Cummins ISX11.9 CM2250 – Service Manual 000-005   Engine Storage – Long Term

General Information

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.

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.

WARNING  Coolant is toxic. Keep away from children and pets. If not reused, dispose of in accordance with local environmental regulations.

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.

• Operate the engine at high idle until the coolant temperature is 70°C [160°F].
• For engines with aftertreatment devices, perform an active regen to ensure that the aftertreatment is clean before putting the engine in storage.
• 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 in order to ensure that the engine preservative oil (Tectyl 910 E or equivalent) is distributed around the engine and its internal components.

CAUTION  DO NOT use fuel system preservative oil on Natural Gas, Propane or Diesel Engines with High Pressure Common Rail Fuel System or Modular Common Rail Fuel System (MCRS).

Skip the following five steps for Natural Gas, Propane or Diesel Engines with High Pressure Common Rail Fuel System or Modular Common Rail Fuel System (MCRS).

• Disconnect the engine fuel supply and fuel injector return lines.
• Fill one container with diesel fuel, and the second container with Nox-Rust™ No.518, or equivalent fuel system preservative oil. The preservative oil must meet Military Specification VV-L-800.
• Put the engine fuel supply and fuel injector return lines in the container that is filled with Diesel fuel and start the engine.
• After ensuring that the engine is running smoothly, quickly transfer the engine fuel supply line to the container containing the fuel system preservative oil (Nox-Rust™ No.518, or equivalent) while leaving the fuel injector return line in the diesel container.
• Operate the engine until the fuel system preservative oil visibly flows out of the fuel injector return line.
• Turn the engine “OFF”
• If you have removed the engine fuel supply and the fuel injector return lines, remove them.
• 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 manifolds.
• 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 preverative oil on all the exposed surfaces that are not painted. 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.
• Remove the exhaust aftertreatment components (if applicable).
• 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.

CAUTION  The engine must be stored in an area that is dry and has uniform temperature.

• The engine must be stored in an area that is dry and has a uniform temperature

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.

• 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 aof 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 injector (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.
  

  NOTE: Skip this step for if the fuel system has been treated with fuel system preservative oil.
  

  NOTE: Using fuel system preservative oil on Natural Gas, Propane or Diesel Engines with High Pressure Common Rail Fuel System or Modular Common Rail Fuel System (MCRS) is prohibited.

• If the fuel system has been treated with fuel system preservative oil, as much of the preservative oil as possible needs to be flushed out of the fuel system prior to attempting to start the engine. Depending on the engines’s fuel system, this can be done by using an external pump to pump clean diesel fuel into the fuel system and removing various fuel lines to flush the fuel system preservative oil out. Upon flushing the fuel system, make sure all fuel lines are securely tightened prior to attempting to start the engine.
• Start the engine.
  

  NOTE: For engines with exhaust aftertreatment components, do not install those components yet. Run the engine for 15 minutes at operating temperature without the exhaust aftertreatment components. This will prevent any of the preservatives from damaging the Diesel Particulate Filter (DPF). There will be active faults during this time, but these fault codes will clear when the aftertreatment is reinstalled.

• 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).