Mitsubishi S12U Operation & Maintenance Manual page 60

Chapter 5
PERIODIC MAINTENANCE CHART
Table 5-1 Periodic maintenance chart for engine in regular use (4 / 5)
Service
interval
Every 12000
service
hours
Fuel system
Lubricating
system
Cooling
system
Inlet and
exhaust
systems
Air starter
system
Protection
device
Flexible hoses
5-6
Service item
Fuel control
linkage
Fuel injection
pump
Fuel feed pump
Fuel injection
pipes
Fuel injection
timing
Fuel pressure
regulator valve
Fuel system
accumulator
Fuel pipes
Oil pump
Oil cooler
Regulator valve
Oil pipes
Water pump
Coolant pipes
Turbocharger
Air cooler
Air cooler cover
Air inlet pipes
Exhaust pipes
Exhaust duct
Starting valve
Air pipes
Air tank
Distributor
Increasing cool-
ant tempera-
ture,
decreasing oil
pressure, over-
speed and
emergency
stop device
Service contents
Change ball joints and ball bearings.
Disassembe and maintain, and change deflec-
tors and O-rings.
Change oil seals and O-rings.
Change.
Inspect and adjust.
Inspect.
Change.
Change O-rings and sealing washers.
Change bushings.
Inspect and clean element.
Disassemble and maintain.
Change O-rings and gaskets.
Change bearings.
Change O-rings.
Remove carbon deposits and change seal rings,
bearings and expendable parts.
Clean element.
Change gaskets.
Change O-rings.
Change gaskets, bolts and nuts.
Change V-clamps.
Inspect, lap and change O-rings and gaskets.
Change gaskets.
Inspect safety valve operation.
Change valve, shaft, bushings, pins and gaskets.
Inspect operation.
Change.
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