What are the symptoms of a failing power assist steering pump?

Common symptoms include hard or jerky steering, delayed response when turning the wheel, whining or grinding noises from the pump, assist that cuts in and out, and visible hydraulic fluid leaks. These signs mean the pump may be failing and should be checked before the boat goes out again.

Is it safe to operate my boat with a bad power steering pump?

No, operating a boat with a failing power assist steering pump is unsafe. Loss of steering assist can make the boat difficult to control, especially when docking or when you have to turn quickly to avoid something. Continued use may also damage the steering ram, helm, or hoses, leading to more expensive repairs.

What is included in your power assist steering pump replacement service?

Our service includes removing the failed pump, inspecting hoses and fittings, installing a new or OEM-equivalent pump, refilling with manufacturer-approved hydraulic fluid, bleeding the system, and testing steering operation under load. We check that the steering is smooth, quiet and responsive before we hand the boat back.

Do you check other steering components during pump replacement?

Yes. During pump replacement we inspect the hydraulic steering ram, helm unit, hoses, seals, and belt drive (if applicable). This prevents installing a new pump into a system that may have underlying issues such as internal leaks or contamination.

How long does a power assist steering pump replacement take?

Most power assist pump replacements take 2-4 hours of labor once the pump is on hand. If we find other problems, such as contaminated fluid or damaged hoses, the job takes longer, and we tell you what we found and get your OK before doing more.

Do you use OEM parts and provide a warranty?

Yes. We install a new pump from the original maker (such as SeaStar or Mercury) or an equivalent unit named in your written estimate. The pump carries its manufacturer's warranty, and our workmanship is warranted for 90 days from the invoice date.

Do you offer mobile service at the marina for steering pump replacement?

Yes. We work at your boat in harbors from Marina del Rey to Newport Beach, and most power assist pump replacements are done dockside without a haul-out. A one-way trip fee by distance applies, from $30 in San Pedro to $110 in Newport Beach, and is shown in your written estimate.

Marine mechanic using a socket wrench to remove a failing power assist steering pump

Marine mechanic using a socket wrench to remove a failing power assist steering pump (2)

Power Assist Steering Pump Replacement

Turning a 300HP outboard shouldn't feel like a gym workout. We diagnose and replace failing electric-hydraulic power assist pumps, so the whine stops and the steering is light again.

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$150 /hr

Labor estimate Usually 2–4 hours

Book sends us a ticket; nothing is charged online. Before any work you get a written estimate for labor, parts and the trip fee, and nothing is done without your OK.

Trip fee By distance, one way: $30 in San Pedro, $50 in Long Beach

San Pedro$30
Wilmington, Terminal Island$40
Long Beach: Shoreline, Rainbow Harbor$50
Long Beach Marina, Alamitos Bay$60
Redondo Beach$60
Seal Beach, Huntington Harbour$75
Marina del Rey$85
Newport Beach$110

Farther away: $25 plus $2.50 a mile, one way from our San Pedro shop. No trip fee when the boat comes to our shop, or for plan members. The work of a visit is at least $150; the trip fee is on top.

Registered in California: Breeze Marine Boat Service LLC, San Pedro
Where we work: At your slip from Marina del Rey to Newport Beach, or in our San Pedro shop
Questions first: (213) 693-0224 or submit a ticket

About this service

Effortless Control

One-Finger Steering.
High Horsepower.

Turning 600HP of outboard power shouldn't require a gym membership. We diagnose and replace failed electric-hydraulic power assist pumps, restoring the smooth, silent, and effortless steering your boat was built for.

The Warning Whine

Is your marine power steering pump screaming when you turn the wheel? A loud, high-pitched whine is a common sign of pump motor failure or air cavitation. Ignoring it can lead to a sudden loss of assist while underway.

High-Current Diagnostics

These pumps draw massive amperage (up to 60A). Before replacing an expensive pump, we test your voltage drop, fuses, and relays to make sure the problem isn't just a bad ground or weak battery.

Autopilot Integration

Power assist pumps sit in-line with your autopilot. Replacing them requires careful re-plumbing and purging to ensure your autopilot doesn't get confused by trapped air bubbles or pressure spikes.

The Replacement Protocol.

From heavy to hydraulic heaven.

Electrical Audit

We test the 12V/24V supply under load. Power assist motors are sensitive to low voltage. We verify the "trigger wire" from the ignition is functioning correctly.

Pump Replacement

We remove the old SeaStar power assist or Mercury pump unit (usually buried deep in the console or bilge). We install the new unit with fresh hydraulic fittings.

Air Purge

Installing a new pump introduces air. We circulate fluid through the entire loop (helm, pump, autopilot, engine) until no air remains.

Sea Trial

We test the boat on the water, performing hard turns at speed to check that the assist motor kicks in without lag or noise.

Silent Power.

Expert installation of complex systems.

Power-assist hydraulic steering pump installed in a boat

High-current fuse block wired for power-assist steering

Bleeding the steering on a center console

Systems We Service.

We work on these power assist systems.

SeaStar / Dometic PA1200 / PA1202 Series

Mercury Marine Verado Power Steering

Optimus Electric/Joystick Steering

Common Questions

Why is my steering so heavy?

If the wheel feels "dead" or requires two hands to turn, your power assist pump has likely failed or lost power (blown fuse). Do not operate the boat at high speeds in this condition.

Can these pumps be rebuilt?

Generally, no. They are sealed units containing high-pressure gear pumps and complex electronics. Factory replacement is the only reliable option for safety.

Steer with Ease.

Get your power assist checked today.

Fix Power Steering

The Pump and the Rest of Your Marine Steering Gear

A power assist pump is one part of a hydraulic loop, and it only works as well as the marine steering gear around it. The helm, the pump, the autopilot and the steering at the engine all share the same fluid, so after a power assist steering pump replacement we purge the entire loop until no air remains, then sea-trial the boat with hard turns at speed.

Before your appointment, note what you are hearing and feeling: a high-pitched whine when you turn, a wheel that suddenly feels heavy or dead, or assist that cuts in and out. Let us know whether the boat has an autopilot and which system it runs, such as SeaStar, Mercury Verado or Optimus. If you notice heavy steering, do not run the boat at high speed until the system has been checked.