4. Steering fluid — important Due to the precision operation of our steering systems, Dometic recommends use of SeaStar steering fluid only in our hydraulic steering systems. SeaStar steering systems have been engineered and validated using our proprietary SeaStar hydraulic steering fluid. SeaStar steering fluid is blended with a special additive package that contains anti-foaming and anti-rust agents, anti-oxidants, viscosity stabilizers, corrosion inhibitors, wear additives as well as water emulsification adders that were formulated not to harm or degrade our components. It is highly recommended that SeaStar steering fluid be used to ensure optimum system performance and safety. The system: How it works The system is a two-line system. This makes operation very simple. 1. The steering wheel, which is attached to the helm pump, is rotated in the desired direction (ie: a turn to starboard or clockwise rotation). 2. Steering fluid is pumped out the corresponding port from the rear of the helm into the starboard line and then into the cylinder.
OUTBOARD SYSTEM
INBOARD SYSTEM
HELM STATION
HELM STATION
WHEEL ROTATION
WHEEL ROTATION
DIRECTION OF OIL FLOW
DIRECTION OF OIL FLOW
CYLINDER SHAFT MOVEMENT
CYLINDER BARREL MOVEMENT
TILLER ARM
TILLER ARM
STEERING CYLINDER
STEERING CYLINDER
ENGINE
RUDDER
Figure 2-2.
2-2
EN
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