BOMBA HIDRAULICA FRONTAL 25cc

Function and technical context

This 25 cc front hydraulic pump is part of the hydraulic transmission system in outboard engines, being responsible for generating and maintaining the necessary pressure in the control circuit for the correct operation of the gear change. Powered from the front of the engine, it transforms mechanical energy into hydraulic flow that powers the clutch and reverse gear control actuators. A failure in this pump immediately results in a loss of pressure in the hydraulic circuit, which can prevent gear engagement, cause clutch slippage or leave the boat without controlled propulsion. Its correct operation is, therefore, critical for the safety and maneuverability of the vessel.

When to replace this part?

The most common symptoms of wear in a hydraulic transmission pump are: difficulty or inability to shift into gear, sudden or delayed changes, pressure drop in the hydraulic circuit and possible oil leaks through the pump seal. It is recommended to check its condition during each seasonal maintenance and pay special attention if the hydraulic oil appears contaminated or with metallic particles, an unequivocal sign of internal wear. Replacing the pump preventively at the first symptoms avoids major breakdowns in the transmission box that can leave the boat immobilized at sea.

Equivalent manufacturer part numbers