BEARING-ALIGNING 9W2401 - Caterpillar

Lubrication System
Lubricant Recommendations
Due to significant variations in the quality and in the performance of commercially available oils, Caterpillar makes the following recommendations:
Cat NGEO (Natural Gas Engine Oil)
Cat NGEO EL250
Cat NGEO EL350The proper SAE viscosity grade of oil is determined by the minimum ambient temperature during cold engine start-up, and the maximum ambient temperature during engine operation. To determine the oil viscosity that is required for starting a cold soaked engine, refer to the minimum temperature in Table 1. To select the oil viscosity for operation at the highest anticipated ambient temperature, refer to the maximum temperature in the Table. Use the highest oil viscosity that is available in order to meet the required temperature during start-up.
Table 1
Engine Oil Viscosity
Cat NGEO
Grade of Viscosity Ambient Temperature
Minimum Maximum
SAE 30(1) 0 °C (32 °F) 40 °C (104 °F)
SAE 40(1) 5 °C (41 °F) 50 °C (122 °F)
(1) Cat NGEO is available in these grades only. Multigrade oils are NOT recommended for use in Caterpillar Gas Engines. If other grades of viscosity are selected, ensure that the oil meets the requirements for Caterpillar Gas Engines.For further information about oils, see Special Publication, SEBU6400, "Caterpillar Gas Engine Lubricant, Fuel, and Coolant Recommendations".Lubricant Capacities
The capacity of the engine crankcase includes the capacity of the oil filters that are installed at the factory.
Table 2
Lubrication System
Approximate Refill Capacities
Engine Liters US Gallons
G3508 224 59
G3512 307 81
G3516 402 106 Auxiliary Oil Filters
Table 3
Approximate Capacities for Auxiliary Oil Filters
Auxiliary Oil Filter System Capacity With Elements Capacity Without Elements(1)
117-9550 Oil Filter Assembly(2) 132 L
(35 US gal) 176 L
(46.5 US gal)
118-8419 Oil Filter Assembly(3) 132 L
(35 US gal) 176 L
(46.5 US gal)
119-2104 Oil Filter Assembly(4) 178 L
(47 US gal) 244 L
(64 US gal)
(1) Auxiliary oil filter systems increase the oil capacity in order to increase the service life of the oil. Caterpillar recommends operation without the auxiliary oil filter elements.
(2) This assembly contains 14 elements. This assembly is for use with G3508 Engines.
(3) This assembly contains 14 elements. This assembly is for use with G3512 Engines.
(4) This assembly contains 21 elements. This assembly is for use with G3516 Engines.Fuel
Fuel Recommendations
Caterpillar gas engines will operate successfully on a broad range of gaseous fuels. Pipeline natural gas has been used for many years. Commercial fuel gases are mixtures of gases. These fuels consist primarily of hydrocarbons (combinations of hydrogen and carbon) and some inert gases. The compositions of these gas mixtures have extreme variations. Fuels such as wellhead gas, bio-gas, and manufactured gas need to be reviewed for acceptability. Analyze the fuel in order to determine the following characteristics:
Composition
Contaminants
Heat value
Methane number
Specific gravityField gas can have varying characteristics of combustion. Field gas can contain numerous harmful impurities. The impurities can alter the BTU content. The impurities can also alter the methane number. The impurities include everything from water up to complex hydrocarbons that can lead to detonation and severe engine damage. To minimize these effects, Caterpillar recommends the following guidelines:
Evaluate the fuel with the Caterpillar Methane Number Program, LEKQ6378. Methane