Kamewa CPP 6000mm 5B

Häufige Probleme

• Hydraulic oil leakage at the oil distribution box or shaft seals
• Blade seal wear allowing seawater ingress into the hub
• Servo piston or blade carrier wear causing pitch feedback drift from actual blade angle
• Hub oil contamination by seawater, reducing lubrication effectiveness
• Fretting or corrosion at blade bolts/securing arrangements
• Feedback (pitch indication) system calibration drift over time
• Cavitation erosion on blade tips and leading edges
• Shaft line bearing wear associated with the propeller/shafting arrangement

Prüfliste

• Sample hub oil and test for water contamination
• Verify bridge/engine room pitch indication against the actual blade angle where this can be checked
• Inspect the oil distribution box and shaft seals for leakage
• Inspect blade seals for condition where accessible, and at each drydocking
• Inspect blades for cavitation erosion, pitting, or impact damage
• Check hydraulic system operating pressure and pump condition
• Check shaft line bearing clearances per the planned maintenance system
• Test emergency/local pitch control operation
• Inspect blade securing bolts and pins for corrosion or looseness at drydock

Wartungsintervalle

Typische Intervalle für diese Bauart, keine Herstellerangabe für Ihr Modell. Verbindlich ist das Handbuch des Herstellers.

Typische Verschleißgrenzen

Die Bereiche sind für diese Bauklasse typisch. Maßgeblich sind stets die Herstellerunterlagen zur jeweiligen Seriennummer.

Kritische Ersatzteile

• Blade seal kit
• Oil distribution box / shaft seal kit
• Hydraulic pump repair kit or spare pump
• Hub oil (correct grade)
• Pitch feedback transducer
• Blade O-rings and gasket set

Sicherheit

• High-pressure hydraulic system - depressurise and lock out before any work on the pitch control circuit
• Blades and hub components are heavy - use proper lifting arrangements and certified slings at drydock
• Confined space entry precautions apply when entering the hub/boss area
• Loss of pitch control is a propulsion emergency - confirm emergency/local control procedures are posted and understood by the watchkeeping crew

Klassenbesichtigung

Controllable-pitch propeller systems of this size are normally covered by a class-approved planned maintenance system or continuous machinery survey arrangement; expect class to review hub oil sampling records, pitch feedback calibration records, and blade/seal condition reports, particularly at drydock special surveys, along with confirmation that the emergency/local pitch control means is operable.

Geschätzte Lebensdauer: Blades and the hub structure are generally designed for the vessel's full service life (multiple decades) with periodic seal, bearing and hydraulic component renewal; wear items such as seals and pump components are renewed on a multi-year cycle driven by condition rather than a fixed running-hours figure - confirm renewal intervals against the vessel's class-approved planned maintenance system.