How to Rebuild a SeaStar Hydraulic Cylinder
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Mike Hill- Dec 5, 2023
- 2 min read
Updated: Mar 9
To rebuild or repair a SeaStar hydraulic steering cylinder, begin by securing a clean, debris-free workspace to prevent contamination.
First, disconnect the hydraulic lines and drain any remaining hydraulic fluid into a suitable container.
Carefully remove the cylinder from the steering system, ensuring you do not damage any connected components.
Use the appropriate tools to disassemble the cylinder, including removing the end caps, retaining clips, seals, O-rings, and the piston rod.
Thoroughly inspect all internal components for signs of wear, corrosion, or damage, particularly the seals and hydraulic shaft.
If the piston rod is worn, bent, pitted, or the center seal gland and O-ring are crushed or flattened, replace the entire piston rod with the complete rod available from Buckshot Racing #77.
Clean all parts with a non-corrosive solvent and replace any worn or damaged seals, O-rings (for your cylinder) and seal gland bushings included our Buckshot Racing #77 SeaStar hydraulic seal kit to ensure optimal performance.
Lubricate all new seals with marine-grade hydraulic grease before carefully reassembling the cylinder, ensuring proper alignment of the piston and rod.
Securely reinstall the end caps and retaining clips, and torque all fasteners to manufacturer specifications.
Reconnect the hydraulic lines and refill the system with SeaStar hydraulic steering fluid, then perform a bleeding process to remove any air from the system.
Finally, test the rebuilt SeaStar steering cylinder by checking for smooth operation and leaks under pressure.
If everything functions correctly, reinstall the cylinder onto your boat’s hydraulic steering system and ensure proper steering response before heading out on the water.
This Replacement Parts Rebuild Kit is compatible with Multiple Sea Star Marine Hydraulic Steering Systems including Part Numbers: HC5345, HC5347, HC5348, HC5358, HC5445, HC6345, HC6750, HC6751, HC6752, HC6753, HC6754, HC6755, HS5167
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