Overhaul Intervals And Expected Lifetimes; Engine Storage - WÄRTSILÄ WÄRTSILÄ 20 Product Manual

Wärtsilä 20 Product Guide
4.4

Overhaul intervals and expected lifetimes

The following overhaul intervals and lifetimes are for guidance only. Actual figures will be
different depending on service conditions. Expected component lifetimes have been adjusted
to match overhaul intervals.
In this list HFO is based on HFO2 specification stated in the chapter 6.. Fuel Oil System.
Table 4-1
Component
Piston crown
Piston rings
Cylinder liner
Cylinder head
Inlet valve
Exhaust valve
Injection nozzle
Injection element
Main bearing
Big end bearing
4.5

Engine storage

At delivery the engine is provided with VCI coating and a tarpaulin. For storage longer than 3
months please contact Wärtsilä Finland Oy.
Wärtsilä 20 Product Guide - a13 - 6 September 2016
Time between overhauls and expected component lifetimes
HFO
Time between overhauls [h]
10000
10000
10000
10000
10000
10000
2000
10000
10000
10000
4. Description of the Engine
MDF HFO
Expected component lifetimes [h]
20000 30000
20000 10000
20000 40000
20000 50000
20000 30000
20000 20000
2000 4000
20000 20000
20000 30000
20000 10000
MDF
40000
20000
60000
60000
40000
40000
4000
40000
40000
20000
4-5