HPU2 Hydraulic Power Unit - 24 Volts |
| Item Weight | 4.8 ounces |
| Product Dimensions | 14 x 14 x 5 inches |
| Item Model Number | BEN A1101A |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | A1101A |
| OEM Part Number | BENA1101A |
| ASIN | B0006BJT00 |
| Date First Available | June 26, 2007 |
Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact Bennett Marine directly through their official website or customer service channels. Keep your purchase receipt for warranty claims.






