Caterpillar — Generator Bearings - Lubrication
Maintenance
From a Caterpillar owner's manual covering: 7C-1000, 9Y-1300, 9Y-1400, SR4. Check it applies to your exact model before use.
Applies to: Caterpillar SR4
Before you start
- DO NOT MIX GREASES
Procedure
- Remove the louver assembly or rear plate from the rear of the generator housing.
- Remove the top and lower grease pipe plugs.
- Install a grease fitting in the top, threaded grease pipe.
- Grease shielded ball bearings with 1.8 to 2.0 oz of 2S-3230 Grease at an interval of every 2000 hours.
- Grease spherical roller bearings with 1 oz of 108-8611 Grease at an interval of every 1000 hours. DO NOT MIX GREASES.
- Wipe off excess grease, remove the top grease fitting and install plug.
- Operate generator for one hour to allow grease to expand and force excess grease out of the cavity.
- Stop the engine, install the plug in the bottom grease pipe and wipe off excess grease.
- Install the louver assembly or rear plate.
Tools required
- Grease fitting Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.