ADAPTER 7C1652 - Caterpillar

Ball Bearings
For ball bearings, use Caterpillar 2S-3230 Special Purpose Grease (SPG). This grease is an NLGI grade number 2. There is Polyurea (a thickener) in this grease. The temperature range of Caterpillar 2S-3230 Special Purpose Grease (SPG) is -29 °C (-20.2 °F) to 177 °C (350.6 °F). For extremely low temperatures, use either NLGI grade number 1 or NLGI grade number 0.Use 56.7 grams (2 ounces) of grease. Refer to the Lubrication Plate.Note: On standard applications, ball bearings should be lubricated at 2000 hour intervals.Note: On standby applications, ball bearings should be lubricated once per year.Spherical Roller Bearings
For spherical roller bearings, use Caterpillar 108-8611 Grease. This grease is an NLGI No. 1.5 Grade. There is no molybdenum disulfide in this grease. There is Clay (a thickener) in this grease. At 40 °C (104.0 °F), the viscosity of Caterpillar 108-8611 Grease is 32 cSt. At 100 °C (212.0 °F), the viscosity is 5 cSt.Use 28.3 grams (1 ounce) of grease. Refer to the information on the Lubrication Plate.Note: On standard applications, spherical roller bearings should be lubricated at 1000 hour intervals.Note: On standby applications, spherical roller bearings should be greased once per year.Lubrication Procedure
Remove either the louver assembly or the rear plate from the rear of the generator housing.
Remove the top grease pipe plug and remove the lower grease pipe plug.
Install a grease fitting in the grease pipe.
Grease the shielded ball bearings with 2S-3230 Grease (53.28 mL (1.8 ounces) to 59.20 mL (2.0 ounces)). Lubricate shielded ball bearings at 2000 hour intervals. Grease spherical roller bearings with 108-8611 Grease (29.6 mL (1 ounce)). Spherical roller bearings should be lubricated at 1000 hour intervals. Do not mix greases.Note: Some two-bearing generators have spherical roller bearings in the front bracket and ball bearings in the rear bracket. These units should use a common 108-8611 Grease. This grease should be used for the front bearing and the rear bearing.
Wipe off the excess grease. Remove the top grease fitting. Install the plug.
Operate the generator for one hour. This will allow the grease to expand. The expanding grease will force the excess grease from the cavity. When the excess grease is forced from the cavity, the internal pressure will be reduced. The generator should continue to operate until the grease stops purging.
Stop the engine. Install the plug in the bottom grease pipe. Wipe off the excess grease.
Install the louver assembly or install the rear plate.