TP-6137 5/0312 Section 3 Scheduled Maintenance
3.3 Lubrication System
See the Service Schedule for oil change and oil filter
replacement intervals. See Section 1 for the oil drain, oil
check, and oil fill locations.
3.3.1 Oil Specifications
Use HD oil that meets the American Petroleum Institute
(API) classification of CD, CC/CD, or CC. Using an
unsuitable oil or neglecting an oil change may result in
damage and a shorter engine life. Figure 3-1 shows the
recommended Society of Automotive Engineers (SAE)
viscosity designation for given operating temperature
ranges.
°C
°F
-- 3 0 -- 2 0 -- 1 0 0 1 0 2 0 3 0 4 0
0204060 80 100
°C
°F
5W20/5W30
10W30
20W40
15W40
10W40
TP-5856-1
SAE
Service
Grade
Operating Temperature
-- 2 0
Figure 3-1 Engine Oil Selection
Note: Failure to observe the oil specifications may
cause inadequate lubrication/oil pressure and
cold-starting difficulties.
3.3.2 Oil Check
Check the oil level in the crankcase daily or before each
startup to ensure that the level is in the safe range. To
check the oil level, remove the dipstick and wipe the end
clean, reinsert as far as possible, and remove. Maintain
the oil level between the Min and Max marks on the
dipstick, as shown in Figure 3-2. See Section 1,
Figure 1-1, for dipstick location.
1
2
TP-5586-3
1. Min mark
2. Max mark
Figure 3-2 Oil Level Check Marks
Note: Do not operate the set if the oil level is below the
Min mark or above the Max mark.
3.3.3 Oil Change
Change the oil more frequently if the generator operates
under dirty, dusty conditions. See Figure 3-3 for oil
capacities.
Model L (Qts.)
3.5EFOZ/4EOZ 1.25 (1.32)
Figure 3-3 Oil Capacities
Oil Change Procedure
Whenever possible, drain the oil while it is still warm.
1. Drain the oil.
a. Press the generator set on/off button to stop the
generator set.
b. Disconnect the power to the battery charger, if
equipped.
c. Disconnect the generator set engine starting
battery, negative (--) lead first.
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