Nissan Adjustable Air Spring Suspension PDF Installation Instructions

Hose Cutter, Razor Blade, or Sharp Knife
Hoist or Floor Jacks
Safety Stands
Safety Glasses
Air Compressor, or Compressed Air Source
Spray Bottle with Dish Soap/Water Solution

I. Getting Started
1. Determine the Normal Ride Height. The Normal Ride Height is the distance between the bottom edge of the wheel-well and the center of the hub with the vehicle in the “as delivered” condition. In some cases, Normal Ride Height is not perfectly level.
a. Remove unusual loads and examine your vehicle from the side to ensure it is on a level surface (Figure 1).
b. If necessary (in cases where your leaf springs are sagging badly), use a jack to raise the rear end so that the vehicle achieves the original “as delivered” ride height.
2. Measure the distance between the center of the hub and the bottom edge of the wheel well (Figure 2). This is the Normal Ride Height. Enter the measurement below:
NORMAL
RIDE HEIGHT: __________ inches
3. IMPORTANT: Be sure to follow the specific instructions for the correct vehicle application.
4. See special installation instructions for the Dodge Durango.

II. Deciding Where To Mount
1. This kit will function in front or behind the axle. It is also permissible to stagger the air spring, if necessary, for fit. Where the kit is installed will depend on the type of vehicle presented.
2. For Mazda and Toyota applications, mount the air spring assembly forward of the axle housing.
3. For Chevy/GMC, Isuzu, Nissan, Oldsmobile, and Dodge applications, mount the air spring assembly behind the axle housing.
4. If your vehicle make is not listed above, set the air spring assembly on the leaf spring and check for clearance problems or obstructions that would prevent mounting the kit in that location.

III. Assembling the Air Spring Unit
1. Install 90 degree air swivel fitting (D) to the top of the air spring. Use a 7/16″ open end wrench being careful to tighten on the metal hex nut only. Tighten finger tighte plus 1 and 1 /2 turns (Figure 3). Do not over tighten. NOTE: This fitting is precoated with sealant.
2. Thread the attached fitting through the upper bracket (B) (Figure 4). Position the elbow towards the front or rear of the vehicle depending on which direction will allow easier access for the air line.
3. Slide the nylon nut (K) over the air fitting and onto the thread post, making sure that the flat side is up (Figure 5).
4. Tighten the nylon nut to secure the bracket. Hand tight is sufficient. IMPORTANT: Ensure that the bracket is tight and flat to the roll plate on both sides.
5. Loosely attach the lower bracket (C) to the bottom of the air spring with 1/2″ flat washer (L) and 1/2″ Hex Head Cap Screw (J). See Figure 6.

IV. Mounting the Lower Bracket
1. With the vehicle at normal ride height, set the bracket-air spring assembly on the leaf spring in the determined location (forward or behind). Set the assembly onto the leaf spring with the hook end of the lower bracket (C) over the spring perch or factory U-bolt. The hook end of the lower bracket must lock over the U-bolt or perch to avoid moving along the leaf spring. See Figure 7 and 8. NOTE: For some Chevy/GMC S-Series Pickups and Blazer/Jimmy models, there may be a small tab located on the spring perch plate (Figure 9). It will be necessary to trim this tab off for proper placement of the lower bracket. This can be achieved by using a hack saw or die grinder.
2. Secure the lower bracket to the leaf spring using U-bolt (E), clamp bar (F), flat washers (H), and nylock nuts (G). See Figure 10. Tighten to 16 ft-lbs.

Download Nissan Adjustable Air Spring Suspension PDF Installation Instructions