Conservation For Inactive Engines For Long Periods - MWM Acteon Workshop Manual

Operation and Maintenance
Conservation for Inactive Engines for Long Period
MWM engines are produced protected for, at the most, 3 inactivity months under shut shelter.
When the engine is to stay inactive for a long period, it is necessary to follow these cares:
1. Clean the outer parts of the engine.
2. Operate the engine until to reach the operation normal temperature.
3. Drain cooling system and lubricant oil.
4. Fill the radiator with clean water + MWM coolant according to the recommended proportion.
5. Fill up the carter with protective oil SAE 20 W 20.
6. Drain fuel system (reservoir, low pressure system).
7. Operate the engine for 15 minutes at 2/3 of the nominal speed, without load, using a mixture of fuel with 15% of
the protective oil SAE 20 W 20.
8. Drain fluid from cooling system and oil from carter. The fuel mixture can stay in the system.
9. Remove valves cover from cylinder heads and spray protective oil on the springs and rocker arms. Reinstall
covers.
10. Remove fuel injectors and spray 10 to 15 cm³ of protective oil in each cylinder with the respective piston at
bottom-dead-centre position. Turn crankshaft a complete turn and reinstall fuel injectors.
11. Apply protective grease on articulations.
12. Apply protective oil on machined surfaces.
13. Remove belt(s).
14. Seal all the holes of the engine, to avoid dust and water penetration.
Remarks:
• Renew the engine conservation procedure after each 8 months of inactivity.
• In case of new brand engines, do not consider items 1, 2 and 3.
Preparation of the Engine to Return to Service
Before operating an engine which stayed inactive for a long period, follow these procedures:
1. Clean the outer parts of the engine.
2. Fill cooling system with clean water and MWM coolant in the recommended proportion.
3. Change engine lubricant oil filter.
4. Fill the carter with new lubricant oil according recommendation.
5. Install belt(s) and adjust tension.
6. Remove valves cover and lubricate rocker arms with engine oil. Reinstall covers.
7. Drain the fuel mixture from the reservoir and fill with new fuel.
8. Change fuel filter.
9.612.0.006.7160 - 05/04