TP-6196 10/0926 Section 2 Scheduled Maintenance
2.8 S torage Procedure
Perform the following storage procedure before taking a
generator set out of service for three months or longer.
Follow the engine manufacturer’s recommendations, if
available, for fuel system and internal engine
component storage.
2.8.1 Lubricating System
Prepare the engine lubricating system for storage as
follows:
1. Run the generator set for a minimum of 30 minutes
to bring it to normal operating temperature.
2. Stop the generator set.
3. With the engine still warm, drain the oil from the
crankcase.
4. Remove and replace the oil filter.
5. Refill the crankcase with oil suited to the climate.
6. Run the generator set for two minutes to distribute
the clean oil.
7. Stop the generator set.
8. Check the oil level and adjust, if needed.
2.8.2 Fuel System
Prepare the fuel system for storage as follows:
1. Start the generator set.
2. With the generator set running, shut off the gas
supply.
3. Run the generator set until the engine stops.
4. Place the generator set master switch in the OFF/
RESET position.
2.8.3 Internal Engine Components
(Gas/Gasoline-Fueled Engines)
If you have access to a fogging agent or SAE 10 oil,
prepare the pistons and cylinders for storage as follows:
1. While the engine is running, spray a fogging agent
or SA E 10 engine oil into the air intake for about two
minutes until the engine stops.
2. Place the generator set master switch in the OFF/
RESET position.
If a fogging agent is not available perform the following:
1. Remove the spark plugs.
2. Pour one tablespoon of engine oil into each spark
plug hole. Install the spark plugs and ground the
spark plug leads. Do not connect the leads to the
plugs.
3. Toggle the generator set master switch to crank the
engine two or three revolutions to lubricate the
cylinders.
2.8.4 Exterior
Prepare the exterior for storage as follows:
1. Clean the exterior surface of the generator set.
2. Seal all engine openings except for the air intake
with nonabsorbent adhesive tape.
3. To prevent impurities from entering the air intake
and to allow moisture to escape from the engine,
secure a cloth over the air intake.
4. Mask electrical connections.
5. Spread a light film of oil over unpainted metallic
surfaces to inhibit rust and corrosion.
2.8.5 Battery
Perform battery storage after all other storage
procedures.
1. Place the generator set master switch in the OFF/
RESET position.
2. Disconnect the battery(ies), negative (--) lead first.
3. Clean the battery. Refer to 2.7, Battery, for the
battery cleaning procedure.
4. Place the battery in a cool, dry location.
5. Connect the battery to a float/equalize battery
charger or charge it monthly with a trickle battery
charger. Refer to the battery charger
manufacturer’s recommendations.
Maintain a full charge to extend battery life.
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