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Rear Wheel Bearings (again)
Posted 26 June 2003 - 09:31 PM
Another issue is that the old OEM setup had three seals but NAPA says only two seals are needed with the aftermarket bearings. Now I remember reading a story or two about replacement rear wheel bearings on Gen1 Legacies only lasting 40k miles. So now I'm wondering if these aftermarket seals may not keep crud out as well? Anyone have any real life experience with this or other feedback?
Posted 27 June 2003 - 05:57 AM
The FWD models have normal ball bearings, and the AWD models have dual tapered roller bearings.
If you're in doubt that they are the right ones, I'd go back and double check, or go get some bearings from the dealer.
Posted 27 June 2003 - 09:47 AM
Dual tapered roller bearings...ah yes that's what they're called. The new bearings look exactly like the old bearings would if you stacked them all up nice and pressed them together into one lump (that is, the new ones are a big lump or cartridge.) I guess what I now want to know is, do the OEM bearings start out as one unit when installed but they come apart when you disassemble the hub? Or are these aftermarket ones a cheapo substitute that works but doesn't last for 150k miles like the OEM?
Good thing I'm putzing around with an extra set of hubs so my car isn't out of service. Guess I'll go to the dealer and ask to look at their bearings and then talk to some technicians I know and see what they say. (Going to the dealer is about the absolute last thing I ever want to do. Between the salesmen and the price gouging...I just freekin' hate the place.)
Posted 27 June 2003 - 05:58 PM
Posted 28 June 2003 - 04:27 AM
Posted 28 June 2003 - 04:48 AM
98-02 Foresters had caged ball bearings in the rear (I have pics of my old ones.
A contributing reason to them dying out is that they came fromt he factory packed in "shipping" grease. This grease will wash out if you go tip toeing through a water or in my case trudge out to a muddy paintball field a couple times a month. Suby techs almost NEVER replace this grease with real wheel bearings grease that can hold up to advers conditions.
As a result Subaru updated ALL the AWD rear wheel bearings to a new dual tapered design in 2003 ... so the design differences you are describing seem correct. The old set up was the bearing + 1 dust shield + 2 oil seals. I think the new one doesn't include the dust shield.
Posted 28 June 2003 - 05:47 AM
This link is what Non-Subaru Service Depts gets when they request the proceedure: www.endwrench.com/current...earRep.pdf
Next is the "official" service bulletin:
Finally, and this is an 8 meg file, this is the Service proceedure the Dealers get:
Posted 28 June 2003 - 02:13 PM
As an interesting side note, they were packed completely full of that clear "shipping" grease. I can see how someone might just install them without repacking with good grease. Question is, why in the heck would they do such a good job of packing them with a wimpy grease if they didn't expect the customer to install them that way? Makes me wonder if it's a total accident that Subaru wasn't using a more durable grease.
Camosuba, I'll try to snap some photos before I finish the job. However it might be a few days before I get to play in the grease again (family reunion today and hopefully do something FUN tomorrow.) This job really doesn't seem as tough as it was hyped up to be. Hopefully I'll get some decent photos and do a little write-up to add to the Ultimate Repair Manual.
Posted 28 June 2003 - 11:33 PM
Posted 01 July 2003 - 07:04 AM
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