Seastar Hh5271 Parts Diagram: [updated]

The SeaStar (1.7 cu. in.) is a front-mount hydraulic helm pump designed for manual steering systems. It features an axial piston design where load-bearing points run on roller or ball bearings for smooth operation. Seatech Marine Products HH5271 Helm Parts List

Technical Write-Up: Seastar HH5271 Helm Pump Parts Diagram

A. The Main Housing (Body)

• Part #1 (Cast Iron/ALU): The main cylinder block.
• Ports: Two threaded ports (usually SAE 6 or 8). Labeled "R" (Right/Starboard) and "L" (Left/Port) for hydraulic line connection.

B. The Input Shaft Assembly (Where the steering wheel attaches)

Helm Pump Unit

: An axial piston pump with a built-in lock valve to prevent rudder feedback . Seastar Hh5271 Parts Diagram

5. Troubleshooting using the Diagram

For routine servicing, the following kits and parts are frequently used: SeaStar HH5271-3 Front Mount 1.7 Hydraulic Marine Helm Pump The SeaStar (1