12V23/30H-GS-50Hz
The MAN 12V23/30H-GS-50Hz is a V‑12, 2 220 kW auxiliary diesel engine coupled to a 2 109 kW (2 636 kVA) generator set, designed for high‑power shipboard electricity generation with dual‑fuel capability (HFO/MDO or DF).
Engine Specifications
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Visual inspection through scavenge ports: check rings for freedom of movement, inspect upper liners for black spots; chemically clean if required
Check outside micrometer around and along pin for conicity/oversize; document ridge >5 µm and arrange polishing/undercutting
Inspectors check: exhaust gas quality (soot content), injection noise (crackling sound with coking), injection pressure build-up in test stand
Visual inspection of valve cone/seat for scratches and erosion patterns; leak test with helium/nitrogen; grey lapping print must be complete
Check copper coating on bearing shells with surface roughness gauge; curve gauge for journal profiles; arrange undercutting for grooves >0.1 mm or ridge >50 µm
Type-general inspection and maintenance points for this equipment category — not model-specific.
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