- Joined
- Feb 19, 2019
- Threads
- 5
- Messages
- 681
- Reaction score
- 1,167
- Location
- Upper Norwegia
- Vehicle(s)
- '71 Bronco, '02 Excursion
- Your Bronco Model
- Undecided
Either o-rings or a vacuum line. Neither are difficult nor expensive to fix. O-rings are more involved than finding a leaky vacuum line - requires disassembling the hubs - but most handy folks could manage it in an afternoon. It isn't a mileage issue, it's a matter of 19 year-old rubber parts losing their pliability and ability to seal. May have lasted longer if it saw more regular use. New additives and the near-perfection of seal chemistry ensure that the replacements (and anything built new) won't suffer the same fate.I have an '01 F250 powerstroke where the automatic hubs no longer work. Fortunately, the hubs have both "Auto" and "Lock" so I can still manually lock them. The truck has only 65k miles on it. The Bronco has a different design and I hope the hubs are more reliable.
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