Air Lift Air Lift LoadLifter 5000 57354Air LiftOriginal price was $712.99. Current price is $516.99.In Stock
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1975 - 1986 Chevrolet C10
Confirmed to Fit
1973 - 1974 Chevrolet C10 Pickup
Confirmed to Fit
1975 - 1986 Chevrolet C20
Confirmed to Fit
1973 Chevrolet C20 Pickup
Confirmed to Fit
1975 - 1977, 1979 - 1984, 1986 Chevrolet C30
Confirmed to Fit
1973 - 1974 Chevrolet C30 Pickup
Confirmed to Fit
1987 - 1988 Chevrolet R20
Confirmed to Fit
1987 Chevrolet R30
Confirmed to Fit
1984 Dodge D100
Confirmed to Fit
1974 Dodge D100 Pickup
Confirmed to Fit
1977 - 1993 Dodge D150
Confirmed to Fit
1975 - 1980 Dodge D200
Confirmed to Fit
1969 - 1974 Dodge D200 Pickup
Confirmed to Fit
1981 - 1993 Dodge D250
Confirmed to Fit
1975 - 1980 Dodge D300
Confirmed to Fit
1969 - 1974 Dodge D300 Pickup
Confirmed to Fit
1981 - 1993 Dodge D350
Confirmed to Fit
1994 - 2001 Dodge Ram 1500
Confirmed to Fit
1994 - 2002 Dodge Ram 2500
Confirmed to Fit
1994 - 2002 Dodge Ram 3500
Confirmed to Fit
1978, 1980 Dodge RD200
Confirmed to Fit
1975 - 1977, 1986 - 1989 Dodge W100
Confirmed to Fit
1969 - 1974 Dodge W100 Pickup
Confirmed to Fit
1977 - 1993 Dodge W150
Confirmed to Fit
1975 - 1980 Dodge W200
Confirmed to Fit
1969 - 1974 Dodge W200 Pickup
Confirmed to Fit
1981 - 1993 Dodge W250
Confirmed to Fit
1975 - 1980 Dodge W300
Confirmed to Fit
1969 - 1974 Dodge W300 Pickup
Confirmed to Fit
1981 - 1993 Dodge W350
Confirmed to Fit
1965 - 1983 Ford F-100
Confirmed to Fit
1975 - 1996 Ford F-150
Confirmed to Fit
1969 - 1999 Ford F-250
Confirmed to Fit
1997 Ford F-250 HD
Confirmed to Fit
1970 - 1997 Ford F-350
Confirmed to Fit
1975 - 1978 GMC C15
Confirmed to Fit
1973 - 1974 GMC C15/C1500 Pickup
Confirmed to Fit
1979 - 1986 GMC C1500
Confirmed to Fit
1975 - 1978 GMC C25
Confirmed to Fit
1970, 1973 - 1974 GMC C25/C2500 Pickup
Confirmed to Fit
1979 - 1986 GMC C2500
Confirmed to Fit
1975 - 1978 GMC C35
Confirmed to Fit
1970, 1972 - 1974 GMC C35/C3500 Pickup
Confirmed to Fit
1979 - 1986 GMC C3500
Confirmed to Fit
1987 GMC R2500
Confirmed to Fit
1987 GMC R3500
Confirmed to Fit
1971 GMC Sprint
Confirmed to Fit
2003 - 2005 Nissan Murano
Confirmed to Fit
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LoadLifter 5000 Leaf Spring Leveling Kit.
Offering up to 5,000 pounds of load-leveling capacity, the LoadLifter 5000 kit from Air Lift will make towing and hauling with your early model Ford, Chevy, Dodge, and GMC pickups a comfortable and stress-free experience. For frequent use, our fully-adjustable, industry leading air springs are the perfect partner for your vehicle, eliminating any issues that you might face. The LoadLifter 5000 kit helps to eliminate problems frequently faced when towing and hauling, such as squat, poor headlight aim, trailer sway, body roll, and bottoming out. With the added stability and weight-distribution that air springs provide, you can haul safely, knowing that you have optimal braking and steering control. With the ability to adjust the air pressure from 5-100 PSI, your pickup can be ready for any weight and any situation (Note: Do not exceed vehicle's gross vehicle weight rating (GVWR)). An Air Lift exclusive, each kit comes equipped with upper and lower roll plates, added to protect the air springs from sharp edges. The air springs themselves are built like a tire, reinforced with 2-ply fabric for maximum strength. All of the end caps are made with an ultra high-strength nylon composite formula, strong as steel but much lighter and corrosion proof. As the leader in air suspension products for more than 70 years, Air Lift is committed to delivering quality load support parts that last. To ensure the highest quality, longevity, and customer satisfaction, the key suspension components, including the air springs and all hardware, have all been torture-tested to 1 million cycles on our hydraulic test rig. With a lifetime warranty and 60-Day Ride Satisfaction Guarantee -- not to mention the Air Lift reputation for great customer service and technical support, should you run into any snags in the installation process -- you can purchase this kit with peace of mind.
Air Lift Company has developed dependable air spring suspension products since our inception in 1949. Our original product, a rubber air spring inserted into a car’s factory coil spring, was created and patented in 1950. We’ve come a long way since 1949 and are proud to be a dedicated suspension specialist company.
Today, Air Lift load support products are sold worldwide and are engineered to fit over 540 vehicles. Our extensive product line offers air helper springs for trucks, RVs, SUVs, CUVs, and vans, as well as the most technologically advanced on-board air compressor systems for on-the-go air spring control.
Air Lift leads the industry in no-drill applications – kits that bolt onto your vehicle’s frame, speeding the installation process. Our teams work constantly to bring innovative products to you and upgrade existing products with the latest technology.
All of our efforts are spent ensuring your safety and comfort by designing, engineering, and manufacturing the highest quality suspension products. We are a family-owned business based in Lansing, Michigan, and make your family and cargo’s safety our top priority.
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Call 888-634-9494Limited Lifetime
48 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 1975 - 1986 | Chevrolet C10 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1973 - 1974 | Chevrolet C10 Pickup | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1975 - 1986 | Chevrolet C20 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1973 | Chevrolet C20 Pickup | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1975 - 1977, 1979 - 1984, 1986 | Chevrolet C30 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1973 - 1974 | Chevrolet C30 Pickup | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1987 - 1988 | Chevrolet R20 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1987 | Chevrolet R30 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1984 | Dodge D100 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1974 | Dodge D100 Pickup | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1977 - 1993 | Dodge D150 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1975 - 1980 | Dodge D200 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1969 - 1974 | Dodge D200 Pickup | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1981 - 1993 | Dodge D250 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1975 - 1980 | Dodge D300 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1969 - 1974 | Dodge D300 Pickup | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1981 - 1993 | Dodge D350 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1994 - 2001 | Dodge Ram 1500 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1994 - 2002 | Dodge Ram 2500 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1994 - 2002 | Dodge Ram 3500 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1978, 1980 | Dodge RD200 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1975 - 1977, 1986 - 1989 | Dodge W100 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1969 - 1974 | Dodge W100 Pickup | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1977 - 1993 | Dodge W150 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
| 1975 - 1980 | Dodge W200 | Requires 8” between tire and frame. Will not fit applications with a side: mount fifth wheel hitch. |
Yes, the Air Lift LOADLIFTER 5000. 57215 (Part #BBCG57215) is designed to fit the 1975-1986 Chevrolet C10.
The Air Lift LOADLIFTER 5000. 57215 (Part #BBCG57215) fits the following vehicles: 1975-1986 Chevrolet C10; 1973-1974 Chevrolet C10 Pickup; 1975-1986 Chevrolet C20; 1973 Chevrolet C20 Pickup; Chevrolet C30; 1973-1974 Chevrolet C30 Pickup; 1987-1988 Chevrolet R20; 1987 Chevrolet R30; 1984 Dodge D100; 1974 Dodge D100 Pickup; 1977-1993 Dodge D150; 1975-1980 Dodge D200; 1969-1974 Dodge D200 Pickup; 1981-1993 Dodge D250; 1975-1980 Dodge D300; 1969-1974 Dodge D300 Pickup; 1981-1993 Dodge D350; 1994-2001 Dodge Ram 1500; 1994-2002 Dodge Ram 2500; 1994-2002 Dodge Ram 3500; Dodge RD200; 1975-1989 Dodge W100; 1969-1974 Dodge W100 Pickup; 1977-1993 Dodge W150; 1975-1980 Dodge W200; 1969-1974 Dodge W200 Pickup; 1981-1993 Dodge W250; 1975-1980 Dodge W300; 1969-1974 Dodge W300 Pickup; 1981-1993 Dodge W350; 1965-1983 Ford F-100; 1975-1996 Ford F-150; 1969-1999 Ford F-250; 1997 Ford F-250 HD; 1970-1997 Ford F-350; 1975-1978 GMC C15; 1973-1974 GMC C15/C1500 Pickup; 1979-1986 GMC C1500; 1975-1978 GMC C25; GMC C25/C2500 Pickup; 1979-1986 GMC C2500; 1975-1978 GMC C35; GMC C35/C3500 Pickup; 1979-1986 GMC C3500; 1987 GMC R2500; 1987 GMC R3500; 1971 GMC Sprint; 2003-2005 Nissan Murano. Always verify your specific year, make, and model before ordering.
The Air Lift LOADLIFTER 5000. 57215 (Part #BBCG57215) fits 1975-1986 Chevrolet C10 models. The 2005 model year is the last year covered by this part number. For newer models, check for an updated version.
The Air Lift LOADLIFTER 5000. 57215 (Part #BBCG57215) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The LoadLifter 5000 Series is designed for multiple Chevrolet, Dodge, Ford and GMC trucks. It is recommended for most 3/4- and 1-ton pickups and SUVs with leaf springs. Your vehicle must have at least 8" of clearance between the frame and rear tire for the kit to fit. Contact Air Lift customer service at (800) 248-0892 to confirm fitment for your specific vehicle.
No. Installing air springs will not change the GAWR, GCWR or GVWR of your vehicle. You must not exceed the vehicle's GVWR, as indicated by the vehicle manufacturer. Exceeding GVWR is dangerous and voids the Air Lift warranty.
There are three versions: (1) Standard LoadLifter 5000 with zinc-plated steel roll plates and black nylon air lines; (2) LoadLifter 5000 Ultimate with black powder-coated roll plates and black nylon air lines; (3) LoadLifter 5000 Ultimate Plus with stainless steel roll plates, braided stainless steel air lines, and stainless steel air spring mounting hardware. You can identify your kit by examining the roll plates and air lines. Air Lift also offers two upgrade kits: part 52300 (braided stainless steel air lines and fittings) and part 52301 (stainless steel roll plates, air spring mounting hardware, braided stainless steel air lines and fittings).
LoadLifter 5000 Series air springs provide up to 5,000 pounds of load-leveling support with air adjustability from 5–100 PSI. The springs support approximately 40 pounds of load (combined on both springs) for each 1 PSI of pressure. Actual load capacity depends on air pressure and vehicle load distribution.
Required tools include: standard and metric open-end or box wrenches, adjustable wrench, ratchet, standard and metric sockets (regular and deep well), 3/8" and 5/16" sharp drill bits, heavy-duty drill, center punch, hammer, torque wrench, hose cutter or razor blade, hoist or floor jacks, safety stands, safety glasses (2 pairs), and an air compressor or compressed air source.
All three kits include: 2 air springs, 4 roll plates, 2 push-to-connect (PTC) fittings, 16 flat washers (3/8"), 8 lock washers (3/8"), 8 hex-head cap screws (3/8" x 7/8"), 1 air line, 6 zip ties, 2 valve caps, 2 M8 flat washers, 4 5/16" hex nuts, and 2 star washers. Kit 57215 (Standard) includes 2 upper brackets, 2 lower brackets, 4 2" U-bolts, 4 4.5" U-bolts, 16 nylon lock nuts, and additional spacers and fasteners. Kits 88215 (Ultimate) and 89215 (Ultimate Plus) have similar hardware with material variations (stainless steel components in the Plus version).
Support the axle with jack stands, remove the wheels, and raise or lower the vehicle to obtain normal ride height. Your vehicle must have at least 8" of clearance between the frame and the rear tire for the kit to fit. Read the entire installation guide before beginning. For 1994 and newer Dodge 4WD pickups, you will need to remove the inner fender well liner. For 1999 and later Super Duty F-250 and F-350 trucks, you must relocate the emergency brake cable bolt from the outside to the inside of the frame rail to prevent air spring rupture.
1. Set a roll plate on both ends of the air spring with the radiused edge facing the spring. 2. Install a 90-degree swivel air fitting finger tight plus 1½ turns (do not overtighten). 3. Place the upper bracket on top of the air spring and roll plate with legs facing down. 4. Set the air spring on the lower bracket, aligning the two holes in the spring base with the two outer slots in the bracket top. 5. Loosely attach the upper bracket using flat washers, lock washers, and hex-head bolts. 6. Loosely attach the lower bracket using flat washers, lock washers, and hex-head bolts, ensuring the flange faces outboard (tire side).
The air spring must be installed between 5" and 7" from the upper bracket to the lower bracket, with the distance equal on both sides. It is best to position the upper bracket as high as possible. Failure to mount the air spring at the recommended height can result in the air spring bottoming out. In some cases, optional spacers may be necessary to achieve the correct 5"–7" spacing.
If not using a spacer, attach the lower bracket securely using the provided U-bolts, flat washers, and lock nuts, then torque the nuts to 16 lb-ft (22 Nm). If using a spacer to achieve proper mounting height, place the spacer legs down on the leaf spring and attach the lower bracket using the U-bolts, flat washers, and lock nuts, then torque to 16 lb-ft (22 Nm). Use shorter U-bolts when attaching to frame contact overload springs. If the stock U-bolts are too high to allow the lower bracket to sit flat on the leaf spring, trim the stock U-bolts.
1. Position the upper bracket parallel to the lower bracket and align the assembly vertically and horizontally. 2. Before drilling, check the back-side of the frame for clearance issues with brake lines, gas lines, and electrical lines; relocate any obstacles. 3. Using the upper bracket as a template, center punch and drill one 3/8" locator hole through the frame at one of the top bolt holes. Repeat for the opposite side. 4. For non-Dodge vehicles, loosely install a washer-head frame bolt, oversized flat washer, and lock nut. For Dodge trucks, if holes fall into a horizontal indentation, use two upper bracket spacers with the washer-head frame bolt, oversized flat washer, and lock nut. 5. Install a washer-head frame bolt, oversized flat washer, and lock nut at the second location (add spacers if needed for Dodge trucks). 6. Remove clamps and drill the remaining two holes. Install appropriate hardware and torque the nuts to 44 lb-ft (60 Nm).
Secure the air spring to the upper and lower brackets using an open-ended 9/16" wrench by tightening the two bolts on the top and the two bolts on the bottom of the spring assembly. Align the air spring uniformly between the upper and lower brackets. Ensure there is at least a thumb's width of clearance between the uninflated bag and the frame. Trim all four U-bolt ends on each side of the vehicle to prevent bottoming out on the upper bracket. Check all bolts and connectors to ensure hardware is secure, then repeat the process for the other side of the vehicle.
Yes. You must drill one 3/8" locator hole through the frame at one of the top bolt holes of the upper bracket, then repeat for the opposite side. After installing the locator bolts, you drill the remaining two holes. You will also need to drill a 5/16" hole for the Schrader valve location (if not already present). Before drilling the frame, check the back-side for clearance issues with brake lines, gas lines, and electrical lines, and temporarily relocate any obstacles.
Yes, in some cases. If the stock U-bolts are too high to allow the lower bracket to sit flat on the leaf spring to achieve the correct 5"–7" mounting height, you will need to trim the stock U-bolts. Additionally, you must trim all four U-bolt ends on each side of the vehicle to prevent bottoming out on the upper bracket after installation.
Yes, but only for 1994 and newer model Dodge 4WD pickups. Remove the inner fender well liner by carefully driving the pin through the fasteners with a center punch. These fasteners will be reused along with a special spacer to reattach the liner and provide clearance for the air spring. Reinstallation instructions are provided on page 13 of the manual.
Yes, but only for 1999 and later Super Duty F-250 and F-350 trucks. Remove the bolt that holds the emergency brake cable to the outside of the frame rail and reinstall it in reverse order with the nut on the inside of the frame rail to prevent rubbing against the air spring. Failure to switch this bolt will cause the air spring to rupture.
For standard and Ultimate kits, recommended locations are: (A) inside the fuel tank filler door, (B) inside rear wheel wells, or (C) license plate or rear bumper area. For LoadLifter Ultimate Plus kits, the recommended location is the rear bumper area or license plate. You will need to drill a 5/16" hole at the chosen location if one does not already exist.
1. Cut the air line in half using a razor blade or hose cutter, making clean, square cuts (do not use scissors or wire cutters). 2. Use zip ties to secure the air line to fixed points along the chassis without pinching or kinking it. The minimum bend radius is 1". Leave at least 2" of slack to allow for movement. 3. Keep at least 6" of clearance between all air lines and the exhaust system. Avoid sharp bends and edges. 4. Install the Schrader valve in the chosen location using the provided hardware (hex nuts, flat washer, star washer, rubber washer).
1. Use zip ties to secure the air line to fixed points along the chassis every 6" to 8". Leave at least 2" of slack for movement. 2. Tighten the air line hex nut finger tight, then use two wrenches to turn 1 additional flat (1/6 of one full turn). Do not overtighten. The easiest way to tighten the fitting is off the vehicle. 3. Install the Schrader valve in the chosen location. 4. Coil and secure any excess air line in an area where it will not be susceptible to damage. The braided stainless steel air line cannot be trimmed. Keep the air line away from fuel lines, brake lines, and electrical wires.
Torque the lower bracket U-bolt nuts to 16 lb-ft (22 Nm). This applies whether or not a spacer is used.
Torque the upper bracket frame bolt nuts to 44 lb-ft (60 Nm) after drilling the remaining two holes and installing the appropriate hardware.
The 90-degree swivel air fitting should be finger tight plus 1½ turns. Do not overtighten.
Tighten the air line hex nut finger tight, then use two wrenches to turn 1 additional flat (1/6 of one full turn). Do not overtighten. The easiest way to tighten the fitting is off the vehicle before installation.
The minimum recommended air pressure is 5 PSI, but the system can safely be run at zero air pressure unladen (no load). The maximum air pressure is 100 PSI. Never inflate beyond 100 PSI. Loaded vehicles require at least 25 PSI. A "loaded vehicle" refers to a vehicle with a heavy bed load, a trailer, or both. Operating the vehicle below the minimum air spring pressure will void the Air Lift warranty.
Keep at least 6" of clearance between all air lines and the exhaust system. Avoid sharp bends and edges. If a heat shield was included in the kit, install it. If there is no heat shield but one is required, call Air Lift customer service at (800) 248-0892.
Ensure there is at least a thumb's width of clearance between the uninflated bag and the frame. When inflated to 75–90 PSI, there must be at least 1/2" clearance from anything that might rub against the sleeve, including the tire, brakes, frame, shock absorbers, and brake cables. Keep at least 6" clearance from heat sources such as the exhaust system.
No. Compressed air can cause injury and damage to the vehicle and parts if not handled properly. Do not try to inflate the air springs until they have been properly secured to the vehicle.
1. Inflate the air spring to 30 PSI. 2. Spray all connections and the inflation valves with a solution of 1/5 liquid dish soap and 4/5 water. Spot leaks by looking for bubbles in the soapy water. 3. After the test, deflate the springs to the minimum pressure required to restore the system to normal ride height (do not deflate below 5 PSI). 4. Check the air pressure again after 24 hours. A 2–4 PSI loss after initial installation is normal. Retest for leaks if the loss is more than 5 PSI.
Perform the following checks: (1) Clearance test—inflate to 75–90 PSI and verify at least 1/2" clearance from tire, brakes, frame, shock absorbers, and brake cables. (2) Leak test—inflate to 75–90 PSI and check all connections for leaks; eliminate all leaks before road testing. (3) Heat test—ensure at least 6" clearance from heat sources; install heat shield if included. (4) Fastener test—recheck all bolts for proper torque. (5) Road test—drive 10 miles and recheck for clearance, loose fasteners, and air leaks. (6) Overnight leak down test—recheck pressure after 24 hours; if pressure drops more than 5 PSI, there is a leak that must be fixed. (7) Thirty-day or 500-mile test—recheck the system after 30 days or 500 miles (whichever comes first) for signs of rubbing or abrasion and fastener tightness.
Check air pressure weekly. Always maintain normal ride height. Never inflate beyond 100 PSI. Loaded vehicles require at least 25 PSI. Periodically check the air spring system fasteners for tightness and check the air springs for any signs of rubbing, realigning if necessary.
If there is a problem with the swivel fitting: (a) Check the air line connection by deflating the spring, removing the line by pulling the collar against the fitting, and pulling firmly on the air line. Trim 1" off the end of the air line with a clean, square cut. Reinsert the air line into the push-to-connect fitting. (b) Check the threaded connection by tightening the swivel fitting another half turn. If it still leaks, deflate the air spring, remove the fitting, re-coat the threads with thread sealant, and reinstall by hand tightening as much as possible, then use a wrench for an additional two turns. If there is a problem with the inflation valve: (a) Check the valve core by tightening it with a valve core tool. (b) Check the air line by removing it from the barbed fitting. Cut the air line a few inches in front of the fitting and use pliers or vice grips to pull/twist the air line off. Do not cut off the air line completely as this will nick the barb and render the fitting useless. If these steps do not resolve the problem, call Air Lift customer service at (800) 248-0892.
Pressure determination comes down to three things: level vehicle, ride comfort, and stability. (1) Level vehicle—if headlights are shining into trees or the vehicle is leaning to one side, raise the air pressure to level it. (2) Ride comfort—if the vehicle has a rough or harsh ride, try different pressures to determine the best comfort. (3) Stability—stability should be the priority, meaning you may need to sacrifice a perfectly level and comfortable ride. Stability issues include roll control, bounce, dive during braking, and sponginess, which usually require an increase in pressure. Start with the vehicle level or slightly above. When in doubt, always add air. If the front dives while braking, increase the pressure in the front air bags if equipped. If air bags have bottomed out, increase the pressure. It may be necessary to maintain different pressures on each side of the vehicle; loads such as water, fuel, and appliances can cause a 50 PSI difference between sides.
The springs in the LoadLifter 5000 kit will support approximately 40 pounds of load (combined on both springs) for each 1 PSI of pressure. The required air pressure will vary depending on the state of the original suspension and the load distribution. Loads carried behind the axle (including tongue loads) require more leveling force (pressure) than those carried directly over the axle.
If the air springs are properly installed and maintained, they can last indefinitely.
No. Air pressure can be adjusted with any type of compressor as long as it can produce sufficient pressure to service the springs. Even a bicycle tire pump can be used, but it requires significant effort. A dedicated on-board compressor system is optional, not required.
Yes, the vehicle can be lifted on a hoist for short-term service work such as tire rotation or oil changes. However, if the vehicle will be on the hoist for a prolonged period of time, support the axle with jack stands to take the tension off the air springs. Use of on-board leveling systems does not require deflation or disconnection. If it becomes necessary to raise the vehicle by the frame, make sure the system is at minimum pressure (5 PSI) to reduce tension on the suspension and brake components.
Check for an improperly installed air line, or air line with holes or cracks. Perform a leak test on the air line connections, the threaded connection into the air spring, and all fittings in the control system. Also check that air lines are seated properly in connectors. Inspect fittings with soapy water. If the air line is leaking, trim the hose or re-seal the fitting, ensuring lines are cut straight.
Look for a kink or fold in the air line. Replace any air line that has been kinked. A kinked air line will prevent proper pressure from reaching that corner or will cause a leak.
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