THICK t:1.5mm 61N-45587-00-15

Function and technical context

This 1.5 mm thick supplement disc is part of the engine transmission and closure system, acting as a sealing and compensation element in the gearbox assembly. Its mission is to maintain correct internal pressure, prevent transmission fluid leaks, and ensure precise alignment of rotating components. Wear or deterioration of this part causes fluid losses, reduced propulsion power and, in advanced cases, water entry that would compromise the integrity of the engine.

When to replace this part?

Inspect this disc during each seasonal inspection, especially if you notice fluid leaks around the transmission area, abnormal shaft vibrations, or a progressive reduction in throttle response. Although there is no fixed replacement interval, it is advisable to check its thickness and general condition every 200-300 hours of operation in intensive use engines. Preventive replacement during major maintenance prevents costly breakdowns in navigation and ensures optimal performance of the propeller.

Equivalent manufacturer part numbers