 CAUTION
After 24 months in storage, the engine cooling system must be drained and flushed with a suitable solvent or a hot, lightweight mineral oil. Repeat flushing procedure a second time before being put back into service.
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 WARNING
Do not remove the pressure cap from a hot engine. Wait until the coolant temperature is below 50°C [120°F] before removing the pressure cap. Heated coolant spray or steam can cause personal injury.
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WARNING
Coolant is toxic. Keep away from children and pets. If not reused, dispose of in accordance with local environmental regulations.
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This procedure describes the proper method for the long-term (more than 6 months) storage of an engine that is currently in running condition. This procedure applies to this engine either remaining in chassis – or being removed out of chassis upon completion of the steps below.
CAUTION
DO NO use fuel system preservative oil on Natural Gas or Propane Engines.
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- Operate the engine at high idle until the coolant temperature is 70°C [160°F].
- Turn the engine off.
- Drain the oil.
- Install the drain plugs.
- Fill the engine to the high mark using Tectyl™ 910 or equivalent engine preservative oil. This will provide long term engine rust protection. The oil must meet military specification MIL-PRF-21260, Type P-10, Grade 2, SAE 30.
- Let the engine run for approximately 25 minutes at low idle in order to ensure that the engine preservative oil (Tectyl 910 E or equivalent) is distributed around the engine and its internal components.
- Turn the engine “OFF”
- Drain all the preservative oil from the engine oil pan sump, the air compressor (if applicable), and all the fuel filters and oil filters.
- Install the drain plugs.
- If the engine is being stored as a loose engine, drain the engine coolant and cover all cooling system openings with plastic and tape.
- If the engine is not being removed from chassis and the engine has an extended life coolant with rust inhibitor, then coolant does NOT need to be drained.
- If the engine will remain in storage for over 24 months, the engine cooling system must be drained and flushed with a suitable solvent or a hot, lightweight mineral oil. Repeat after each 24 month period.
- Remove the intake and exhaust manifolds.
- Spray preservative oil into the intake and exhaust ports in the cylinder heads and in the exhaust manifolds only. Do NOT use preservative oil on the intake manifold or any fuel system components as this may permanently damage sensors or valves.
- Spray preservative oil in the inlet port on the air compressor (if applicable)
- Remove the rocker lever covers.
- Spray the rocker levers, the valve stems, the springs, the valve guides, the crossheads, and the push rods with preservative oil.
- Install the rocker lever covers, intake and exhaust manifolds.
- Brush or spray the preservative oil on all the exposed metal surfaces that are not painted. Preservative oil should NOT be applied to any plastic, rubber, or similar surfaces. Make sure to coat the flywheel, flywheel housing and all other unpainted machined surfaces with this preservative oil. Use a rust preservative oil compound that meets military specification MIL-C-16173C, type P-2, Grade 1 or 2.
- For components containing exposed bearings that are not easily accessible e.g. Fan Hubs, remove the component to aid access. Brush or spray preservative oil on all surfaces that are not painted and refit the component. Use a rust preservative oil compound that meets military specification, MIL-C-16173C, type P-2, Grade 1 or 2
- Cover all the openings (engine and components) with heavy paper and tape to prevent dirt and moisture from entering the engine. Cover the entire engine with plastic.
- Put a warning tag on the engine. The tag must indicate:
- Do not operate the engine.
- Do not bar the crankshaft.
- The engine has been treated with preservatives.
- The coolant has been removed.
- The date of treatment.
- The date of the 6 week inspection if required.
CAUTION
The engine must be stored in an area that is dry and has uniform temperature.
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- Remove any accessory drive belts to prevent localized stretching and deformation.
- If the engine can be stored inside a designated storage facility isolated from the external environment , ignore the following step.
- Excluding the crankshaft, ensure that all external dynamic engine components are rotated every 6 weeks. Ensure parts are free from corrosion, debris and water ingress. Record and date this on the engine tag created.
NOTE:
To remove the engine from long term storage, follow the following steps:
CAUTION
To reduce the possibility of personal injury, avoid direct contact of hot oil with your skin.
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- Flush the engine preservative oil out of the engine by removing the plug from the main engine oil rifle and pumping a hot, lightweight mineral oil through it. Make sure that the engine crankshaft is barred at least three to four revolutions during this flushing procedure.
- Drain all the mineral oil that was used to flush the engine clean of the engine preservative oil.
- Install the drain plugs.
- Install new oil, fuel and coolant filters.
- Fill the engine to the high mark with engine oil.
- If the engine has been in storage for less than 24 months and if the cooling system was drained, fill the cooling system with coolant. Refer to Procedure 018-004(Coolant Recommendations/Specifications) in Section V for antifreeze, water, and SCA specifications.
- If the engine has been in storage for 24 months, every 24 months the engine cooling system must be drained and flushed with a suitable solvent or a hot, lightweight mineral oil. Fill the cooling system with coolant. Refer to Procedure 018-004(Coolant Recommendations/Specifications) in Section V for antifreeze, water, and SCA specifications.
- If the engine has been in storage for less than 24 months and the engine has an extended life coolant with a rust inhibitor, drain the cooling system. Fill the cooling system with coolant. Refer to Procedure 018-004(Coolant Recommendations/Specifications) in Section V for antifreeze, water, and SCA specifications.
- Adjust the engine brake (if applicable) and valve clearances. Refer to the Overhead Set procedure in the corresponding Base Troubleshooting and Repair Manual or Service Manual for the engine being serviced.
- Tighten the intake and exhaust manifold mounting capscrews.
- Prime the lubricating system.
- Reinstall any accessory drive belts that were removed.
- Replace all spark plugs. Refer to the Spark Plugs procedure in the corresponding Base Troubleshooting and Repair Manual or Service Manual for engine being serviced.
- Make sure all fuel lines are securely tightened and all fuel shutoff valves are open prior to attempting to start the engine.
- Start the engine.
- Note that if might take multiple cranking attempts to start the engine. Do not crank the engine more than 30 seconds at a time as this might cause the starter to overheat and fail.
- Note that the engine might run rough until the fuel system is completely primed or until all residual fuel system preservative oil is completely flushed out of the fuel system (if the fuel has been treated with fuel system preservative oil).
- Install the exhaust aftertreatment components (if applicable).
- Force an active regeneration (if applicable).
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