Wartsila RT-flex50-D - Maintenance Schedule; Inspection and Overhaul Intervals

Maintenance
0380−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
1/ 7
Group Component Work to be carried out Intervals
0
Lubricating oil − Laboratory analysis 3000 Op. h (operating
hours)
Cooling water − Determine quality, concentration of inhibitor and
pH value
(follow instructions of inhibitor manufacturer)
weekly
1
1112−1 Bedplate − Check pre-tension of foundation bolts,
first time after 1500 Op. h
12 000 Op. h
Crankcase − Visual examination
100 Op. h after overhaul works
1500−3000 Op. h
1132−2 Main bearing − Remove bearing upper half for inspection,
random inspection every 12 000 Op. h
according to
classification society
− Remove bottom bearing shell for inspection acc. to class. society
1203−1 Thrust bearing − Check axial and radial clearances 6000−8000 Op. h
− Check bottom drain for free passage 6000−8000 Op. h
1224−1 − Remove thrust bearing pads for inspection acc. to class. society
1715−1 Engine stays with
friction shims
− Check pre-tension of waisted studs,
first time after sea trial
6000−8000 Op. h
1903−1 Tie rod − Check pre-tension, if necessary re-tension
first time after one year
24 000−30 000 Op. h
2
2124−1 Cylinder liner − Establish wear in bore (in fitted condition) at every piston removal
2124−2 − Remove cylinder liner as required
− Replace O-rings at every removal
− Replace (soft iron) joint ring between cylinder liner
and cylinder cover
at every piston removal
− Water guide jacket, replace O-rings at every piston removal
− Check condition of antipolishing ring at every piston removal
2124−3 − Grind off wear ridge in bore at every piston removal
− Refinish lubricating grooves as required
− Clean scavenge ports and refinish their edges as required
50−D / 2010
M
aintenance Schedule
I
nspection and Overhaul Intervals (Guidelines)