Operational and Maintenance Manual G11 Series
7. SERVICE AND MAINTENANCE
7.1 Maintenance of Lube oil system
7.1.1 General
Oil change periods depend on the engine usage, application, installation and quality of fuel and lube oil. It is
necessary that oil should be changed at least once in six months, if the engine use is less than specified, oil
change period varies.
For gen set applications, it is necessary that the engine be installed on level horizontal plane area (Angle 1
deg max). For trolley mounted gen set transitional angle of 12 deg is acceptable. However, gen set should
never be run in an inclined position on continuous basis.
oil change period
First oil change after 60hr, next oil change ref. page no. 4, sr.no.47
Oil filter change period
Refer page no. 5, sr. no.52
Steady state lube oil pressure
3.5 – 4.5 bar
Steady state lube oil pressure
2.9 – 4 for 6G11
Steady state lube oil temp
85-105°C
Lube oil consumption
<0.2 % of fuel consumption
Ambient temp (Deg C)
Grade of oil
-20 to + 20
SAE 10 W 30
-10 to +55
SAE 15 W 40
-5 to +45
SAE 20 W 40
3G11
4G1111
6G11
Sump capacities
8 Liters
10 Liters
17 Liters
Engine capacities (with oil filter)
9 Liters
11 Liters
18 Liters
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