PUMP GP- 5371021 - Caterpillar

Illustration 1 g00920301
Perform the following procedure in order to check the oil level in the fan hub.
Rotate the hub until oil filler plug (5) is facing upward.
Remove oil level plug (6) .
Rotate the hub until oil begins to drip from the oil level hole. If the hub can be rotated more than 45° in either direction and no oil drips from the oil level hole, oil must be added. Refer to Operation and Maintenance Manual, "Hub Oil - Add" for the proper procedure.
Check for leaks. A low oil level may indicate that a leak is present. Check the oil level of the hub more often, if the oil level is consistently low.