A. Overhaul main engine and gearbox:
Replace rotor bearing of main engine
Replace mechanical shaft seal and oil seal of main engine rotor
Replace main engine rotor adjusting pad
Replace rotor gasket of main engine
Replace main engine rotor assembly pad
Adjust the precision clearance of main engine rotor
Replace the gearbox main/auxiliary rotary bearings
Replace gear box mechanical shaft seal and oil seal
Adjust precision clearance of gearbox
Adjust precision clearance of gearbox gears
B. Add butter to motor bearings
C. Check or replace the coupling
D. Clean and maintain the air cooler
E. Clean and maintain the oil cooler
F. Check or replace the oil stop valve
G. Check or replace the unloading valve
H. Clean water and gas separator
I, change the oil
J. Clean each heat dissipation surface of the unit
K. Check the working condition of each electrical component
L. Check each protection function and its set value
M. Check or replace the pipelines
N. Check the contact of electrical components
