two different units here...
Now just a minute here people. there are two units here. One is behind the diff, and joins the two steering knuckles together, with tie rod ends, both of which on mine are threaded and this is what adjusts toe in/out. The steering drag link which is what is listed by Superior from what i can see, is in front of the diff and has the steering damper attatched to it. On my 2005 neither end is threaded, both are welded. This assembly would have to be replaced wholis bolis if an end wore out. I intend to re-grease all mine and put new boots on the lot when I get around to it.
From the moderator of Nissan Patrol.com:
http://www.nissanpatrol.com.au/foru...at-to-keep-my-eye-on-Preventative-Maintenance
STEERING;
Checking for wear in steering components;
To check for wear in steering components you will need two people.
First person to operate the steering, second person underneath the car looking for excessive movement.With the engine off, person one needs to rock the steering wheel (from the straight ahead position) from left to right at the rate of about once per second. The steering doesn't need to be moved far, if they put one hand at the top of the wheel and move it from about the 11 o'clock position to 1 o'clock position is usually enough.
Person two needs to carefully inspect each steering joint, watching, feeling and listening for wear at each joint. For example, the drag link rod end where it attaches to the pitman arm on the steering box. As the pitman arm moves back an forth, the drag link should move with it, there should not be any movement in the joint on the end of the drag link or any of the other joints.
DRAG LINK; The joints on the end of the standard drag link (the steering arm in front of the front diff) are part of the link and can not be adjusted or replaced. If you find any wear in the joints it will need to be replaced. I recommend replacing the standard fixed link with an aftermarket heavy duty adjustable drag link. With the drag link sitting out in front of the diff it is exposed and easily damaged, aftermarket drag links are a lot stronger. Fitting an adjustable link will allow you to properly centre the steering if required. (moving the steering wheel on its splines does not centre the steering).
For those who like their 4WDing a little more hardcore, pay the extra and get a competition spec drag link with female threaded rod ends.
TIE ROD; The tie rod (the steering arm behind the front diff linking the left and right steering hubs together) is adjustable and has replaceable rod ends. The tie rod is adjusted to set toe in when you get a wheel alignment. For hard core off roader's the tie rod can be replaced with a heavy duty part.