Brian Goodwin
ABYC
As Technical Director for the American Boat & Yacht Council, I oversee standards that cover boat steering systems of all types. Regular inspection and preventative maintenance are essential to keep mechanical and hydraulic steering reliable and safe. Start by checking steering cables and hoses often: look for obvious wear, fraying, kinks, chafe or cracks in the outer jacket. For hydraulic systems, inspect for leaks and check the fluid condition. Air in a hydraulic system reduces responsiveness, so purge or bleed the system whenever you suspect sponginess or when components have been opened.
Always use the steering fluid specified by the manufacturer when topping up or refilling a hydraulic reservoir; the wrong fluid can degrade seals and reduce system life. A common but harmful DIY practice is using Teflon tape on hydraulic fittings to prevent leaks—do not do this. Teflon tape can break down and contaminate the hydraulic circuit, causing premature wear or clogged valves. Respect manufacturers’ recommendations for cable and hose bend radii and routing so components do not bind or chafe against structures. For mechanical steering gear, check for excessive play at the helm or at linkage points—excessive free play is an early warning that components are wearing and failure may be imminent. Routine inspections before each cruise and during season-start maintenance will catch problems long before they escalate.
Marty Bolcome
Rose’s Marine
At Rose’s Marine in Gloucester, Massachusetts, we serve as the Northeast service center for SeaStar and see the full range of steering-system problems. The single biggest enemy of hydraulic steering is contaminated or degraded oil. Clean hydraulic fluid is typically a clear amber color; fluid that looks like molasses or is dark and gritty indicates contamination or breakdown. Contaminated oil makes steering heavy, sluggish, or unpredictable and can cause damage to pumps and cylinders.
If you suspect steering trouble, draw a small sample of the oil and inspect it visually. Manual helm systems—where the helm itself acts as the pump and reservoir—are vulnerable to air intrusion, which causes a soft or spongy feel at the wheel. Those systems must be bled and refilled correctly to restore positive feel. Powered hydraulic systems use a separate pump and reservoir; because the pump runs frequently, the oil can overheat. A simple hands-on test helps: if you cannot comfortably keep your hand on the hydraulic tank after normal operation, the oil may be running too hot and an oil cooler or improved ventilation may be advisable. Proper filtration, scheduled fluid changes, and keeping the reservoir sealed from moisture and contaminants will extend system life and improve steering performance.
Evan Kwiatkowski
Dometic Group
As Supervisor of Technical Support for the SeaStar division of Dometic, I handle many calls about outboard steering issues. A frequent root cause is inadequate maintenance of the steering cylinder and its support components. The cylinder is attached to the outboard via brackets and a support rod that runs through the motor’s tilt tube. When the engine is tilted up or down, that support rod rotates in the tube. If the support rod binds or corrodes, the binding transfers load to the piston rod inside the steering cylinder, distorting seals and often leading to oil leaks and reduced steering performance.
We recommend removing, cleaning, inspecting and lubricating the support rod at regular intervals—commonly every six months for boats used frequently or exposed to saltwater—so it turns freely in the tilt tube. When inspecting the piston rod itself, run your fingernail gently along its length: if your nail catches on any rough spot, pitting or damage is present and the rod should be serviced or replaced. Keeping mounting hardware tight, using recommended lubricants, and protecting exposed rods from corrosion will help prevent seal damage and costly cylinder repairs.
This article originally appeared in the August 2019 issue.