WDU 20000
Rapp Hydema WDU 20000 — Hydraulic Drive Unit - Mooring Winches.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Verify brake holding at 60-80% SDMBL first layer per ISO 3730; execute brake render test to confirm slippage at rated design load
Inspect for damage, chafing, kinks; verify lubrication with oil-based compounds applied across full rope length; assess breaking strength reduction
Monitor operating pressure versus nameplate specifications; check all seals, connections and motor housing for hydraulic fluid leakage; calibrate pressure gauges
Inspect winch drum for cracks, deformation, surface wear; verify bolt/pin/bearing tightness; assess zinc shot-blast coating condition for oxidation
Confirm annual load test completion and records; review maintenance log for overhauls, repairs, line replacements; verify SOLAS II-1/3-8 compliance documentation
Type-general inspection and maintenance points for this equipment category — not model-specific.
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