Supercharged111
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No, out back is all regular replaceable bearings.
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On the front wheel bearings of a 4WD GMT400?I repack every spring during yearly brake checks and repack and replace if needed.
I've used a bunch of brands and formulations. I've bought expensive Amsoil synthetic grease, and I've used cheap stuff I inherited from dead relatives. The issue is that you don't "mix" different kinds of grease, and you repack with fresh periodically to remove wear particles and grease that's broken-down by heat, age, contamination, etc.1. Great info on grease. Will you recommend the best based on your experience?
You're almost certainly not going to re-pack the front, sealed hub. It goes bad, you're more likely to just replace the entire assembly. For non-sealed bearings, "I" would solvent off the bearings and hub, blow dry with compressed air, then repack with fresh grease. Your rear bearings are lubed with the liquid "axle grease" so there's no re-packing them.2. Regarding my 1998 k2500 5.7, 8 lug, rear drum and front disc, do I understand correctly that...
A. Since mixing grease is bad, if bearings and racings are in good shape, is it a good practice to just wipe off old grease and repack with new.
I put a new bearing on a new race (not "racing"). If either is bad, replace both. Not everyone will agree.B. If either bearing or racing are bad, replace both? Do not attempt to match old with new.
The front bearings are totally different between 2WD and 4WD. The 4WD has a "sealed" front hub assembly, so there's no packing them unless you're a fanatic. [EDIT] I don't think there's any way to replace the seals on the front hub/bearing assembly. Therefore, they're not serviceable like my Toronado hubs.[/EDIT] 2WD is as wonderfully serviceable as a 1965 Caprice.C. Rock Auto offers bearings/racings or the complete hub assembly for both front and back wheels. HOWEVER, are bearings interchangeable bet 2x2 vs. 4x4? A member indicated there might be a difference.
Thanks
I'm amazed some manufacturers still sell them individually. At work we recently went around with a vendor over them labelling their bearings as "Each" instead of "Set". We want to know we're getting both the bearing and race, so we insisted they label the part correctly so our warehouse people don't think they're getting two each instead of one set.I put a new bearing on a new race (not "racing"). If either is bad, replace both. Not everyone will agree.
I regrease the front hubs on my 4x4 Burb every spring through the abs wheel speed sensor. I have 1 timkin and 1 moog, the new moog came with a penta (5 sided) bit screw in an attempt to stop people from making them last forever. This bit is in any good security bit set...
I put a rubber tip on a grease zirk that I snap into my grease gun. I dont press it into to hole very hard so that I dont over pressurize the sealed bearings and F em up. While spinning the hub you pump about 10-15 pumps in
I regrease the front hubs on my 4x4 Burb every spring through the abs wheel speed sensor... ...After 5 years of doing this I see absolutely no problems.
While spinning the hub you pump about 10-15 pumps in, every pump you feel the wheel bearing become smoother. Then you must clean the grease out of the abs sensor gear.
$10 per side, for a sealed-bearing hub assembly? Are you buying them from Viet Nam? What vehicle is this?I just change them anytime I pull a rotor. They’re what? $10 preside? They’re $50 a side on my Cummins andiuse the same procedure
2WD is as wonderfully serviceable as a 1965 Caprice.
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