Check the shaft seal for any signs of seepage.
Absorbs the mechanical load and friction generated when turning the wheel under heavy steering loads. 3. Internal Valve Assembly
Two internal valves calibrated to open at 1000 PSI to protect the hydraulic system from over-pressurization.
Connected to the shaft, it spins as you turn the wheel. Seastar Hh5271 Parts Diagram
| Specification | Detail | |---|---| | Part Numbers | HH5271, HH5271-3, HH5271-4 | | Displacement | 1.7 cu in (27.8 cc) | | Relief Valve Setting | 1000 PSI (70 Bar) | | Shaft Type | Standard 3/4" tapered steering shaft | | Ports | -5 ORB ports with stainless steel O-ring fittings | | Mounting Type | Front mount | | Maximum Steering Wheel | 28 inches (660mm) in diameter | | Horsepower Rating | Up to 350 HP (single engine), up to 700 HP total (multiple outboards) | | Finish | Satin black baked enamel over anodizing |
Autopilot pumps must be connected to the steering lines after the P/A unit. The return (R) line must be tee'd into the system in front of the P/A unit.
Some installations require the helm pump to be mounted from behind the dashboard rather than from the front. The provides a square backplate that allows the HH5271 to be installed in this configuration. This kit includes all necessary hardware for a secure installation. Check the shaft seal for any signs of seepage
On an official Dometic diagram for HH5271:
The most common wear item, responsible for keeping oil inside the helm and preventing it from leaking onto your console. B. External & Mounting Components
Protects the system from over-pressure, typically set to 1000 PSI. Service & Replacement Parts Fixing Common SeaStar Hydraulic Steering Problems Internal Valve Assembly Two internal valves calibrated to
The HH5271 parts diagram is typically an exploded-view illustration that organizes components into functional groups. Key assemblies visible in the diagram include:
The Seastar HH5271 is a popular hydraulic helm pump used in various marine applications. As with any complex system, it's essential to have a clear understanding of its components and how they interact. A Seastar HH5271 parts diagram is a valuable resource for anyone working with this system, providing a visual representation of its various parts and their relationships.