The hubs should already be greased inside from the factory. I would spread some grease on the inside of the splines if they are dry. Other than that, it should be a simple, bolt-on application...

And a word of caution from my own error - don't get any kind of form-a-gasket or RTV sealant inside the thread holes if you elect to use such a sealant between the hub and the locking body. I discovered the hard way that those compounds expand or outgas when heated. If that happens inside the bolt hole, which is effectively sealed by the bolt and the sealant, it will cause the hub body to bulge exactly where the outer wheel bearing race sits. And that, as I can tell you from experience, will deform the bearing race and destroy the bearing. I had to replace both hubs and wheel bearings because of that - a pricey lesson learned. <img src="/forums/images/graemlins/baby.gif" alt="" /> Here's proof...


1997 Sportage 4x4, auto-trans, Warn manual hubs, 4" UPYOURKIA front lift, TJ 106AA rear springs, 2-5/8" body lift, 31x10.50 treads, SmittyBilt SRC front and XRC rear bumper, swing-out tire mount, OBX LSD front diff, Track Finder rear locker, 5.38 R&Ps and... really crappy gas mileage! <img src="/forums/images/graemlins/shiner.gif" alt="" />