SPJ 57
Schottel SPJ 57 — PumpJet - Light to medium propulsion.
Components & Design
Component data being added…
Technical Data
Related equipment 10
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Common failures & inspection points
Visual dive inspection or ultrasonic thickness measurement of blade leading edges for erosion, pitting, or cavitation damage indicative of operating outside design envelope
Dismantle controllable-pitch propeller hub, measure all bearing clearances and roughness, check for wear patterns; exchange all internal seals and gaskets
Visual inspection of sacrificial anodes and protective coatings; replace zinc anodes and check hull attachment for galvanic isolation
Verify shaftline re-certification, check flexible coupling bolts for looseness, measure runout and eccentricity of propeller hub to detect misalignment
Sample hydraulic oil for water content and particle count; inspect seal condition around hub oil passages for weeping or active leakage
Type-general inspection and maintenance points for this equipment category — not model-specific.
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