WÄRTSILÄ RT-flex50-D, Maintenance Manual

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Maintenance
0380−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
4/ 7
Group Component Work to be carried out Intervals
Starting air
shut-off valve − Vent after each manoeuvring
period
4325−1 − Dismantle, clean and check
(particularly seat, springs and seal rings)
− Overhaul common start valve
24 000−36 000 Op. h
18 000 Op. h
Control air filter − Drain filter
− Clean filter
weekly
6000 Op. h
5
5552−1 Supply unit − Replace servo oil pump either with new one or a
pump overhauled by a Wärtsilä workshop
24 000 Op. h
− Check pinion and driving wheels to servo oil
pump drive
3000 Op. h
− Check bearing bushes to pinion 24 000 Op. h
5552−2 − Camshaft, check running surface of cams,
rollers & roller guides (first time after 500 Op. h)
3000 Op. h
− Camshaft, check bearing clearances at random 12 000 Op. h
− Camshaft, check thrust bearing clearances 36 000 Op. h
5556−1 Fuel pump − Replace O-rings in valve block 18 000 Op. h
− Random visual check of plunger & cylinder,
roller and roller guide
18 000 Op. h
5562−1 Fuel pressure
control valve
(PCV) − Check shut-down function
(see Operating Manual 4003−1)
3000 Op. h
− Function check
(see Operating Manual 5562−1)
6000 Op. h
− General overhaul only necessary when
PCV fails
− Replace oil filter 18 000 Op. h
5562−2 Fuel
overpressure
safety valve − Function check on test bench 18 000 Op. h
5564−1 Injection control
unit − Replace unit (incl. rail valves) either with new
one or a unit overhauled by a Wärtsilä
workshop
24 000−36 000 Op. h
− Replace filter 18 000 Op. h
Servo oil rail − Replace hoses 18 000−30 000 Op. h
5610−1 Pressure
reducing valve − Checking gas (nitrogen) pre-charge pressure:
the same criteria apply as specified for 7218−1
2012-07
Inspection and Overhaul Intervals (Guidelines)