Arnott Installation Manuals
AS-2833
ARNOTT FRONT AIR STRUT
FOR MERCEDES-BENZ R-CLASS (W251)

Congratulations on your purchase of an Arnott® air suspension product. We at Arnott Incorporated are proud to offer a high quality product at the industry’s most competitive pricing. Thank you for your confidence in us and our product.

Proper installation is essential to experience and appreciate the benefits of this system. Please take a moment to review these installation instructions before you begin to install these components on your vehicle. The removal and installation of air suspension products should only be performed by a fully qualified, ASE Certified, professional.

It is equally important to be aware of all necessary safety measures while installing your new Air Suspension System. This includes proper lifting and immobilizing of the vehicle and isolation of any stored energy to prevent personal injury or property damage.

"Engineered to Ride, Built to Last®"

AS-2833 Arnott Front Air Strut

WARNING: The air suspension system is under pressure (up to 10 bar, or 150 lbf/in). Verify pressure has been relieved and disconnect power to the air suspension system prior to disassembly. Do not allow dirt or grease to enter the system. Always wear standard hand, ear, and eye protection when servicing the air suspension system.

Arnott® is committed to the quality of its products. If you have a question or problem with any Arnott product, please contact Arnott by calling 800-251-8993 during normal business hours or email www.arnottinc.com

GENERAL INFORMATION:

Reading this manual signifies your agreement to the terms of the general release, waiver of liability, and hold harmless agreement, the full text of which is available at www.arnottinc.com

Not to be stored below 5°F (-15°C) or above 122°F (50°C).

Avoid damage to air lines and cables.

Removal and installation is only to be performed by fully qualified personnel.

Use car manufacturer’s diagnostic software.

CAUTION: Damage to the vehicle and air suspension system can be incurred if work is carried out in a manner other than specified in the instructions or in a different sequence.

WARNING: To avoid the possibility of short circuits while working with electric components consult your owner's manual on how to disconnect your battery.

WARNING: Consult your vehicle owner's manual, service manual, or car dealer for the correct jacking points on your vehicle and for additional care, safety and maintenance instructions. Under no circumstances should any work be completed underneath the vehicle if it is not adequately supported, as serious injuries and death can occur.

AIR STRUT REMOVAL

1. Set steering to straight ahead.

2. Raise the vehicle.

3. Remove front wheel.

4. Disconnect the air strut’s electronic wire connector (located in the fender well).

5. Disconnect the sway bar end linkage from the shock. (FIGURE 1)

FIGURE 1
FIGURE 1

6. Remove the lower shock mount bolt and nut. (FIGURE 2)

FIGURE 2
FIGURE 2

7. Remove the control arm nut and separate from the upper A arm. (FIGURES 3, 4)

FIGURE 3
FIGURE 3
FIGURE 4
FIGURE 4

8. Remove the wire harness mount from shock. (FIGURE 5)

FIGURE 5
FIGURE 5

9. Disconnect the airline at the top of the strut. (FIGURE 6)

FIGURE 6
FIGURE 6

10. Remove the air line fitting. To do this remove the collet and the remaining fitting will slide off of air hose. (FIGURE 7)

FIGURE 7
FIGURE 7

11. Remove the three (3) strut top flange nuts. (FIGURE 8)

FIGURE 8
FIGURE 8

12. Remove air strut.

13. Removal complete.

AIR STRUT INSTALLATION

WARNING: Tighten all nuts and bolts to manufacturer's specifications during the installation process.

WARNING: Do not remove the air fitting from the air spring. Doing so may cause damage and/or void warranty. Remove the white shipping pin from the new air fitting and insert the air line until fully seated.

1. Installation is in reverse order of air strut removal using the supplied cable tie.

AS-2833 REV 2 07/24/2017