Steering System Tutorial
Hydraulic Steering Systems FAQ’s
Hydraulic Steering Cylinders
The -3 cylinders mount the exact same as the older ones, have the same
volume and output. We have gone to a fully anodized aluminum parts,
and to ORB hose fittings in the cylinder body.
There are several reasons why seals will leak, even after a repair has
been made previously. The most common fault is a damaged steering
cylinder shaft, or, an installation that is not done properly, leading
to more stress on a seal. To ensure that your cylinder is re-sealed
correctly we recommend contacting one of our Authorized Repair Centers
to assist with the repair. Authorized
SeaStar Solutions does NOT make engine extension plates for any engine
newer than a 2004. If your current cylinder is an HC5340, HC5340-42 or
an HC5342, you will need to update the steering cylinder and tiebar
with current models. Please see “Outboard Section”
If your boat is driven in an aggressive manor, used in tournaments,
then you should be using the tournament cylinders. Please go to the
SeaStar Outboard section for further information
This type of conversion is to be completed by one of our repair
centers only. Please visit our Technical Support area for a list of
authorized repair centers. Authorized
I find that almost all the time, the support rod is ready to seize up
in the tilt tube, because someone has failed to clean and grease it.
Please do this at least ONCE a year, it WILL save you money.
You are right. SeaStar PRO cylinder has better seals and bushings to
reduce wear caused by the higher horsepower engines. No worries, the
old cylinder is still adequate.
Please contact us via e-mail to find out your options. Do not try to
make the cylinder fit.
Yes. you will need to purchase kit #HA5461. It comes complete with
Hydraulic Steering Power Assist
Power Assist is your best option. Engines have become much heavier,
have a much higher output and much more torque than previous, SeaStar
Power Assist will make your steering very easy to turn, regardless of
the horse power.
In short “Maybe”. Your steering system may be undersized, this
requires much more effort to turn the wheel. SeaStar Power Assist will
“help”, however if the cylinder is undersized your best option may be
to increase the size of the cylinder providing more “force” to move
the rudder(s) over.
This DC Power will replace the conventional, engine driven power
steering that you see on large boats. Contact SeaStar Solutions for
Part # HA1206 can be ordered to cure this. This is a 50A, MAXI fuse.
NOTE: All current Power Assist Units utilize this same, MAXI fuse
Hydraulic Steering General
We have no preference of a/p makes. Mostly, ALL will work without
issue in our systems.
BEFORE EVERY TRIP
* Check fluid level in helm pump
* Check hoses to ensure that they are in good condition.
* Turn steering wheel hard over to hard over.
BayStar is rated to 150HP MAX (transom rating). Pontoon boats and Bass
boats will likely be hard when using BayStar, as this is the taking
the BayStar system to its maximum. SeaStar will make the system easier
to turn, and, you have the option to add SeaStar Power Assist.
You must contact your local Distributor for this information, we only
sell through our Distributors.
These are tricky. Please go to the download section of this site and
download book No. 9.1. This is the only way to bleed the system.
Not too much really. Check the fluid level, just as often as you check
you cars. Most important, GREASE THE TILT TUBE on your outboard
The 24 hour message is just to let customers know that during busy
season, it may take that long. We try our hardest to get back within a
couple hours, sit tight, we will call.
Any Spanner Pin wrench from any mfg will work, be sure that the wrench
has the following specs. Adjustable from .75″ to 3″ Has a 1/8″ Pin.
Could be the o’ring is broken, or the plug has been over tightened and
damaged. Send an email to us and we will send you a new one.
We find that many of the times the steering cylinder is frozen in the
cylinder body, to check this, remove the steering lines and try to
push the cylinder, if you can’t move it, replace it.
Actually YES. I have felt it myself. Of course if your prop is out of
the water, so will the tab. Stiff steering will happen if the prop is
not totally submerged under water.
No. BayStar is a single engine single station steering system.
We only recommend that one of our Authorized Repair Centers perform
any repair work on our products.
Authorized Repair Centers
In most cases YES. We are the factory so a turn around time cannot be
guarenteed. Please see next question for other repair partners.
Due to a small amount of internal hydraulic slip these style steering
wheels should not be used. For best results use an equal distance
NO! You CANNOT cut SeaStar outboard hoses. Take up the slack under the
dash, or anywhere else, once that hose is cut, it is garbage.
For service work, any “qualified” marine technician should be well
trained in the service of your system. For repairs of hydraulic
components we only recommend that you contact one of our Authorized
Repair Centers. Authorized
That is a tool for bleeding. Simply put one end on the bleeder that
you are working on, and the other end in a clean container.
In most cases you can, please contact us via e-mail with what you are
looking to do, and we can assist you with all the details.
If you know that it has been bled good, and there is no other
restriction then this is normal. BayStar is a smaller version of the
SeaStar and will feel slightly heavier to steer.
Refer to your owners manual. Having the correct amount of wheel turns
hard over to hard over is a good sign the system is free of air.
Good question! If you need to contact us and see no numbers of any
kind, please have as many measurments ready for when we ask. Any
number in the system will help us help you.
I like to say ALWAYS, it is simple to check, and it is your steering.
The best time is as soon as you step on board BEFORE touching the
steering wheel. Fill if needed.
It is fairly easy to replace. Confirm the year of your pump, and go to
the Replacement parts page, there you will find the proper seal kit.
This can be changed in minutes.
SeaStar Solutions (us) have assumed support of the Hynautic Hydraulic
Controls. Please direct your questions to us.
At this time, no. We only offer the Outboard Pro and Standard kits
with the Standard front mounting helm, front mount pivot cylinder, two
lengths of hose and two bottles of SeaStar Steering fluid.
Yes. The hose will work with the BayStar 150HP (total) system.
The best way is via e-mail from this site, we ask that if you are
plannning on e-mailing us through this site, please provide all(if
any) part numbers off of your system, this saves time.
Yes. We here at SeaStar Solutions are doing our best to give ALL of
the Hynautic customers the same support we give SeaStar customers,
this web site will be updated with Hynautic information shortly.
You can locate and print off you owners manual on this site by going
to the site map and locating the DOWNLOADABLE PDF files.
Adjust Torque Tab on motor to offset prop torque. Adjust trim tabs so
that boat runs level. Trim out your engine. Eliminate air by purging
The Sytten System was obsoleted in 1984. We no longer have “any” parts
available. Your Helm Pump can be replaced with HH5271 & HA5418. The
cylinder should be replaced with HC5313 & HA5425.
In Emergencies only. ATF will void the warranty and decrease the
efficiency of the steering system. SeaStar Steering Fluid can be
replaced by any Hydraulic fluid with Mil Spec H5606.
SeaStar Solutions sells through an established distributor network.
Consult your local Marine retailer, dealer or check your yellow pages.
A seal kit will NOT work if there is any damage to the steering
cylinder shaft that will not allow a new seal to seal. To ensure that
the cylinder is repaired properly we recommend contacting one of our
Authorized Repair Centers to assist with the repair. Authorized
Hydraulic Steering Helms
This is correct. We have recently launched the new “Classic Tilt”, and
this helm will replace ALL Traditional Tilt helms. Your hoses and
cylinder will work just fine. The new Classic Tilts have a different
style (in regards to cosmetics), and also comes with the newly
designed Tilt Mechanism (much better than the previous).
We offer two models, as follows;
* HA6123 for sport tilt helms (soft rubber boot)
* HA6523 for Traditional and Classic Tilt (hard plastic covers).
This is the new cover for the SeaStar helm pump. Only the cover has
changed, you will still enjoy the easy, most reliable steering on the
market today. YES – it will work with older helms as well.
When it came time to re-tool for this product, SeaStar Solutions made
several updates and improvements to the BayStar helm, one of which was
the metal cover. This will work with all older parts on board your
boat. NOTE: You will need to drill out 4 mounting holes for the new
helm (the older one had 3).
Unfortunately you cannot retrofit a tilt helm into the old cut out
without filling in the hole in your dash and re drilling.
|Boating Safety is Everyone's
As a boater, you are responsible for having all required
safety equipment, for operating your boat safety and for ensuring the safety
of those on board your vessel as well as those sharing the waterways.
Boaters exercising courtesy and common sense will not create a hazard,
threat, stress or an irritant to themselves, to others, to the environment,
or to wildlife.
- Wear an approved Personal Flotation Device (PFD)
- Read your owner's manual.
- Attach engine stop switch securely to your body or PFD.
- Respect the speed limits and other boating restrictions.
- Be cautious and courteous.
- Navigate with care.
- Understand the behaviour characteristics of your vessel that might
result from unexpected manoeuvres, such as sudden deceleration, high-speed
obstacle avoidance, and other speed related issues.
Become informed and stay informed!
"Take an accredited boating safety course"
The SeaStar Hydraulic System
High-horsepower/high-speed boating is here and steering
systems must perform at maximum capacity. The SeaStar Hydraulic Steering
System is designed to provide that extra margin of muscle when needed. The
SeaStar system easily handles
Inboard engines in boats up to 50 feet.
System selection, installation and service is substantially
simplified with just three major components – helm, cylinder and tube or
hose. SeaStar has a comprehensive range of available cylinders to handle a
variety of Outboard, Sterndrive and Inboard steering applications. These are
suitable for both pleasure and commercial applications. Extra steering
stations and/or autopilots are easily added.
SeaStar hydraulic steering is a total commitment to quality,
performance and simplicity.
SeaStar, the hydraulic steering system that is:
Easy to install...
Only three components: helm, cylinder & tube or hose
Compact and attractive helm design
Variety of helm mounting configurations
Simple tube/hose fitting connections
Clear, complete installation instructions
Easy to fill and purge...
Engineered bleed fittings on the cylinders
A helm and lock valve design that enhances air removal
A no-mess filler device
A filling and purging time of normally less than 30 minutes
Easy to check for proper installation
Easy purging check via filler device
No searching for difficult-to-find air leaks
Easy to turn...
Anti-friction piston points
Designed to provide many years of service...
Heavy-duty bearings instead of bushings
All metal construction
No corrosive materials exposed to marine environment
Field replaceable helm and cylinder shaft seals
A no-hassle warranty – 2 years for pleasure use – 1 year for commercial
SeaStar! Simply the best!
hydraulic steering systems are simple and efficient. The basic system
consists of three main components:
the hose or
tubing required to connect the cylinder to the helm pump.
components are necessary in all applications. However as the system
variables increase (e.g.: multiple engines, rudders, steering stations and
autopilots), additional components may be required.
1. The Helm
The SeaStar helm pump is an axial piston pump specifically designed for
manual steering. It has a built-in lock valve to prevent the steering load
from feeding back to the driver. The lock valve will not allow the rudder or
drive unit to move until you move it with the steering wheel. The lock valve
section of the helm also includes a relief valve. This relief valve provides
over-pressure protection for mechanical components and hydraulic hoses and
The most important differences between the variety of SeaStar steering
systems available is the cylinder selection. The SeaStar system has a
cylinder for most steering applications.
Required to provide a path for the fluid to flow under pressure from the
helm pump to the cylinder.
HOW IT WORKS
The SeaStar system is a two-line system. This makes operation very simple.
steering wheel, which is attached to the helm pump, is rotated in the
desired direction (i.e.: a turn to starboard or clockwise rotation).
- Oil is
pumped out the corresponding port from the rear of the helm into the
starboard line and then into the cylinder.
the cylinder rod, which is attached to the vessels rudder or drive unit,
to move (i.e.: rod moves to port) thus causing the vessel to alter
displaced from the opposite end (i.e.: the port end) of the cylinder flows
(i.e.: into the port line) back to the helm pump.
steering in the opposite direction, simply turn the helm the other way.
- When no
course corrections are required, the integral lock valve holds the rudder
or drive unit stationary.
SELECTING A SYSTEM
The objective is to match the steering system to the requirements of the
vessel. This depends on four things:
vessel (i.e.: planing or displacement),
propulsion system in the vessel (i.e.: Outboard, Sterndrive, Inboard,
the number of
engines or rudders,
power of the engines (i.e.: Horsepower).
Next choose a cylinder that best meets these requirements. Once the cylinder
has been selected, the size of the helm pump is predetermined. The options
left to specify are:
number of steering stations,
configuration (i.e.: standard or tilt helm),
additional features such as autopilots.
the appropriate section of the web site for to make your selections.
Notes on Steering Response versus
Steering wheel effort is directly
proportional to the number of wheel turns lock to lock. The number of wheel
turns lock to lock is dependent on three things:
the volume of the cylinder,
the displacement of the helm pump,
the allowable movement of the rudder or drive unit.
Less wheel turns lock to lock results in
more steering effort. More wheel turns lock to lock results in less steering
effort. However, additional factors that can influence steering effort are:
unusual propellor selections,
hull type (i.e.: displacement, planing, etc.), and
- steering wheel size.
Recommendations made on this web site
are guidelines based on average acceptance of steering effort.
***The price is subject to change at anytime without any notice
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