Comments by "SeanBZA" (@SeanBZA) on "SCREAMING Serpentine Belt! (Lookin for Engine Knock) Ford F-150 5.4 Triton" video.
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Yes but the bearing is only a tiny bit cheaper than the whole assembly, and once you take into account the 15 minutes of time to press it out and the new one in, it is cheaper to replace the whole thing. Yes doing it yourself the labour cost is lower, but Ray has to make a profit on the job, and the 30 minutes to swap versus spending 30 minutes on another billable job, is making replace the whole thing look a lot cheaper. I have done a repack on noisy ones, but once noisy the bearings are already toasted, but more grease from new will help with longer life. Bearing packer that gets the extra bit past the seals works well, especially on ZZ bearings where that is just a dust seal, and not so well on RR ones, where you might pop the seal getting more in.
Have done gearbox bearings, where the new ones came in as RR, and I removed the inner seal, so the gearbox oil could lubricate the bearing as well, much better life over the original. Those with an outer seal both got removed, so the seal got lubrication.
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