GUIDE-LOWER 5372123 - Caterpillar

Illustration 1 g00519634
Perform the following procedure in order to add oil to the fan hub.
Rotate the hub until oil filler plug (1) is facing upward.
Remove oil filler plug (1) and oil level plug (2) .
Add oil until oil begins to drip from the oil level hole. See Operation and Maintenance Manual, "Lubricant Viscosities and Refill Capacities" for the appropriate type of oil.
Allow the oil to settle in the hub. If you use synthetic oil, allow extra time for the oil to settle. Recheck the oil level. Add additional oil, if necessary.Note: Do not overfill the hub. This procedure will allow an air space in the hub. The air space will allow the oil to expand. Failure to leave an air space may result in seal failure.
Apply new thread sealant to the threads of the oil level plug and the oil filler plug. Reinstall the plugs.
Check for any leaks and make any necessary repairs before operating the fan.