IHI NIIGATA MG(L)26HLX, Instruction Manual

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SECTION ２ - OPERATING INSTRUCTION
2.6 INSPECTION AND CARE OF
ENGINE DURING NORMAL OPERATING
２－６－０５
- Cylinder pressures - Combustion pressures should be checked every 500 hours as
outlined in the Maintenance Section, or whenever erratic performance is encountered.
Pressures should not vary from the shipping test values more that 0.49MPa in either
the full-load or idle condition.
Low pressure within a cylinder is usually the result of a malfunctioning injector.
The valve should be removed and bench-checked as outlined in the Maintenance
section.
- Operate the emergency stop device every month and confirm that it operates normally.
If air leaks from the piping, fittings, or flexible hose to the air cylinder, the emergency
stop device may not be able to stop the engine. If an air leak is found during the
inspection, take measures to stop the leak.
Engine operation to avoid the critical torsional vibration:
You should operate the engine to avoid immediately the barred speed range written on
torsional vibration calculation sheets.