Left front end has dropped on 1987 Nissan Truck
vfdf4: your truck has a torsion bar suspension. This is why you don't see any springs. Depending on the amount of drop you are talking about, there is some degree of adjustment to correct ride height. If you look under the truck closely at the lower control arms, you will notice that there are long steel rods roughly 11/4 inches in diameter which attach from the rear of the control arms and go approximately to the back end of the transmission where they have what appears to be a small arm coming off each one.
There are bolts going thorough each one with locking nuts. By drawing the bolt towards you, it will raise the vehicle.
If there is no significant difference, a few inches the adjustment can be made. HOWEVER, before doing this, check the following. Make sure all the tires are the same size or at least, the tire sizes are the same size on both sides in the rear and the same size on both sides in the front although they may differ in size between front and rear. The tires ideally should be the same brand, same tread and roughly same amount of wear. Set the tire pressures equally. Check the distance between the rear axle or control arm and the body on both sides to confirm that the problem is not sourced from the rear. The distances should be the same on both sides. It is not uncommon for a sagging front end to be diagnosed as a front end problem when it is in fact coming from the rear OR the vehicl has a load which has not been taken into account.. Once you are satisfied everything is correct, at that point you can make the adjustment. You can determine the distance from under the truck by looking at the distance of the top of the front control arm in relation to the snubbers on the frame.
NOTE: The truck must be on the ground sitting in a laden position, no load in the bed or interior. Ideally it should have the front wheels on radius plates which allow for full and unrestricted movement of the front suspension during the adjustment. If you don't have radius plates, you can use a thick piece of cardboard and wheel bearing grease spread on the under side of the cardboard which will sit on the floor. The floor must be fairly smooth or this little trick won't work. If you have to draw up more than 40% of the total distance of the adjusting bolt, the torsion bar is too far gone to use.
I have seen plenty of people **** them up further, but have not known if they have had lasting effects. The front end must be aligned. This answer has been supplied by mybunkey, a Nissan master tech from the old school. I hope I have answered your question sufficiently.
Mar 07, 2009 |
1987 Nissan Pickup