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Author Topic:   Evinrude 225 power steering

davidestel posted 12-10-2006 12:10 PM ET (US)
Hi!
i would like to install the power steering sistem on my evinrude 225hp year '88.
i bought an used kit on the net...
Knows somebody where to find a design or instructions to install it on the engine?
thanks
Marco
alfa posted 12-10-2006 12:19 PM ET (US)
Is it a Teleflex system ?
http://www.seastarsteering.com/
Good luck !
kingfish posted 12-10-2006 03:07 PM ET (US)
Marco-
There are two completely separate systems we may be talking about here: one is power steering and one is hydraulic steering.
My 1992 Evinrude 225 came with OMC power steering, and it said so right on the cowling. That was a system proprietary to OMC and Evinrude, and consisted of a hydraulic pump under the cowling that ran by belt off the crankshaft of the motor via a pulley underneath the flywheel. Motors like mine with power steering were apparently designed to be used on boats that didn't have hydraulic steering. Or maybe they were an early attempt to provide hydraulic steering when it wasn't all that available for smaller boats. The bearings on my system eventually started to fail, and I wound up removing all related parts of the power steering system from the motor (belt, pump, reservoir, hydraulic lines, etc.) and then replaced the OMC Power Steering cylinder on the front of the motor with a Teleflex Hydraulic cylinder that my existing hydraulic lines from the steering wheel were able to connect directly to with no problem or additional parts.
So now I have hydraulic steering, without the power of a belt-driven pump, and it works at least as well and as easily as my original power steering.
Which of the systems I just described do you think you are talking about?
John
contender posted 12-10-2006 08:25 PM ET (US)
Kingfish is correct, power steering was an OMC 225 under the cowling with a belt. Kingfish is also correct, it worked when it was new but then the bearing gave out. Kingfish hit the nail on the head, took out the power steering and and trash it went to sea star hyd. steering hense no problems...good luck
davidestel posted 12-11-2006 07:34 AM ET (US)
i didnt understand...
i already have a classic hidraulic sistem, without engine help...
what difference is between classic and power steering?
isnt the power steering sistem controlled by the oil from the drive wheel?
kingfish posted 12-11-2006 08:14 AM ET (US)
Marco-
I wish I could speak Italian - I think we are not understanding each other.
Both Power Steering and Hydraulic Steering (the latter like Teleflex Seastar) are operated hydraulically with oil pressure.
Power Steering is pressurized with the help of pressure from a pump attached to the motor inside the motor cowling.
Hydraulic Steering is pressurized only by the turning of the steering wheel (helm).
I still don't understand which of the above systems you need help with. If it is Power Steering, I would not recommend using it at all.
John
jimh posted 12-11-2006 09:26 AM ET (US)
I believe all "power steering" systems operate using hydraulic pressure. They reduce the effort of turning the steering wheel by boosting the hydraulic pressure in the steering system. They operate on cues from the manual hydraulic helm pump. A boost pump is inserted into the hydraulic system.
OMC may have been the first to offer such a system on these c.1988 motors. The boost pump was driven directly from the engine by a mechanical linkage, a rubber drive belt.
Teleflex has also offered a "power steering" system for their manual hydraulic steering systems. Their boost pump was driven by an electric motor. The vessel electrical system supplied the power to assist the steering, although this may also have been indirectly derived from the engine via a mechanical link through the motor's battery charging system.
Some newer Mercury motors incorporate a "power steering" system. They also use an electric motor to operate a hydraulic boost pump.
The general benefit of any power steering system is to reduce the effort needed to operate the helm, and to increase the rate of speed at which the actuator responds to helm input.
In a manual hydraulic system there are two elements:
--the helm pump, which supplies hydraulic fluid under pressure, and
--the steering actuator, which responds to hydraulic pressure and flow by moving a steering arm
In a power steering system there is a third component, the boost pump. It is located between the helm pump and the steering actuator. The boost pump adds hydraulic pressure to the actuator side of the system in proportion to hydraulic pressure it receives from the helm pump.
alfa posted 12-11-2006 09:32 AM ET (US)
Marco,
Can you describe the exact items you get ?
part numbers, make and so on so we can really help ?
Alain
davidestel posted 12-17-2006 11:00 AM ET (US)
now in my Boston i have a common hidraulic system without engine help... but it is hard to move the wheel for turn... like a monocable system...
i would like to know if i can use this system with the power steering or not... just this...
seahorse posted 12-17-2006 01:45 PM ET (US)
Most of the time, hard steering complaints are due to the wrong fluid used in the system. If someone added or filled your helm with automotive transmission fluid (ATF), your steering wheel effort will be high. Most steering systems, depending on brand and model, require a special hydraulic oil, the same as used in small airplanes.
Another common problem is a kink in the hose, usually where it exits the transom well, which restricts the oil flow.
Peter posted 12-17-2006 01:51 PM ET (US)
Could also be a stiff steering pivot caused by not being lubricated with fresh and the correct type of grease.
davidestel posted 12-18-2006 07:25 AM ET (US)
ok... understand,
i will try to change the oil fluid... what brand?
so... nobody suggest me to install the powersteering??
ok... better! i will spend that time for fishing! :)

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Author	Topic: Evinrude 225 power steering
davidestel	posted 12-10-2006 12:10 PM ET (US) Hi! i would like to install the power steering sistem on my evinrude 225hp year '88. i bought an used kit on the net... Knows somebody where to find a design or instructions to install it on the engine? thanks Marco
alfa	posted 12-10-2006 12:19 PM ET (US) Is it a Teleflex system ? http://www.seastarsteering.com/ Good luck !
kingfish	posted 12-10-2006 03:07 PM ET (US) Marco- There are two completely separate systems we may be talking about here: one is power steering and one is hydraulic steering. My 1992 Evinrude 225 came with OMC power steering, and it said so right on the cowling. That was a system proprietary to OMC and Evinrude, and consisted of a hydraulic pump under the cowling that ran by belt off the crankshaft of the motor via a pulley underneath the flywheel. Motors like mine with power steering were apparently designed to be used on boats that didn't have hydraulic steering. Or maybe they were an early attempt to provide hydraulic steering when it wasn't all that available for smaller boats. The bearings on my system eventually started to fail, and I wound up removing all related parts of the power steering system from the motor (belt, pump, reservoir, hydraulic lines, etc.) and then replaced the OMC Power Steering cylinder on the front of the motor with a Teleflex Hydraulic cylinder that my existing hydraulic lines from the steering wheel were able to connect directly to with no problem or additional parts. So now I have hydraulic steering, without the power of a belt-driven pump, and it works at least as well and as easily as my original power steering. Which of the systems I just described do you think you are talking about? John
contender	posted 12-10-2006 08:25 PM ET (US) Kingfish is correct, power steering was an OMC 225 under the cowling with a belt. Kingfish is also correct, it worked when it was new but then the bearing gave out. Kingfish hit the nail on the head, took out the power steering and and trash it went to sea star hyd. steering hense no problems...good luck
davidestel	posted 12-11-2006 07:34 AM ET (US) i didnt understand... i already have a classic hidraulic sistem, without engine help... what difference is between classic and power steering? isnt the power steering sistem controlled by the oil from the drive wheel?
kingfish	posted 12-11-2006 08:14 AM ET (US) Marco- I wish I could speak Italian - I think we are not understanding each other. Both Power Steering and Hydraulic Steering (the latter like Teleflex Seastar) are operated hydraulically with oil pressure. Power Steering is pressurized with the help of pressure from a pump attached to the motor inside the motor cowling. Hydraulic Steering is pressurized only by the turning of the steering wheel (helm). I still don't understand which of the above systems you need help with. If it is Power Steering, I would not recommend using it at all. John
jimh	posted 12-11-2006 09:26 AM ET (US) I believe all "power steering" systems operate using hydraulic pressure. They reduce the effort of turning the steering wheel by boosting the hydraulic pressure in the steering system. They operate on cues from the manual hydraulic helm pump. A boost pump is inserted into the hydraulic system. OMC may have been the first to offer such a system on these c.1988 motors. The boost pump was driven directly from the engine by a mechanical linkage, a rubber drive belt. Teleflex has also offered a "power steering" system for their manual hydraulic steering systems. Their boost pump was driven by an electric motor. The vessel electrical system supplied the power to assist the steering, although this may also have been indirectly derived from the engine via a mechanical link through the motor's battery charging system. Some newer Mercury motors incorporate a "power steering" system. They also use an electric motor to operate a hydraulic boost pump. The general benefit of any power steering system is to reduce the effort needed to operate the helm, and to increase the rate of speed at which the actuator responds to helm input. In a manual hydraulic system there are two elements: --the helm pump, which supplies hydraulic fluid under pressure, and --the steering actuator, which responds to hydraulic pressure and flow by moving a steering arm In a power steering system there is a third component, the boost pump. It is located between the helm pump and the steering actuator. The boost pump adds hydraulic pressure to the actuator side of the system in proportion to hydraulic pressure it receives from the helm pump.
alfa	posted 12-11-2006 09:32 AM ET (US) Marco, Can you describe the exact items you get ? part numbers, make and so on so we can really help ? Alain
davidestel	posted 12-17-2006 11:00 AM ET (US) now in my Boston i have a common hidraulic system without engine help... but it is hard to move the wheel for turn... like a monocable system... i would like to know if i can use this system with the power steering or not... just this...
seahorse	posted 12-17-2006 01:45 PM ET (US) Most of the time, hard steering complaints are due to the wrong fluid used in the system. If someone added or filled your helm with automotive transmission fluid (ATF), your steering wheel effort will be high. Most steering systems, depending on brand and model, require a special hydraulic oil, the same as used in small airplanes. Another common problem is a kink in the hose, usually where it exits the transom well, which restricts the oil flow.
Peter	posted 12-17-2006 01:51 PM ET (US) Could also be a stiff steering pivot caused by not being lubricated with fresh and the correct type of grease.
davidestel	posted 12-18-2006 07:25 AM ET (US) ok... understand, i will try to change the oil fluid... what brand? so... nobody suggest me to install the powersteering?? ok... better! i will spend that time for fishing! :)