Originally Posted by Gizmo0706
First off, thanks Herk for the info! A couple questions though before a run out and get some grease. How much does this usually take to get to new grease and how are you getting the old grease out? I assume you are just pulling it out with your finger as its filled with new grease.
DO NOT use your finger! That hub is sharp! (Don't ask how I know)
How much grease is harder to answer. It depends on whether the hub is full now, or they just hand packed the bearings and left the hub empty. (My case)
If empty, it may take several full pumps of a large tube manual grease gun to even get any motion at all. (In fact you may even worry it is going right into the drum!) But after a bit of slow pumping you will see motion at the bearing and the packed stiff grease (typically gray icky color) will start to ooze out. keep going until you see the red (if you use red) new grease come out. Now your hub and bearings are filled.
If they are already filled and you are just flushing the bearings, only a pump or two is needed to completely push the outer bearing dirty grease outside; and you can stop. (The inner bearing grease will be pushed into the hub).
Since you will continue to do this several times, there will eventually come a time when that dirty inner bearing grease will contact the outer bearing when you pump, so it will take a long while to push all the dirty grease out and see new red grease.
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