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Related Manuals for ARB Airlocker RD149
Summary of Contents for ARB Airlocker RD149
- Page 1 RD149 NISSAN M226, 32 SPLINE AIR OPERATED LOCKING DIFFERENTIAL INSTALLATION GUIDE...
- Page 2 No liability is assumed for damages resulting in the use of the information contained herein. ARB AIR LOCKER Locking Differentials and AIR LOCKER are trademarks of ARB Corporation Limited. Other product names used herein are for identification purposes only and may be trademarks of their respective owners.
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Page 3: Table Of Contents
Table of Contents: 1 Introduction 1.1 Pre-Installation Preparation 1.2 Tool-Kit Recommendations 2 Removing the Existing Differential 2.1 Vehicle Support 2.2 Differential Fluid Drain 2.3 Removing the Axles 2.4 Marking the Bearing Caps 2.5 Checking the Current Backlash Amount 2.6 Removing the Differential Carrier 3 Installing the Air Locker 3.1 Mounting the Ring Gear 3.2 Installing the Carrier Bearings... -
Page 5: Introduction
Although your ARB Air Locker comes complete with all the step by step instructions you will need to supplement your vehicle manufacturer’s service manual and install your new differential, ARB recommends that you have your Air Locker installed by a trained professional. -
Page 6: Tool-Kit Recommendations
A gasket sealant or replacement gasket for your third member. A sufficient volume of differential oil to completely refill your housing. (See the ARB Air Locker Operating and Service Manual for recommended lubricants) A soap and water mixture to test for air leaks. -
Page 7: Removing The Existing Differential
Any misalignment of the axle tubes may result in excessive wear and/or failure of your differential and axle shafts. ARB strongly recommends that you have your axle assembly inspected for concentricity and straightness before... -
Page 8: Marking The Bearing Caps
2 Removing the Existing Differential Marking the Bearing Caps Using a small pointed center punch, gently mark the bearing caps in a way that will enable you to know which cap is ‘LEFT’ and which cap is ‘RIGHT’, which way is ‘UP’ and which way is ‘DOWN’. (Fig.1.) ... -
Page 9: Checking The Current Backlash Amount
2 Removing the Existing Differential Checking the Current Backlash Amount IMPORTANT: This step is a precautionary measure recommended by ARB due to the fact that some after market ring and pinion sets have been manufactured to run with different backlash settings than those specified by your vehicle manufacturer. -
Page 10: Removing The Differential Carrier
2 Removing the Existing Differential Removing the differential carrier Remove the adjuster nut locking tabs. Remove the bearing caps. Loosen the adjuster nuts. Carefully remove the differential carrier from the housing. Remove the tapered roller bearings from the differential carrier with a bearing puller. -
Page 11: Installing The Air Locker
3 Installing the Air Locker Mounting the Ring Gear Remove the bolts that hold the ring gear in place. Using a plastic or copper hammer, tap in a circle around the ring gear to separate it from the differential carrier. ... -
Page 12: Installing The Carrier Bearings
3 Installing the Air Locker Figure 4. Installing the Carrier Bearings Apply a thin film of high pressure grease to the bearing journals of the Air Locker, then press the bearing cones onto the bearing journals as shown in Figure 5. Figure 5. -
Page 13: Drilling And Tapping The Bulkhead Port
3 Installing the Air Locker Drilling and Tapping the Bulkhead Port An air line port must be drilled and tapped through the differential housing to mount the bulkhead fitting into. Mark a spot on the top of the outside of the differential housing that will be clear of the ring gear position once the seal housing tube has been installed. -
Page 14: Assembling The Seal Housing
3 Installing the Air Locker Assembling the Seal Housing Figure 7. Make sure the grooves and airway of the seal housing are clean and free from any contaminants (e.g. water, dirt, metal filings, etc.). Inspect the seal housing O-rings (supplied) for dirt, damage or other conditions which might cause leaks. -
Page 15: Setting The Backlash
3 Installing the Air Locker Setting the Backlash Assemble the remaining bearing cup onto the right-hand side of the Air Locker. Loosen the adjuster nuts in the housing so that they are as far apart as possible. Insert the Air Locker into the housing and rotate it until it is fully in mesh with the pinion gear, with the seal housing tube pointing straight out of the housing. - Page 16 3 Installing the Air Locker Adjust the backlash using an adjuster nut wrench to tighten or loosen the adjuster nuts as required. (Refer to your vehicle service manual.) Recheck backlash as before, repeating this procedure until backlash is within the specified amount. IMPORTANT: It is critical to set up bearing pre-load when a differential is installed.
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Page 17: Setting Up The Bulkhead Fitting
3 Installing the Air Locker Setting up the Bulkhead Fitting Apply thread sealant to the outside threads of the bulkhead body. Screw the bulkhead body into the tapped hole, and lightly tighten using a 14mm [9/16”] spanner. Wipe the area clean of any excess thread sealant (inside and outside of the housing). - Page 18 3 Installing the Air Locker While holding the seal housing tube into the bulkhead fitting, insert the chamfered end of the center compression nut over the extended tube as shown in the assembly diagram (Fig. 10.), and screw it into the bulkhead body, and tighten using Pozidriv #3 screwdriver.
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Page 19: Profiling The Seal Housing Tube
3 Installing the Air Locker Profiling the Seal Housing Tube With the seal housing tube now firmly secured into the bulkhead fitting, bend the tube so that it closely follows the profile of the differential. (Fig.11.). Check that the contour of the tube will not interfere with the bearing caps, the Air Locker, the ring gear or the axle housing. -
Page 20: Bench Testing The Air Locker
NOTE : An accurate way to test for air leaks is to fit a shut-off valve to an air pressure gauge (Available as ARB part #ALTG01). Charge with shop air until 620 KPA [90 PSI] is reached, shut the valve off, disconnect the air hose, and watch to see if there is any drop in pressure. -
Page 21: Reinstalling The Differential & Axles
3 Installing the Air Locker Reinstalling Differential and Axles Install the axles and cover plate as detailed in your vehicle service manual. NOTE : Be careful not to damage the axle shaft oil seals when installing the axle. Support the axle’s entire weight where possible. -
Page 22: Installing The Air System
4 Installing the Air System Mounting the Solenoid Connection to an ARB Air Compressor (Fig.13.) 4.1.1 Remove one of the 1/8” BSP plugs from its port in the compressor tank. Apply Teflon paste to the 1/8” BSP nipple on the solenoid and insert it into the port and tighten. - Page 23 For ease of installation, quality of air supply, and a high level of dependability from your Air Locker(s), ARB strongly recommends use of a genuine ARB Air Compressor, however, the Air Locker air system can be operated on any alternate air source that meets each of the following guidelines: ...
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Page 24: Running & Securing The Air Line
4 Installing the Air System Running and Securing the Air Line The path taken by the air line from your air source (i.e., compressor) to your Air Locker is unique to your vehicle and the position of your air source. Plan ahead carefully when running the air line and always follow these guidelines: ... -
Page 25: Connection To The Bulkhead Fitting
4 Installing the Air System NOTE : To remove the air line from the push-in fitting; push the air line as far into the fitting as possible and hold, push inward on the flange, and then pull the air line free of the fitting. - Page 26 4 Installing the Air System Push the airline into the compression fitting body and screw the outer nut down onto it. Using a 12mm spanner, tighten the outer nut onto the compression fitting body. NOTE : Some force is required to crush the ferrule, however the outer compression nut will tighten against a stop.
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Page 27: Mounting & Connecting The Electrical System
Switch(es) should not be mounted where they will be exposed to water (e.g., in the lower section of an inner door panel). ARB recommends that you apply the Air Locker Warning Sticker (ARB part # 210101) within close visual proximity of the switch location. -
Page 28: Wiring The Actuator System
Connection to an ARB AIR COMPRESSOR 5.2.1 When wiring the Air Locker actuator switch(es) and solenoid(s) to an ARB Air Compressor, all connections can easily be set up directly from the supplied wiring loom. (Fig.16.) NOTE : 180409 model loom shown for reference only. Refer to your ARB Air Compressor Installation Guide for details on configuring your installation. - Page 29 5 Mounting & Connecting the Electrical System SWITCH TERMINAL IDENTIFICATION Figure 17. Connection to an Alternate Air Source 5 .2.2 When connecting the actuation switch to an alternate air source, the switch(es) should be wired according to figures 18. and 19. depending on whether one or two Air Lockers will be installed in the vehicle.
- Page 30 5 Mounting & Connecting the Electrical System Dual Air Locker System 5.2.2.2 If two Air Lockers are to be installed in the system, ARB recommends that the switches and solenoids be wired according to figure 19. For safety reasons, this configuration allows SOLENOID 2 to be actuated only if SOLENOID 1 is already on.
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Page 31: Testing & Final Assembly
6 Testing & Final Assembly Leak Testing With the vehicle parked and the engine off, turn the compressor on and wait until the air system is fully charged. NOTE : With the Air Locker(s) disengaged, the air source (i.e., compressor) should not have to recharge over time. -
Page 32: Filling The Differential
Rotate the same wheel. The wheels should again rotate in opposite directions. Filling the Differential NOTE : Consult the ARB Air Locker Operating & Service Manual for recommendations on differential lubricant specifications. Refill the differential until level with the filler hole. -
Page 33: Post-Installation Check List
6 Testing & Final Assembly Post-Installation Check List Now that the Air Locker installation has been completed, ARB recommends that you take the time to complete the following check list just to insure that you haven’t missed any of the vital steps. - Page 34 6 Testing & Final Assembly...
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Page 35: Parts List
7 Parts List RD149 Nissan M226,32 SPL,10 bolt RG Exploded Assembly Diagram (See itemized parts list overleaf) Figure 20. Specifications 32 tooth, Ø35.8mm [1.41”] Axle Spline Ratio Supported 141.3mm [5.56”] Ring Gear ID 226mm [8.9”] Ring Gear OD 10 bolts on Ø168.3mm [6.63”] Ring Gear Bolts Ring Gear Torque 198Nm [146 ft-lb]... -
Page 36: Itemized Parts List
All diffs produced before serial #17070001 came with 5mm air connection system. For information contact ARB. For models with 12 bolt Ring Gear refer to RD159 (Section 2.159). Part No. 2102149 Revision 26/11/2020 Copyright © 2015 by ARB Corporation Limited...
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