You are here: Home > Product Tutorials > Steering System Tutorial > Power Assisted Steering System Tutorial

The Ultimate in Steering Comfort

The Marine Industry is continually introducing heavier outboard engines, higher horse power engines, more aggressive propellers, bigger/faster boats…

Boat operators are asking for increased comfort and lighter steering loads… These were the driving forces behind the design of SeaStar and SeaStar PRO Power Assist.

This new and innovative product is highly recommended on any 200HP and above outboard application to give your boat the same, easy steering you are accustomed to in your car. Power Assist is also recommended for the following;

• Twin and Triple engine applications
• Bass Boats
• Power Catamarans
• Inboard powered cruisers without engine driven power assist.

SeaStar Power Assist

THE ULTIMATE IN STEERING COMFORT…

INTRODUCTION
The Marine Industry is continually introducing heavier outboard engines, higher horse power engines, more aggressive propellers, bigger/faster boats. Boat operators are asking for increased comfort and lighter steering loads. These were the driving forces behind the design of SeaStar and SeaStar PRO Power Assist.

This new and innovative product is highly recommended on any 200HP and above outboard application to give your boat the same, easy steering you are accustomed to in your car. Power Assist is also recommended for the following:
• Twin and Triple engine applications
• Bass Boats
• Power Catamarans
• Inboard powered cruisers without engine driven power assist.

Part # PA1200-2, PA1225-2 and PA1315-2 (PRO Series)

Applications
• 150HP+ single outboards.
• Heavy 4 stroke outboards.
• Twin/Triple outboards.
• Inboards where rudder torque makes wheel effort heavy or uncomfortable.

Features
• Dramatically increases steering comfort.
• Reduced wheel effort.
• Easy installation.
• Simple ‘add-on’ to existing SeaStar manual system (up to 2.0cu. in. helms).
• Number of turns lock to lock remains the same.
• Compatible with SeaStar Power Purge system.
• Compatible with autopilots.
• Wiring harness included.
• Ignition protected (SAE J-1171).
• Auto recognize system voltage (12V or 24V).
• ABYC, CE, NMMA, ISO 10592 Approved.
• Capable of floor or wall mount. No need to purchase extra kits.

……………………………………………………………………………………………………………………………………………..

HOW IT WORKS

SeaStar P/A (Power Assist) steering uses an electronically controlled hydraulic pump to provide “Power” for your SeaStar Hydraulic Steering system.

The SeaStar P/A system is comprised of two circuits: a hand operated manual system, which is the control element, and a
hydraulic power pump, which is the working element.

The manual system consists of a helm pump with internal relief and check valves, as well as a built in reservoir. Two steering lines and a compensating line which provide a routing for fluid to transmit through the system, and a steering cylinder which moves the steering device on the boat from side to side.

The power system, is an electronically controlled hydraulic pump that boosts the fluid being sent from the helm pump to the steering cylinder (this will result in much easier effort at the wheel—even when under heavy loads). A compensating line connects the P/A unit to the helm pump, allowing the P/A unit to share fluid with the helm reservoir.

The SeaStar P/A is compatible with multiple steering stations, and with the use of an autopilot. In the event of a P/A power loss or failure the hydraulic system will automatically revert to a manual hydraulic system.

SeaStar Power Assist Autopilot

INTRODUCTION
Converts manual hydraulic steering for dramatic reduction in steering wheel torque and at the same time provides a pump for an autopilot installation.

The SeaStar Power Assist Autopilot pump is the standard power assist product with the addition of a Type 1 or Type 2 autopilot pump. The SeaStar Autopilot pump is a fixed flow, reversible pump set that uses an internal hydraulic gear pump, producing very little vibration or noise. It is offered in 12 and 24 volt configurations, as well as two different pump sizes (type 1 & type 2).

Part # PA6010, PA6020, PA7010 and PA7020

Features
• Autopilot ready – a single installation (i.e. no need to break into system for install of pump).
• Converts manual hydraulic steering to power steering.
• Dramatic reduction in steering wheel torque.
• Easy installation.
• OEM or Retrofit.
• Simple add on to an existing SeaStar manual system (from 1.4 – 2.4 SeaStar helm pumps)
• Compatible with power purge system.
• Ignition protected (SAE J-1171).
• ABYC, CE, NMMA, ISO 10592 Approved.
• Replaces other 12 & 24 volt systems

……………………………………………………………………………………………………………………………………………..

TYPICAL INSTALLATION

……………………………………………………………………………………………………………………………………………..

SPECIFICATIONS

TECHNICAL
Voltage 12 or 24 Volts
Fittings Compatible with standard SeaStar Hoses (HO51xx etc.)
Oil Compatibility SeaStar Steering Fluid (MIL 5606)
Weight 4.9 lbs (2.2kg)
Autopilot Pump Sizes Type 1: 60 in3/min (no load)
Type 2: 100 in3/min (no load)
Max Pressure 1000psi
Typical Current Draw
(Depending on application)
12V Type 1: 4 – 8 amps
12V Type 2: 5 – 11 amps
24V Type 1: 2 – 4 amps
24V Type 2: 3 – 6 amps

SEASTAR PA UNIT COMPLETE WITH PILOT PUMP FITTED
Std. SPA + Type 1 12V Pump Part # PA6010
Std. SPA + Type 2 12V Pump Part # PA6020
Std. SPA + Type 1 24V Pump Part # PA7010
Std. SPA + Type 2 24V Pump Part # PA7020

WIRE DETAILS
Length 24″
Gauge 12 awg
Connector None – Bare Leads

AUTOPILOT PUMP CYLINDER CAPACITY
Type 1 4.9 in3 – 12.5 in3
Type 2 12.5 in3 – 21 in3

SeaStar AutoPilot Pump

INTRODUCTION
The SeaStar Autopilot pump is a fixed flow, reversible type set that uses an internal hydraulic gear pump, producing very little vibration or noise. It is offered in 12 and 24 volt configurations, as well as two different pump sizes (type 1 & type 2). It can be used as a stand alone pilot pump or can be mounted to a previously installed SeaStar Power Assist unit and can prevent the need to break into the hydraulic lines.

Part # AP1219, AP1233, AP2419 and AP2433

Features
• Long life DC Motor (i.e. long life brushes).
• Compact design.
• Simplified installation.
• Low power consumption.
• ABYC, CE and J1171 compliant.
• Superior corrosion resistance
• Quiet operation.
• Mounting bracket included.
• Stand alone or mounts to SeaStar Power Assist unit.
• Replaces other 12 & 24 volt pumps.

……………………………………………………………………………………………………………………………………………..

TYPICAL INSTALLATIONS

……………………………………………………………………………………………………………………………………………..

SPECIFICATIONS

TECHNICAL
Voltage 12 or 24 Volts
Fittings Compatible with standard SeaStar Hoses (HO51xx etc.)
Oil Compatibility SeaStar Steering Fluid (MIL 5606)
Weight 4.9 lbs (2.2kg)
Autopilot Pump Sizes Type 1: 60 in3/min (no load)
Type 2: 100 in3/min (no load)
Max Pressure 1000psi
Typical Current Draw(Depending on application) 12 or 24 Volts
12V Type 2: 5 – 11 amps
24V Type 1: 2 – 4 amps
24V Type 2: 3 – 6 amps

STAND ALONE PILOT PUMP (Can be retro fitted to a SPA unit)
Type 1: 12V–60cu”/min Part No. AP1219
Type 2: 12V–100cu”/min Part No. AP1233
Type 1: 24V–60cu”/min Part No. AP2419
Type 2: 24V–100cu”/min Part No. AP2433

WIRE DETAILS
Length 24″
Gauge 12 awg
Connector None – Bare Leads

AUTOPILOT PUMP CYLINDER CAPACITY
Type 1 4.9 in3 – 12.5 in3
Type 2 12.5 in3 – 21 in3

SPAA RETRO FIT KIT (3 Bolts / 3 O-rings)
Part No. HA1205

ADD A STATION KIT (Allows a SeaStar Pilot Pump
to be added into a manual hydraulic circuit.)
Part No. HF5501

SeaStar Power Purge Jr


INTRODUCTION
The EASY way to 100% purge air out of BayStar and SeaStar hydraulic steering systems.
The Power Purge Jr. reduces installation and warranty costs while enhancing the quality of the
boat to the end user. A typical manual fill and purge takes the average experienced installer or service
technician about 30 minutes per boat — by using the Power Purge Jr. this can be reduced to 10
minutes or less.

Features
• Steering feel is solid every time.
• 100% portable.
• Powered by 12v battery.
• Fast and efficient set up.
• Quick connect fittings.
• Easy to operate
• Filter screens help keep contamination out of your steering system
• Complete Fill & Purge in 10 minutes or less
• Optional Dual Cylinder Purging Kit HA5461 available

Hydraulic – Power Assist


SEASTAR AND SEASTAR PRO
SEASTAR POWER ASSIST – Book 17.2 (920k) 298403A
SEASTAR POWER ASSIST WITH AUTOPILOT – Book 41 (920k) 798323A
POWER ASSIST WITH COUPLER INSTALLATION – Rev. A (360K) 289323A
SEASTAR A/P TO POWER ASSIST RETROFIT – Rev. A (485K) 798324A
POWER ASSIST MAXI FUSE – Rev. A (52K) 298312A