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If you have manual locking hubs they lock when you turn clockwise. This engages the wheels to the front axles and the front differential. You can then engage the 4wd from the cab lever. If you unlock the hubs (turn couterclockwise) they disengage and "free wheel" This position saves a little fuel since you are not spinning all that heavy steel in the front differential all the time. You should always engge the hubs a few times per year even if you don't use the 4wd. This allows all of the oil seals to turn and get new lubricant.

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16y ago

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