Arnott Installation Manuals
KIT # MC-3208, MC-3209
FOR 2018 HARLEY-DAVIDSON® SOFTAIL SERIES

Congratulations on your purchase of an Arnott® Motorcycle Air Suspension system. This system provides you with the ability to maintain your bike at a constant level regardless of load, resulting in enhanced vehicle ride, handling, and performance. 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 motorcycle. 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 motorcycle and isolation of any stored energy to prevent personal injury or property damage.

"Elevate Your Ride."

KIT # MC-3208, MC-3209 For 2018 Harley-Davidson Softail Series

TruAIR

WARNING: DO NOT inflate the air suspension system until it is installed. Inflation of the air suspension system before both ends are supported by the motorcycle’s frame and/or appropriate suspension components may result in serious personal injury and/or damage to the air suspension system. The maximum recommended air spring inflation pressure is 200 psi.

Arnott Industries® is committed to the quality of its products. If you have a question or problem with any Arnott product, please contact us by calling +1 321-868-3016 during normal business hours or email techassistance@arnottinc.com (In the EU please call +31 (0)73 7850 580 or email Info@arnotteurope.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

Avoid damage to air lines and electrical components.

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

CAUTION: Damage to the motorcycle 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.

Each owner or installer is unique, therefore installation of this system can be done many different ways. The mounting locations of the compressor and inflation switch are suggestions by our engineers. If proper wiring guidelines and instructions are followed, relocation of the compressor or switch will neither affect the system operation nor void your warranty.

Adjust air shock pressure as required for desired ride quality to maximize the benefits of your system. Excess pressure will result in a firmer ride, too little pressure will allow the suspension to bottom out.

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: Refer to the Owner’s Manual for the bike and instructions for the motorcycle lift for all correct lifting procedures. It is also recommended that you protect any chrome or painted surfaces that may be damaged during lifting, removal or installation process.

Use a solid, level surface to position the bike on a motorcycle lift and use all recommended safety techniques. Lift the bike so the rear wheel is just slightly off the ground.

1. Remove the seat and bracket over lower end of shock. (FIGURES 1, 2)

FIGURE 1
FIGURE 1
FIGURE 2
FIGURE 2

2. Remove right side cover and saddle bags. (FIGURES 3, 4)

FIGURE 3
FIGURE 3
FIGURE 4
FIGURE 4

3. Remove rear sub-frame and fender. (FIGURES 5, 6)

FIGURE 5
FIGURE 5
FIGURE 6
FIGURE 6

4. Loosen pinch bolt and remove lower shock bolt. (FIGURES 7, 8)

FIGURE 7
FIGURE 7
FIGURE 8
FIGURE 8

5. Remove upper shock bolt and remove shock. (FIGURES 9, 10)

FIGURE 9
FIGURE 9
FIGURE 10
FIGURE 10

6. Lift rear tire until swingarm is barley touching frame. Locate the two threaded holes shown below. (FIGURES 11, 12)

FIGURE 11
FIGURE 11
FIGURE 12
FIGURE 12

7. Using blue Loctite on supplied bolts, mount the compressor assembly to the threaded holes. (FIGURES 13, 14)

FIGURE 13
FIGURE 13
FIGURE 14
FIGURE 14

NOTE:  WHEN MOUNTED ON MOTORCYCLE, AIR FILTER VENT MUST BE POINTING TOWARD THE GROUND.

8. Bundle split loom around red pump wire and black solenoid wire using the included zip ties. (FIGURES 15, 16)

FIGURE 15
FIGURE 15
FIGURE 16
FIGURE 16

9. Run bundled split loom and 4mm air line up the right side of frame. (FIGURE 17)

FIGURE 17
FIGURE 17

10. Remove the lower clutch perch bolt. Reusing the screw, attach the handlebar switch to the perch. Route the wires down the handlebars or the clutch cable, under the fuel tank back towards the battery. Following the wiring diagram in the back of this manual, complete the electrical connections. Bundle and tuck electrical components in front of the battery. (FIGURES 18, 19, 20)

FIGURE 18
FIGURE 18
FIGURE 19
FIGURE 19

FIGURE 20
FIGURE 20

11. Secure wire loom to wire harness using supplied zip ties, run air hose towards upper shock mounting bolt. (FIGURE 21)

FIGURE 21
FIGURE 21

12. Screw a VOSS fitting into the air shock, finger tight. Then remove the white pin. Insert the 4mm air hose into the fitting until you feel it seat. Remove the fitting from the shock and confirm the keeper is on the hose. Reinsert the fitting into the shock and snug tight with a wrench. (FIGURES 22, 23, 24, 25)

FIGURE 22
FIGURE 22
FIGURE 23
FIGURE 23

FIGURE 24
FIGURE 24
FIGURE 25
FIGURE 25

13. Install the shock in the motorcycle with the air line facing the right side. (FIGURES 26, 27)

FIGURE 26
FIGURE 26
FIGURE 27
FIGURE 27

14. Tighten the upper and lower shock bolts. (FIGURES 28, 29, 30)

FIGURE 28
FIGURE 28
FIGURE 29
FIGURE 29

FIGURE 30
FIGURE 30

15. Reinstall the seat bracket and rear sub-frame/fender. (FIGURES 31, 32)

FIGURE 31
FIGURE 31
FIGURE 32
FIGURE 32

16. The clocking of the shock eyes can be changed to suit the owner’s preference. Simply fix the lower eye in a vise to keep it from moving. Then grasp the damper sleeve as shown below. Twist the sleeve on the shock body. (FIGURES 33, 34)

FIGURE 33
FIGURE 33
FIGURE 34
FIGURE 34

The terms Harley-Davidson®, Harley®, H-D®, Buell®, Softail®, Dyna®, V-Rod®, Tri-Glide®, and Sportster® are used for reference only. Arnott Air Suspension products are in no way authorized by nor associated with the Harley-Davidson Motor Company. All references to Harley-Davidson terms and models are for reference and identification purposes only. The use and installation of any Arnott Air Suspension product or kit may adversely affect or void your Harley-Davidson® factory warranty. It is the responsibility of the motorcycle owner to check federal, state and local laws and ordinances before modifying or customizing his or her motorcycle. It is the exclusive and total responsibility of the motorcycle owner to determine the suitability of this product for his or her use. The user shall assume all legal obligations, personal injury risk and all liability duties and risk associated with the use of this product. Arnott Air Suspension products are designed and intended for the experienced on-road motorcyclists only and intended for closed course operation. Arnott Air Suspension products and kits are designed exclusively for OEM manufactured and equipped motorcycles with no modifications. Any installation of aftermarket or customized components may adversely affect the operation and performance of Arnott Air suspension kits and components and may void the manufacturer’s warranty. These directions are accurate at time of publication. Arnott Inc. reserves the right to revise specifications without notice.

Wiring Diagram

Wiring Diagram

11-MC-SOFTAIL2 REV 4 10/08/2018