4.4 Overhaul intervals and expected life times
The following overhaul intervals and lifetimes are for guidance only. Achievable lifetimes depend
on operating conditions, average loading of the engine, fuel quality used, fuel handling system,
performance of maintenance etc.
Table 4-1 Time between inspection or overhaul and expected lifetime [h]
(DAAE009253B)
Expected lifetime (h)Maintenance interval (h)Component
Twin pump fuel injection
6 0006 000- Injection nozzle
24 00012 000- Injection pump element
60 00012 000Cylinder head
36 000-- Inlet valve seat
24 000-- Inlet valve, guide and rotator
36 000-- Exhaust valve seat
24 000-- Exhaust valve, guide and rotator
48 000-Piston crown, including one reconditioning
60 000-Piston skirt
-12 000- Piston skirt/crown dismantling one
-24 000- Piston skirt/crown dismantling all
12 00012 000Piston rings
60 00012 000Cylinder liner
12 000-Anti-polishing ring
60 00012 000Gudgeon pin (inspection)
36 00012 000Gudgeon pin bearing (inspection)
36 000-Big end bearing
-12 000- Big end bearing, inspection of one
-36 000- Big end bearing, replacement of all
36 000-Main bearing
-18 000- Main bearing, inspection of one
-36 000- Main bearing, replacement of all
60 000-Camshaft bearing
-36 000- Camshaft bearing, inspection of one
-60 000- Camshaft bearing, replacement of all
-12 000Turbocharger, inspection and cleaning
36 0006 000Charger air cooler
60 000-Resilient mounting, rubber element
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 46F Product Guide - a19 - 1 December 2017 4-7
4. Description of the EngineWärtsilä 46F Product Guide
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