INSTALLATION GUIDE RD153 Part No. 2102153 Revision Date 22/10/2009 Copyright © 2009 by ARB Corporat
2 Removing the Existing Differential 8 2.5 Checking the Current Backlash Amount IMPORTANT: This step is a precautionary measure recommended
2 Removing the Existing Differential 9 2.6 Removing the differential carrier F Remove the adjuster nut locking tabs. F Remove the bearing cap
3 Installing the Air Locker 10 3.1 Mounting the Ring Gear F Remove the bolts that hold the ring gear in place. F Using a plastic or copper ha
3 Installing the Air Locker 11 Figure 4. 3.2 Installing the Carrier Bearings NOTE : If you are installing
3 Installing the Air Locker 12 Figure 5. 3.3 Drilling and Tapping the Bulkhead Port An air
3 Installing the Air Locker 13 F Cover the drive pinion area with a rag to protect it from metal filings. F Secure the differential housing to
3 Installing the Air Locker 14 3.5 Checking the Backlash F Set a depth indicator on one of the ring gear teeth. (Fig.7.) F While supporting
3 Installing the Air Locker 15 3.6 Installing the Seal Housing F Make sure the grooves and airway of the seal housing are clean and free fr
3 Installing the Air Locker 16 F Install the spring clip by first hooking both ends of the clip into the small aligned cutouts of the seal housi
3 Installing the Air Locker 17 IMPORTANT: The seal housing must still be able to freely float after the tube is connected to the bulkhead fitt
No liability is assumed for damages resulting in the use of the information contained herein. ARB AIR LOCKER Locking Differentials and AIR LOCKER a
3 Installing the Air Locker 18 Figure 10. NOTE : Excessive tightening of the center compression nut is not necessary to fo
3 Installing the Air Locker 19 3.8 Profiling the Seal Housing Tube F With the seal housing tube now firmly secured into the bulkhead fitting
3 Installing the Air Locker 20 Figure 13. IMPORTANT: In order for the seal housing to float and self center on the beari
3 Installing the Air Locker 21 3.9 Bench Testing the Air Locker F To test the Air Locker, when 620kPa [90 PSI] shop air is applied to the sea
3 Installing the Air Locker 22 3.10 Reinstalling Differential and Axles F Undo the retaining pin on the long cross shaft, and remove the lon
3 Installing the Air Locker 23 F Select the two C-clips which are closest to the thickness you calculated above without going over, and replace
4 Installing the Air System 24 4.1 Mounting the Solenoid 4.1.1 Connection to an ARB Air Compressor (Fig.15.) F Remove one of the 1/8” BS
4 Installing the Air System 25 4.1.2 Connection to an Alternate Air Source For ease of installation, quality of air supply, and a high level
4 Installing the Air System 26 4.2 Running and Securing the Air Line The path taken by the air line from your air source (i.e., compressor)
4 Installing the Air System 27 NOTE : To remove the air line from the push-in fitting; pull outward on the flange of the fitting, push the ai
Table of Contents: 1 1 Introduction 31.1 Pre-Installation Preparation 31.2 Tool-Kit Recommendations 4 2 Removing the Existing Differe
4 Installing the Air System 28 HINT : If the tube is too difficult to push on, place the end of the air line into a cup of boiled water to s
5 Mounting & Connecting the Electrical System 29 5.1 Mounting the Actuator Switch(es) Air Locker actuator switch(es) can be easily pane
5 Mounting & Connecting the Electrical System 30 5.2 Wiring the Actuator System 5.2.1 Connection to an ARB AIR COMPRESSOR When wiri
5 Mounting & Connecting the Electrical System 31 Figure 19. 5.2.2 Connection to an Alternate Air Source When connecting the
5 Mounting & Connecting the Electrical System 32 5.2.2.2 Dual Air Locker System F If two Air Lockers are to be installed in the system
6 Testing & Final Assembly 33 6.1 Leak Testing F With the vehicle parked and the engine off, turn the compressor on and wait until the a
6 Testing & Final Assembly 34 F Turn the compressor (or alternate air source) on to charge the air supply up to its maximum pressure. F Rota
6 Testing & Final Assembly 35 6.4 Post-Installation Check List Now that the Air Locker installation has been completed, ARB recommends t
6 Testing & Final Assembly 36
7 Parts List 37 7.1 Exploded Assembly Diagram (See itemized parts list overleaf) Figure 22.
7 Parts List 38 7.2 Itemized Parts List (See exploded diagram Figure 22.) AIR LOCKER MODEL No. : RD153 ITEM # QTY DESCRIPTION
3 IMPORTANT : BEFORE ATTEMPTING TO DISMANTLE YOUR VEHICLE FOR THIS INSTALLATION, PLEASE READ THIS INSTALLATION GUIDE IN ITS ENTIRETY, AS WELL AS
2 Removing the Existing Differential 4 1.2 Tool-Kit Recommendations Below is a list of tools and supplies you may need to complete this ins
2 Removing the Existing Differential 5 2.1 Vehicle Support F Safely secure the vehicle on a hoist. We recommend supporting the vehicle on a c
2 Removing the Existing Differential 6 F Gently tap axles outward and remove them from the differential center. NOTE : Rubber oil seals can
2 Removing the Existing Differential 7 2.4 Marking the Bearing Caps F Using a small pointed center punch, gently mark the bearing caps in a w
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