CILINDRO HIDRAULICO COMPACTO FB 150HP

Function and technical context

This compact double-acting hydraulic cylinder is part of the trim and hydraulic steering system of 150 hp outboard engines, acting as the main actuating element that converts hydraulic pressure into linear displacement force. Its compact design allows it to be integrated into small spaces on the transom without compromising the response capacity or structural robustness of the assembly. Within the hydraulic circuit, it manages both the advance and retreat of the piston thanks to its double-acting configuration, which guarantees precise control of the trim angle and dynamic load compensation in demanding navigation conditions. A cylinder in poor condition causes loss of steering response, uncontrolled drift of the boat or inability to maintain the trim angle, situations that compromise safety on board and engine performance.

When to replace this part?

The most common symptoms of a damaged hydraulic cylinder are the appearance of hydraulic oil leaks at the ends of the rod, progressive or spontaneous lowering of the engine outside the selected trim position, and a soft or irregular response when operating the steering or trim system. It is recommended to inspect the seals and the rod at each seasonal maintenance, paying special attention to the presence of galvanic corrosion or superficial scratches on the cylinder, common in saltwater environments. Replacing the cylinder preventively at the first signs of leakage prevents progressive breakdowns in the hydraulic pump and circuit hoses, the repair of which is considerably more expensive.

Equivalent manufacturer part numbers