MAN Maintenance

Maintenance Schedule

Service based on operating hours

After … hours of operationM1M2M3M4M5M6
After … hours of operationM1M2M3M4M5M6
20-60 or after commissioningXXX
200XXXX
400*XXXXXX
600XXXX
800XXXXXX
1000XXXX
1200XXXXX
1400XXXX
1600XXXXXX
1800XXXX
2000XXXXX
2200XXXX
2400XXXXXX
2600XXXX
2800XXXXX
3000XXXX
3200XXXXXX
3400XXXX
3600XXXXX
3800XXXX
4000XXXXXX

* Retighten cylinder head bolts

The following work is necessary at chronological intervals regardless of hours clocked:
Interval M1M2M3M4A1A2M6
Interval M1M2M3M4A1A2M6
YearlyXXXXX
2 YearsXX
4 yearsXX

 

Service Types

M1 Checking
  • Engine exterior for loss of oil and coolant *1)
  • Coolant level
  • Concentration of antifreeze / anti-corrosion agents
  • Engine oil level / gearbox oil level *1)
  • Engine alarms
  • Functioning of instruments *1)
  • Coolant hoses for leaks
  • Fuel lines for leaks
  • V-belt tension, retightening, if necessary, V-belts
  • Condition of impeller
  • Water hose clamps, pipe connections and bolts for security, retightening, if necessary
  • Alignment of the shaft system (In the event of abnormal vibrations, since the elastic engine mounts may have settled.)
M2 Cleaning
  • Fuel pre-filter
  • Draining water from auxiliary fuel filter
M3 Changing
  • Fuel filter cartridges *3)
M4 Changing
  • Engine oil
  • Engine oil filter cartridge
  • Filter element of crankcase breather
  • Air filter
M5 Checking / Setting
  • Valve clearance
M6 Trial Run
  • Engine speed test with boat under full load *3)
A1 Changing
  • Both valve caps on expansion tank
Cleaning
  • Intercooler / charge-air pipes / turbocharger
  • Heat exchanger (pipe cluster)
A2 Changing
  • Coolant
  • All hoses (e.g. fuel supply and return lines, gearbox oil cooler)

*1) Daily visual checks should be carried out by the captain

*2) Fuel filters will need changing more frequently if contamination is present in the fuel system

*3) Full load = Water and fuel tanks are filled, boat equipment complete, including dinghy

When the respective number of operating hours has been reached, the maintenance work M1 to M6 is to be carried out by a MAN-authorized service center.

Jobs A1 and A2 must be performed, at the intervals listed above, regardless of the operating hours.