Tracking
After I had my new tyres fitted I noticed the Landy pulled to the left a little. I knew the pre load was fine on the hubs as they were recently done, I also knew the tyres were at equal pressure. I guessed it was time to check the tracking. A garage wanted £20 (some closer to £30) and I was curious to see if I could do it my self, but I didn't have a tracking bar, or a spare laser jig for that matter..... So I asked on a 4x4 forum (www.lr4x4.com) and received several helpful suggestions.
Tracking is basically toe in or toe out adjustment via the tracking rod that joint both hubs from behind via track rod ends (ball joints)
Toe in..................Toe out (err......slightly exaggerated...)
First of all, measure the distance from inner rim edge to the other inner rim edge of the front edge of the front wheels. Then check to see if the other side of the (180 degrees, other side of the hub) front wheels are the same distance. Mine weren't. I'm informed you need them either neutral (same distance) or 1mm or so wider at the front (cheers Diff @ LR4x4). You adjust it by loosening the locking collars on the track rod and turning it (leave track rod ends attached to hubs). The treads on the track rod ends are left and right handed, so when you turn the rod, it pushes out the rear of the hubs or pulls them in - thus adjusting the tracking.........
But...........
after what would appear to be 14 years without being moved I found things a little stiff. I had to remove the track rod with the rod ends and work them loose with a vice/oil/hammer/blow torch...
When all reassembled, it was a doddle. Good luck, the worst part is trying to loosen the track rod.