Front 4x4 wheel-bearings and inner-axle needle-bearings should be cleaned, inspected, and packed with a generous amount of Kendall L-427 Super-Blu.
The splines/grooves that the hub-locking mechanism rides in and out on should have a LIGHT coat of the same; too much will not allow the spring to engage the hub in freezing temperatures; no grease at all will soon wear out the splines.
A light coating of same should be applied to EVERY movable part of the locking mechanism.
All seals and O-rings should be smeared with same.
Not lubricating the moving parts is cause for the hubs being almost impossible to turn by hand; plus, a coating of grease will prevent water from seeping into the mechanism.
The only harm in too much grease being in the locking mechanism is when freezing temperatures thicken the grease to the point that the mechanism cannot engage.
Use any other grease at your own risk.