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C-2527 REV 2 05/24/13
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.
It is equally important to be aware of all necessary safety measures while installing your new Air
Ride Suspension. 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”
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 ride system
prior to disassembly. Do not allow dirt or grease to enter the system. Always wear
standard protective hand, ear, and eye protection when servicing the air
suspension system.
Kit Contains:
PARTS LIST
P/N QTY DESCRIPTION
29-4121 2 SHOCK ABSORBERS, FRONT
21-5126 2 SHOCK ABSORBERS, REAR
14-3936 2 REAR COIL SPRINGS
21-6402 1 ELECTRONIC BYPASS MODULE KIT
Additional hardware needed, not supplied- hardware to cap the AHC lines.
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*Removal and installation is only to be performed by fully qualified personnel.
*CAUTION: Damage to the vehicle and shock assembly can be incurred if work is
carried out in a manner other than specified in the instructions or in a different sequence.
COIL SPRING AND REAR SHOCK ABSORBER REMOVAL/INSTALLATION:
Kit Contains:
PARTS LIST
P/N QTY DESCRIPTION
21-5126 2 REAR AIR SHOCK
14-3936 2 REAR COIL SPRINGS
21-5126 14-3936
Air Shock Removal/Installation:
The ignition must remain switched off during the shock removal and replacement.
Use lifting platform (hoist) that is capable of raising the body separately from the
wheels, lift body at the lifting points prescribed by the vehicle manufacturer.
Vehicle slippage can cause danger to life and limb.
1.0 Raise vehicle.
2.0 Remove rear tires.
NOTE: Refer to Figure B for steps 3.0- 9.0 (air shock removal and installation).
3.0 Disconnect the shock sensor connector at the top of the shock (1) (Removal
only.
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4.0 Disconnect the air line by turning clip 90 . Locate and disconnect ride height
sensor.
5.0 Remove the upper air shock nut and bolt.
6.0 Disconnect brake line which is bolted to rear axle differential.
7.0 Disconnect sway bar and link. Have a floor jack under axle.
8.0 Remove the lower air shock nut and bolt.
9.0 Remove air shock, (Install Spring before completing shock Install).
10.0 Removal complete, installation is in the reverse order of removal. Install upper
shock bolt, and allow shock to hang until spring installation is complete. Torq ue
shock bolts to 70 ft-lbs.
FIGURE B
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Coil Spring Installation:
1.0 Install the coil springs onto the rear axle.
2.0 Using a floor jack raise the rear axle.
3.0 Install the lower shock absorber retaining nut and bolt to the rear axle. Tighten
the lower shock absorber retaining nut and bolt to 95 N-m (70 lb-ft).
4.0 Replace tire and wheel assembly. Tighten wheel hub bolt nuts to 115-142 N-m
(85-105 lb-ft).
5.0 Remove all safety stands and lower vehicle.
WARNING: Make sure to tighten all wheel hub bolt nuts to 115-142 Nm (85-
105 lb-ft). Failure to heed to this warning could result in vehicular damage
and serious bodily injury.
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Front Shock Installation:
WARNING: Before disassembling the front suspension refer to the vehicle
remanufacturer’s Service Manual for proper procedures. Failure to heed to this warning could
result in vehicular damage and serious bodily injury.
PARTS LIST
P/N QTY DESCRIPTION
29- 4121 2 SHOCK ABSORBERS, FRONT
29- 4121
Removal:
1.0 Raise and support the vehicle.
2.0 If equipped with selectable ride, disconnect the Real Time Damping (RTD) link rod
from the sensor. Grasp the connector lock tabs. Rotate the connector lock tabs (1)
and (2) counter-clockwise until the connector is unlocked. Disengage the
connector from the tennon by firmly pulling the connector up. Hold the tennon end
with a wrench while removing the nut. Remove the nut.
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FIGURE 10-2 FIGURE 10-3
3.0 Remove the upper insulator.
4.0 Remove the shock absorber mounting bolts at the lower control arm. Remove the
shock absorber through the lower control arm from below. (FIGURE 10-3)
Installation:
1.0 Support the lower control arm with a suitable jack in order to align the tennon with
the mounting hole if equipped with selectable ride.
2.0 Inst all shock absorber through the lower control arm from below .
3.0 Connect tennon through the mounting hole in the upper spring pocket . (FIGURE
10-4)
4.0 Align the shock absorber with the mounting hole in the lower control arm.
(FIGURE 10-5)
5.0 Inst all shock absorber mounting bolt to the lower control arm. Tighten to 70 ft. lbs.
(25 Nm). (FIGURE 10-5)
6.0 Connect upper insulator to the shock absorber . (FIGURE 10-3)
7.0 Inst all nut to the tennon end. Do not tighten the nut.
8.0 Remove the safety stands.
9.0 Lower the vehicle. Hold the tennon end with a wrench while torquing the nut.
Tighten the nut to 15 ft. lbs. (20 Nm).
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SPOOFER INSTALLATION:
29-5138 21-5127 29-5138 ( FUSE 5 A )
PARTS LIST
P/N QTY DESCRIPTION
21-6402 1 SPOOFER
29-5138 1 FUSE 5 A
1.0 REMOVE (3) CONNECTORS FROM AIR RIDE CONTROLLER. (FIGURE A)
2.0 CUT ORANGE AND BLACK WIRES (PINS “D” AND “E”), FROM GREY
CONNECTOR. (FIGURE B
FIGURE A FIGURE B
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FROM
TO
BLUE
BLUE
RED
ORANGE
BLACK
BLACK
3.0 LOCATE PIN B-8 ON PINK 24 PIN CONNECTOR AND CUT WIRE.
(FIGURE C)
4.0 CONNECT TO THE WIRING HARNESS SIDE! (CHART10-4) (FIGURE D)
SPOOFER
SIDE
CHART 10-4
5.0 CONTROLLER (FIGURE E)
6.0 CONTROLLER I.D. PLATE (FIGURE F)
7.0 DO NOT RECO NNE CT AIR RIDE CONTROLLER!
8.0 REPLACE FACTORY 25 A FUSE WITH SUPPLIED 5 A FUSE.
FIGURE C FIGURE D
HARNESS SIDE
WIRING
FIGURE E FIGURE F
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