Installation Guide S E R I E S GM Silverado/Sierra 1500 Kits 57288 | 88288 | 89288 GM Trail Boss/Sierra AT4 Kits 57388 | 88388 | 89388 For maximum effectiveness and safety, please read these instructions completely before proceeding with installation. MN-1085 • (011810) • ERN 9073 Failure to read these instructions can result in an incorrect installation.
IDENTIFYING THE DIFFERENCES BETWEEN KITS Should you need to contact Air Lift customer service, you will need to know which kit you are inquiring about: standard LoadLifter 5000, LoadLifter 5000 Ultimate or LoadLifter 5000 Ultimate Plus. The kits are easily identifiable by looking at the roll plates and air lines. Standard LoadLifter 5000 — Zinc-plated steel roll plates and black nylon air lines. LoadLifter 5000 Ultimate — Black powder-coated roll plates and black nylon air lines.
TABLE OF CONTENTS A. Installation Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 B. Hardware and Tools Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 C. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Notation Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 D. Installing the LoadLifter 5000 Series System. . . . . . . . . . . . .
LoadLifter 5000 Series A. Installation Diagram NOTE: If the truck has fifth-wheel hitch brackets along the side of the frame, these U-bolts may not be used. I * Optional hardware for vehicles equipped with fifth-wheel hitches that have frame side plates (see page 9 for details) R T A N P* U P* V F E O F B C S D N N fig. A.
LoadLifter 5000 Series B. Hardware and Tools Lists Common Parts Included in All 3 Kits Item Part# Description......................................................... Qty A 07856 Upper bracket (GM 1500)........................................ 2 A 07388 Upper bracket (Trail Boss)........................................ 2 B 03156 Lower bracket.......................................................... 2 C 01656 Forward clamp bracket............................................
LoadLifter 5000 Series C. Introduction The purpose of this publication is to assist with the installation and maintenance of the LoadLifter 5000 series air spring kits. All LoadLifter 5000 series kits utilize sturdy, reinforced, commercial-grade single or double, depending on the kit, convolute bellows. The air springs are manufactured like a tire with layers of rubber and cords that control growth.
LoadLifter 5000 Series D. Installing the LoadLifter 5000 Series System GETTING STARTED 1. Raise and support the vehicle in a way, using safety stands or equivalent, that the axle can be safely dropped away from the frame. This will need to be done for the air spring assembly to be put into position between the axles and frame (Fig. D.1). fig. D.1 2. Remove the factory bolts that hold the upper brake line bracket in place. Reattach the bracket using the two new M8-1.
LoadLifter 5000 Series 4. Using a T40 sized Torx bit, remove the two outer most Torx head screws on both wire harness guards, located on the front side of the axle (Fig D.6). Passenger's (Right) Side fig. D.6 5. Remove the brake line bracket attached to the axle under the leaf spring on both sides of the vehicle. Set bolt aside for reinstallation. 6. Attach the brake line tab bracket (G) using the factory hardware previously removed and tighten securely on both sides of the vehicle (Figs. D.7 & D.8). 7.
LoadLifter 5000 Series ASSEMBLING THE AIR SPRINGS 1. Place a 3/8"-16 x 3"carriage bolt (O) through the inner most square hole on the rear side of each lower bracket (B) (Fig. D.11). B B RIGHT LEFT O O fig. D.11 NOTE The radiused (rounded) edge of the roll plate (F) will be toward the air spring so that the air spring is seated inside the roll plate. 2.
LoadLifter 5000 Series INSTALLING THE AIR SPRINGS 1. Drop the axle or raise the frame to make room to put the assemblies into position. CAUTION ENSURE VEHICLE IS PROPERLY SUPPORTED PRIOR TO BEGINNING INSTALLATION. 2. Place the assemblies on the lower strike plate with the fitting side of the assembly to the outside (wheel side) of the vehicle. Align the tab on the forward clamp bracket (C) with the hole on the front of the lower bracket (B) (Fig. D.16). 3.
LoadLifter 5000 Series 2. Lower the vehicle or raise the axle while inserting the threaded portions of the U-bolts (I) through the corresponding holes in the upper brackets (A). Install flange nuts (N) finger tight (Fig. D.19). I N A fig. D.19 3. Adjust the upper bracket (A) as needed to veritcally align the air spring with the frame (or as close to perpendicular as possible). 4. Torque all flange nuts (N) to 16 lb.-ft. (27Nm). For trucks that have fifth-wheel hitch brackets alongside the frame rail: 1.
or bumper Hex nuts AN Schrader valve LoadLifter 5000 Series Air line hex nut E. Installing the Air Lines Air lines are routed USE IN the air springs from to combo Schrader valves. Plus LoadLifter 5000 manuals series air lines come in two styles: nylon and braided stainless steel. Begin by choosing locations for the Schrader valves and drill a 5/16” (8mm) hole, if necessary (Fig. E.1). CAUTION Star washer Rubber washer 5/16” (8mm) hole A. Inside fuel tank filler door Flat washer B.
LoadLifter 5000 Series INSTALLING BRAIDED STAINLESS STEEL AIR LINES CAUTION KEEP THE AIR LINE AWAY FROM THE FUEL LINE, BRAKE LINES AND ELECTRICAL WIRES. 1. Use zip ties to secure Air Line Setup Without Compressor System the air line to fixed points Braided stainless steel Vehicle body Flat along the chassis every air line to air spring or bumper 6” to 8” (150-200mm). Hex nuts Leave at least 2” (50mm) AN of slack to allow for any Schrader movement that might pull valve Air line hex nut on the air line.
LoadLifter 5000 Series F. Finished Installation 1. The images show the finished installation of both sides (Figs. F.1, F.2, F.3 & F.4). NOTE Finished installation images show the LoadLifter 5000 Ultimate Plus kit installed. Driver's (left) side view. fig. F.1 Driver's (left) side view. fig. F.3 12 Passenger's (right) side view. fig. F.2 Passenger's (right) side view. fig. F.
LoadLifter 5000 Series INSTALLATION CHECKLIST Clearance test — Inflate the air springs to 40-60 PSI (2.8-4.1BAR) and make sure there is at least 1/2” (13mm) clearance from anything that might rub against each sleeve. Be sure to check the tire, brakes, frame, shock absorbers and brake cables. Leak test before road test — Inflate the air springs to 40-60 PSI (2.8-4.1BAR) and check all connections for leaks. All leaks must be eliminated before the vehicle is road tested.
Thank you for purchasing Air Lift Products —the Authorized Installer's choice! Need Help? Need Help? Contact Air Lift Company customer service department by calling (800) 248-0892. Contact Company For calls Air fromLift outside the USA Customer or Canada, Service at (800) 248-0892 dial (517) 322-2144. or email service@airliftcompany.com. For calls outside the U.S. or Canada, dial (517) 322-2144. Air Lift Company • 2727 Snow Road • Lansing, MI 48917 or P.O.
