Decommissioning and Recommissioning
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Carefully read the Operating Instructions before starting any work!
This is especially valid for the chapter on General Safety Instructions
and the safety instructions in each of the chapters.
10.4 Recommissioning of Decommissioned Engines
10.4.1 Commissioning of Preserved Engines according to MAN-Werknorm M 3059
1. Remove external preservation. Never use a high pressure cleaner for this.
2. Remove caps from intake and exhaust openings.
3. Check cooling system; add antifreeze according to the Fluids and Lubricants list (see “Fluids and Lubric
ants ..."); check concentration and correct.
4. Check engine oil level and add fresh approved engine oil if necessary.
5. Check the operation of the monitoring and emergency shut off equipment.
6. Check condition and proper installation of elastic fasteners, such as V-belts, coolant hoses and charge
air hoses. Retighten if necessary.
7. Rotate engine with gas supply turned off until oil pressure builds up. Operate starter no more than 12
seconds for this.
8. Open gas supply and start engine. After engine is running, operate engine above idle speed to avoid
insufficient lubrication of the cylinder liners.
9. Check engine for leaks, unusual noises and observe the oil pressure and all temperatures. Increase en
gine speed in steps.
10.After a max. of 25 operating hours, drain preservation oil from engine and change oil filter; fill engine
with fresh approve engine oil.
10.4.2 Commissioning of Non-Preserved Engines
In addition to the work steps for a preserved engine, the commissioning of a non-preserved engine requires
the following extra work depending on the possible nonuse damages.
1. Check combustion chambers with an endoscope, to do this, remove/install spark plugs.
Check valve for easy movement; check valve clearance and adjust if necessary.
Replace any damaged/corroded parts.
2. Drain old oil from engine and change oil filter. Fill engine with fresh approved engine oil.
3. Check cooling system for corrosion; check coolant for proper concentration; if in doubt, change coolant.
Before adding new coolant , clean coolant chambers and remove/install coolant pump and thermostat if
necessary; replace the slide ring seal of the coolant pump and thermostat elements; pressure test cool
ing system.
4. Check clean air system, air filter and turbocharger for dirt and corrosion. Clean or repair if necessary.
5. Clean/check/replace gas filter.
