TP-6591 10/13 25Section 3 Scheduled Maintenance
3.3 Lubrication System
3.3.1 Oil Specifications
Use high-quality detergent oils (including synthetic) that
meets the American Petroleum Institute (API)
classification of SJ or higher. Using unsuitable oil or
neglecting an oil change may result in engine damage
that is not covered by the engine warranty. Figure 3-1
shows the recommended Society of Automotive
Engineers (SAE) viscosity designation for given
operating temperature ranges.
Do not mix different oil brands. Incompatibility could
cause a breakdown of lubricating ingredients and
reduce engine protection.
32 40 60 80 10020
F-20
C-30
-- 2 0 -- 1 0
0
10 20 30 40
Recommended SAE
iscosity Grades
SAE
0
50
Figure 3-1 Engine Oil Selection
3.3.2 Oil Check
Check the oil level in the crankcase daily or before each
start-up to ensure that the level is in the safe range. Do
not check the oil level while operating the unit. Stop the
generator set and keep the generator set level to get an
accurate reading. To check the oil level, remove the
dipstick and wipe the end clean, reinsert and remove.
Maintain the oil level between the Full and Add marks on
the dipstick, as shown in Figure 3-2. See Section 1,
Service Views for the dipstick location.
1
TP-5586-3
2
1. Full mark
2. Add mark
Figure 3-2 Oil Level Check
Note: Do not operate the set if the oil level is below the
Add mark on the dipstick or above the Full mark
on the dipstick.
3.3.3 Oil Additions
Adding some oil between oil changes is normal. The
amount varies with generator set usage. Open the oil fill
cap and pour in a small amount of oil using a funnel or
other suitable pouring device. See Section 1, Service
Views for the oil check and oil fill locations.