TP-6694 7/18 75Section 3 Scheduled Maintenance
Servicing the generator set when it is operating. Exposed
moving parts will cause severe injury or death. Keep
hands, feet, hair, clothing, and test leads away from the belts
and pulleys when the generator set is running. Replace
guards, screens, and covers before operating the generator
set.
3.11.1 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.
3.11.2 Cooling System
Prepare the cooling system for storage as follows:
1. Check the coolant freeze protection using a
coolant tester.
2. Add or replace coolant as necessary to ensure
adequate freezing protection. Use the guidelines
included in the engine operation manual.
3. Run the generator set for 30 minutes to redistribute
added coolant.
3.11.3 Fuel System
Prepare the fuel system for storage as follows:
Diesel-Fueled Engines
1. Fill the fuel tank with #2 diesel fuel.
2. Condition the fuel system with compatible
additives to control microbial growth.
3. Change the fuel filter/separator and bleed the fuel
system. See the engine owner’s manual.
Gaseous-Fueled Engines
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. Stop the generator set.
3.11.4 Internal Engine Components
(Gaseous-Fueled Engines)
If you have access to a fogging agent or SAE 10 oil
prepare the pistons and cylinders for storage as follows:
1. Start the generator set.
2. While the engine is running, spray a fogging agent
or SAE 10 engine oil into the air intake for about two
minutes until the engine stops.
3. Stop the generator set.
If a fogging agent is not available perform the following:
1. Remove the spark p lugs.
2. Pour 15 cc (0.5 oz.) of engine oil into each spark
plug hole.
Ignition System Damage. Refer to the engine
operation manual for ignition system precautions
before cranking the engine while the spark plug
wires are disconnected.
3. Crank the engine two or three revolutions to
lubricate the cylinders.
4. Reinstall the spark plugs and torque them to
specifications.
3.11.5 Exterior
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.
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