Mitsubishi S12U Operation & Maintenance Manual page 63

Table 5-2 Periodic maintenance chart for emergency engine (2 / 5)
Service
interval
After 1 year
or 500 ser-
vice hours, Engine oil
whichever
comes first
Every year
Conducting maintenance operation
Valve clearance
Camshaft and tappets
Damper
Magnetic pickup
Fuel tank
Fuel injection nozzles
Fuel injection timing
Coolant
Exhaust pipes and exhaust muffler
Pre-cleaner
Air cleaner element
Protection
device
After 2 years Engine oil
or 500 ser-
vice hours,
Oil filter and bypass oil filter
whichever
comes first
After 2 years Fuel filters
or 1500 ser- (center-bolt and cartridge)
vice hours,
whichever
Fuel filter (wire-element)
comes first
Service item
Increasing coolant
temperature,
decreasing oil pres-
sure, overspeed
and emergency
stop device
Chapter 5
PERIODIC MAINTENANCE CHART
Service contents
Analyze engine oil properties.
(according to engine oil analysis service)
Operate the engine under no load for 2
hours (more than 1/2 load).
Inspect starting property, exhaust color,
abnormal vibrations, abnormal sounds and
abnormal odors.
Inspect displayed value of each gage (such
as oil pressure gage, water temperature
gage, oil temperature gage, exhaust tem-
perature and rotating speed gage).
Inspect and adjust (also inspect inside of
rocker chamber).
Inspect.
Check temperature with thermo label and
check for silicon oil leakage.
Inspect clearance with the flywheel, attach-
ment of foreign items on the tip, mounting
nut tightness, an open-circuit and connector
disconnection.
Drain water.
Change nozzle tips and adjust pressure.
Inspect and adjust.
Inspect LLC concentration.
Inspect and drain water.
Clean.
Clean and inspect.
Inspect operation.
Change.
Change.
Change.
Clean inside.
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