G'day all,
The Patrol auto hubs have a habit of making clicking noises and not engaging and disengaging properly. You can fix them by removing the auto locking mechanism, making them a manual hub. Auto becomes free and locked is still locked. And it's easy to do.
Remove the hubs from the vehicle, shift them to the locked position, and using a large screw driver or small lever bar, prise out the auto locking mechanism. There are six steel tangs holding the mechanism in place, so it takes a bit of force to do. You can see which part you need to remove in the photos.
http://i758.photobucket.com/albums/x...00882Small.jpg
Hub on the right is how it looks when you first remove it from the vehicle, hub on the left has the auto mechanism removed.
http://i758.photobucket.com/albums/x...00880Small.jpg
This pic shows the underside of the auto mechanism. Hubs are ready to refit.
Tony