Maintenance0380−1/A1
Winterthur Gas & Diesel Ltd.
4/ 11
Group Component Procedure Intervals and Service
Life (operation hours)
2751−1
to
Exhaust valve − General inspection of valve housing, valve
spindle and valve seat (when the exhaust
valve is not disassembled)
At each piston removal
2751−4 − Do a check of the condition and worn areas of
the valve spindle (if necessary, grind the valve
seat)
36000 (Initial
inspection at 18000)
− Valve drive: Do a check of the piston seal ring /
air spring and rod seal ring / guide bush
36000 (Initial
inspection at 18000)
− Do a check of the condition and worn areas of
the valve seat
36000 (Initial
inspection at 18000)
− Do a random check of the valve drive, outer
and inner pistons, damper, thrust piece
18000
− Estimated service life: Exhaust valve spindle
(Nimonic)
108000
(re-manufacture as
necessary)
− Exhaust valve seat 72000 (re-manufacture
as necessary)
2790−1 Pilot injection
valve
− Do an external check for tightness
After engine stop
before a longer
standstill
− Replace the nozzle spare parts set and
perform function check
12000
− Replace the O−rings and sealing rings every time when the
pilot injector is
removed from the
holder
− Replace the pilot injection valve complete 24000
− Replace the pre-chamber 18000
3
3103−1 Crankshaft − Measure the crank deflection. Always if the
ship grounded and after each docking
6000
3130−1 Torsional
vibration
damper
− Get a silicon oil sample from the viscous
vibration damper (use the results of the 1
st
sample. The manufacturer will make a decision
about the intervals to get more samples)
First time after 15000
to 18000
3130−2 − Do an inspection and disassemble the
vibration damper
In accordance with
instructions of damper
manufacturer
3140−1 Axial damper − Disassemble and do an inspection 36000 to 48000
3206−1 Turning gear − Inspection interval of turning gear In accordance with the
instructions of the
turning gear
manufacturer
Inspection and Overhaul Intervals (Guidelines)
2020
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