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3.3 Lubrication System

See Section 3.2, Service Schedule, for oil change and

oil filter replacement intervals. See Section 1.5 for the

oil drain, oil check, oil fill, and oil filter locations.

For extended operation, check the oil level every 8

hours. Maintain the oil level at or near, not over, the full

mark on the dipstick.

3.3.1

Low Oil Pressure Shutdown

The low oil pressure shutdown feature protects the

engine against internal damage if the oil pressure drops

below 24.1 kPa ±13.8 kPa (3.5 psi ±1.5 psi) because of

oil pump failure or other malfunction. The shutdown

feature does not protect against damage caused by

operating with the oil level below the safe range; it is not

a low oil level shutdown. Check the oil level regularly,

and add oil as needed.

3.3.2

Oil Check

The generator set is shipped with oil. Before operating a

new generator set, check the engine oil in the

crankcase.

See

Section 1.5,

Components. Verify that the oil level is at the F mark on

the dipstick. Add oil that has a viscosity appropriate for

the

climate.

See

Recommendation.

Do not check the oil level when the generator set is

running. Shut down the generator set and wait several

minutes before checking the oil level.

3.3.3

Engine Oil Recommendation

Use API (American Petroleum Institute) Service Class

SG, SH, or SJ synthetic oil. Synthetic oil oxidizes and

thickens less than other oils and leaves the engine

intake valves and pistons cleaner. Select the viscosity

based on the air temperature at the time of operation.

See Figure 3-1.

5W-20, 5W-30

°F

--20

°C

--30

--10

--20

Temperature Range Expected Before Next Oil Change

Figure 3-1 Engine Oil Selection

TP-6517 4/09

Generator

Section 3.3.3,

Engine

10W-30

100

3.3.4

Oil Change Procedure

Drain the oil while it is still warm.

1. Drain the oil.

a. Place the generator set master switch in the

OFF position.

b. Disconnect the power to the battery charger.

c. Disconnect the generator set engine starting

battery, negative (--) lead first.

d. Remove the housing side panel.

e. Remove the oil drain hose from its retaining

clip. Remove the cap from the oil drain hose

and lower the hose into an oil collection

container.

f. Open the oil drain valve on the engine.

g. Allow time for the engine oil to drain completely.

h. Close the oil drain valve.

i. Replace the cap on the oil drain hose. Replace

Set

the oil drain hose in its retaining clip.

2. Replace the oil filter.

Oil

a. Remove

counterclockwise with an oil filter wrench.

b. Clean the gasket sealing surface of the oil filter

adapter.

c. Apply a light coat of clean oil to the rubber seal

of the new oil filter.

d. Install the new oil filter following the instructions

provided with the filter.

Note: Dispose of all waste materials (engine

Section 3 Scheduled Maintenance, 12 kW Models

the

oil

filter

oil, fuel, filter, etc.) in an environmentally

safe manner.

rotating