Take out the loosened lug nuts and remove the two back wheels from the vehicle. Place jack stands under the back axle at both ends to secure the rear in an elevated position. Elevate the rear of the vehicle with a pump jack. With the emergency brakes activated, place chocks before the vehicle's front wheels to prevent rolling. Raise the vehicle high enough to access the axle assembly.Place the jacks close to the leaf springs.Place the jacks close to the springs on each side and raise the back of the vehicle just enough to gain access to the axle assembly. Secure two jacks - one on each side near the vehicle's rear - with jack stands. However, no jack alone will bear the weight. In order to access the leaf springs, the rear of your truck or van will need to be elevated a few inches off the concrete with a jack. If necessary, find someplace nearby with a flat parking space.Don't park on tilted ground - most driveways, slopes, inclines, etc.Therefore, you must have the truck parked on the flattest land possible, whether this happens to be your garage, the street in front of your house or in a nearby vacant parking lot. Even with the emergency brakes fully extended, your vehicle could possibly roll at the worst time imaginable, such as when you're under the chassis. On most residential properties, a driveway would be inappropriate for this type of work, because driveways are typically built with a slight incline, and those that aren't often lead to houses slightly below street level. In order to fix leaf springs safely, the vehicle must be parked on flat ground. In short, the following protective gear must be worn when you change out leaf springs: Finally, wear a thick set of grubbies and strong work shoes to protect your back and feet while getting down on the concrete under your truck or van. Second, wear gloves, as this will protect your hands from nicks and dirt, or possible strain to your wrists and fingers. Dust,debris and even fluid can drop from the underside of a vehicle, and you don't want anything possibly entering your eyes while working on the springs. Before you get under your vehicle to replace the leaf springs, a few precautionary measures are in order. In order to change out leaf springs on your vehicle, you'll need to have the following items in your arsenal: If upon inspection the leaf springs are cracked or corroded, a replacement of the springs is long overdue. This is due to the design of certain trucks, which are actually built with a slight lift in back to accommodate excess weight that could otherwise cause dipping. Then again, your truck could have bad leaf springs even if the truck itself remains in a perfectly horizontal position. Another indicator of bad springs is when the truck sags downward in back, which can cause the rear tires to flatten and point the headlights upward. However, it's not always easy to tell when springs are worn, because the visible evidence is often hard to spot. One of the most obvious indicators that your leaf springs are worn is when cracks appear on the leaves.
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