Chuck-
This is a frequent question.
The hydraulic steering is a great upgrade, and easy to install for someone with mechanical skills. The hardest part is removing the old cable, which can be done with a pneumatic or electric cut-off tool, or probably bolt cutters. The cable can actually be slid out, but the sheath can be more difficult, and is easier to remove in sections after cutting.
Installing the new helm, hydraulic hoses, and steering cylinder at the rear is straightforward and simple. The new system must be filled and bled, but it's an easy job if you're careful and don't let it get messy.
The choice of which system to use, such a Teleflex BayStar Versus SeaStar, depends on your intended use, with the nod going to the SeaStar if you're planning on adding an autopilot now or eventually.
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Lots has been written on this subject, so look on the
Motor Control Systems section of the Library Forums.
The last four topics are right on the subject with the topics-
Again With the Hydraulic Steering Upgrade
Hydraulic Steering Upgrade
Steering upgrade cost
hydraulic steering --dual helm
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Good Luck with your upgrade!
Joe. :teeth :thup