I'll be looking at replacing the front pads and discs probably sometime this summer. My current mileage is 42K. Is there a recommended interval at which the front wheel bearings should be cleaned, inspected and re-greased?
Not that I know of - I wish I had pulled mine at 100K, repacked them, and set the bearing end play (requires a dial indicator with .001" accuracy and a magnetic mount)
I didn't get around to it until 175K miles, when I replaced the pads and rotors - by that time the passenger side bearings were in less than perfect condition with some evidence of wear (cloudiness/scuffing on the rollers and races, and a brown tint, which I took to be evidence of possible heat discoloration), so I replaced them - they probably could have easily gone another 25K to 50K miles if I had just repacked them, but I didn't want to risk a failure out on the road.
The drivers side bearings looked essentially new. The hubs and driver's side bearings were cleaned and repacked with Mobil 1 Synthetic Grease (the red stuff) and new seals installed. Richard's idea on the driver for the dust caps is a good idea - I used a plastic mallet to drive mine in, a driver would have been far better. Also the service suggests using a gasket sealant. - they were sealed when I removed them - I'd say the hardening Permatex - No. 2 I think - would be good.
I'm not noticing any front end problems, just trying to be proactive.
I think that repacking them at about every 100K and setting the end play so they are not too loose would do a lot to extend their life.
Also, am I correct that the rear axle bearings get their lube from the axle lube?
I'm not certain, but if I had to guess ..... yeah, probably.
