Expected Overhaul Intervals And Life Times; Engine Storage - Wartsila 31 Product Manual

Wärtsilä 31 Product Guide
4.3

Expected overhaul intervals and life times

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 .
4.3.1 Time Between Overhaul and Expected Life Time
Table 4-1
Component
Piston
Piston rings
Cylinder liner
Cylinder head
Inlet valve
Exhaust valve
Main bearing
Big end bearing
Intermediate gear
bearings
Balancing shaft
bearings
Injection valve
(wear parts)
High Pressure fuel
pump
4.4

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 31 Product Guide - a1 - 18 October 2016
Time Between Overhaul and Expected Life Time
Time between inspection or overhaul
HFO
24000
24000
24000
24000
24000
24000
24000
24000
64000
32000
8000
24000
1) Achieved life times very much depend on the operating conditions, average
loading of the engine, fuel quality used, fuel handling systems, performance of
maintenance etc.
(h)
LFO
32000
32000
32000
32000 48000..96000
32000
32000
32000
32000
64000
32000
8000
24000
NOTE
4. Description of the Engine
Expected life time (h)
HFO LFO
Min. 72000 Min. 96000
24000 32000
96000 128000
64000...128000
24000 32000
24000 32000
48000 64000
24000 32000
64000 64000
32000 32000
NA NA
24000 24000
1)
4-5