Wheel hub oil pan.
https://s3-us-west-1.amazonaws.com/h...hub_oilpan.jpg
Previously:
https://www.homemadetools.net/forum/...6673#post84133
https://www.homemadetools.net/forum/...790#post136946
https://www.homemadetools.net/forum/...713#post136771
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too fancy and too hard to clean up, Just cut the side out of a gallon oil jug, drain the oil then use the pour spout on the jug to pour into collection tank Toss the jug in the trash make another the next time
What frank said.
Please help out the automobile/motorcycle/bicycle people.
Why is there oil in a truck hub?
How often is it changed?
Does it have to be replenished between changes?
Thanks.
#1 - because oil lubes the wheel bearings
#2 - that is a “service call” for the owner. I typically changed the differential oil, which is the same lube as the wheel hubs & lubes the wheel hubs by the oil migrating along the axle shaft “to” the wheel hub & returns to the diff. by gravity in the axle tube, once a year, in heavey duty use in the oilfield. With that said it may get changed more often when you “blow a diff” & will have shrappnel everywhere that gas to be cleaned out.
#3 - no it doesn’t have a need to be replenished. My service schedule was a complete grease, inspection, every 100 engine hours. If a diff seal was leaking , then it would be repaired & the diff oil topped up.
Note- whenever a wheel & hub is removed you will loose oil. There is a plug in the hub that can be removed to replenish the oil in the hub after the wheel/hub has been reinstalled.