Pack bearings, then fill void between bearings with Castrol Pyroplex Blue, Mystick, or some other high-film-strength EP grease rated for disk brakes; NOT cheap grease as shown. Any air in this area will contract during deep fording, causing water to be sucked past the seals into the grease & bearings. Filling with grease prevents this.

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DO NOT FILL THE HUB LOCKS. They need air space inside for their mechanisms to move, so they should only have a light coat of grease. Most modern hub locks should be merely dunked in ATF before installation. Read their included instructions.

Owner caption July 2003 · Photo 202 of 5000