installation guide - Performance Auto Parts and Truck Accessories
Contents
1. Must supply clean air free of rust dirt water or other foreign matter _ Must match the 1 8 BSP porting of the Air Locker solenoid _ Mount solenoid within close proximity of the air supply and secure it from the effects of vibration and shock Connect the air supply to the 1 8 BSP inlet port of the solenoid stamped 1 on the solenoid body using thread sealant IMPORTANT ARB cannot warrant your Air Lockers against damage caused as a result of using an alternate air supply If you have any doubts as to the suitability of your air system to use in an Air Locker system consult your ARB distributor m 4 Installing the Air System 4 2 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 _ Account for axle travel when running the line from the axle to a fixed point on the vehicle Leave enough slack in the air line to allow for maximum suspension travel in both directions Not necessary on IFS installations _ Avoid leaving large lengths of air line hanging underneath the vehicle where they may get tangled on rocks sticks etc HINT Cable tying the air line to one of your flexible brake lines will account for axle travel and should help keep your line from getting s2. 5 Mounting amp Connecting the Electrical System 5 1 Mounting the Actuator Switch es Air Locker actuator switch es can be easily panel mounted inside the vehicle 21mm x 36 5mm 0 83 1 44 rectangular cutout NOTE Only attach the cover plate to the face of the switch once the switch has been mounted and wired correctly as the cover plates are designed to be difficult to remove For reasons of safety and for ease of operation the Air Locker actuator switch es should be mounted in a location picked to best suit the operator Make sure you have taken the following points into consideration _ Switch es MUST be mounted and should never be allowed to simply dangle from the wiring loom during vehicle use _ Switch es should be within easy reach of the driver Ideally any Air Locker switch should be able to be operated without physical effort or distraction to the driver _ Switch es should be mounted within the line of sight of the driver so that switch position or OFF can be visually determined by the rocker position and the illumination state _ The position of the switch es should best eliminate any possibility of accidental operation by the driver or one of the passengers _ Switch cutout position s must be located an area with a minimum of 50mm 2 of clearance behind the face of the cutout _ Switch es should not be mounted where they will be exposed to
3. _ Reinstall the Air Locker into the axle housing _ Install the bearing caps oriented as they were marked before they were removed _ Rotate the seal housing so the slot and the tube are pointing Straight out of the axle opening Then install the supplied washers and seal housing bracket with the tab locating in the slot as shown in Figure 7 NOTE Spring washers are be left off the seal housing side bearing cap bolts _ Insert the bearing cap bolts and finger tighten It is not necessary to torque them down at this time _ Lightly hand tighten the seal housing side adjuster nut NOTE You should feel no backlash between the ring and pinion gears once the adjuster nut tightens _ Reverse the adjuster nut counterclockwise 1 4 turn _ Using the appropriate adjuster nut wrench hand tighten the opposite adjuster nut You should now feel some backlash between the ring and pinion gears If not there might be a clearance problem which is binding the carrier Re check the clearance Installing the Air Locker 3 7 Checking the Backlash Set a depth indicator one of the ring gear teeth Fig 8 P 3 4 ys gt s r gt A E s 77 3 a 25 53 ar YA 4 3 4 E i While supporting the pinion gear by holding the drive shaft flange rotate the differential i
4. 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 lf no adequate position be found on existing dashboard panels a surface mounted bracket Fig 13 may be purchased from your ARB Air Locker distributor to suit 1 2 or 3 switches 5 Mounting amp Connecting the Electrical System REAR COMPRESSOR aa y 3 7 5 2 Wiring the Actuator System 5 2 1 Connection to an ARB Air Compressor 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 14 NOTE Refer to your ARB Air Compressor Installation Guide for details on configuring your installation m ISOLATION SWITCH SWITCH 1 L 5 Mounting amp Connecting the Electrical System TO IGNITION RED YEL ARB AIR COMPRESSOR WIRING LOOM TO DASH ILLUMINATION BLU WHT PRESSURE LIMIT SWITCH PLUG IN SOLENOID 1 mm COMPRESSOR PLUG IN RED FITTING 30 AMP FUSE SWITCH TERMINAL IDENTIFICATION 27 SOLENOID 2 PLUG IN gt BATTERY 12V 5 Mounting amp Connecting the Electrical Sy
5. A properly installed Air Locker will have no less than 2mm 1 16 between any part of the differential carrier and the axle housing casting _ Hold the tapered roller bearing cups onto the cones on the carrier _ Carefully insert the carrier assembly into the axle housing so that the ring gear is in mesh with the drive pinion _ Using an automotive feeler gauge check for adequate clearance between the body of the Air Locker and the axle housing casting around the flange cap _ If necessary remove the Air Locker the pinion shaft assembly and pinion support bearing and grind or file the axle housing casting to gain clearance Figure 6 shows an example of relief grinding on one of the ribs near the flange cap HINT Applying a machinists marking compound to the axle housing cast surfaces will show any points of contact after the Air Locker has been removed 5 T te CRS A ae a e RUC TS O i _ Sra y r p 2 ea Figure 6 _ Once the required clearance has been achieved thoroughly clean the axle housing of any grinding dust or other foreign particles ___ Installing the Air Locker 3 6 Final Air Locker Assembly _ If necessary reinstall the pinion shaft assembly and using a torque wrench tighten to the torque specified in your vehicle service manual
6. the wheels and both axle shafts according to your vehicle manufacture s service manual NOTE The axle oil seals are delicate and can be easily damaged Support the weight of the axle shaft when drawing them out of their sockets in the housing 2 4 Marking the Bearing Caps Using a pointed center punch gently mark the bearing caps in 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 HINT Many installers choose to make one punch mark on the left hand side of the left hand bearing cap and one similar punch mark on the housing at close proximity to the cap mark The right hand side is then designated with two punch marks on the right hand side of the cap and two similar punch marks on the housing 2 Removing the Existing Differential 2 5 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 Although ARB must recommend you set backlash according to your service manual guidelines we also advise that you compare the backlash measurements taken here to the recommended backlash settings in your vehicle service manual Measurements found to be outside of your service manual recomme
7. 1 2 1 Tools _ Standard automotive sizes metric and or imperial of sockets wrenches Alan keys and drills _ A dial indicator or other suitable measuring tool for checking ring amp pinion backlash _ A standard automotive feeler gauge _ A razor knife to cut the nylon tubing _ An adjuster nut wrench See your vehicle service manual _ A torque wrench See vehicle service manual for required torque range _ A lubricant drain reservoir A 11 2mm 7 16 drill and 4 NPT tap for bulkhead fitting installation _ An automotive bearing puller 2 jawed is recommended or a differential carrier bearing puller _ A bearing press or arbor press 1 2 2 Supplies _ Thread lubricant sealant compound for pressure fittings e g LOCTITE 567 Teflon paste _ Thread locking compound e g LOCTITE 272 _ Either a replacement gasket or gasket sealant for your differential cover _ 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 2 Removing the Existing Differential 21 Vehicle Support _ Safely secure the vehicle on a hoist We recommend supporting the vehicle on a chassis hoist to keep the differential area ata convenient working height and to leave the wheels and axles free to be rotated and removed _ Once sup
8. ARB AIR OPERATED LOCKING DIFFERENTIALS INSTALLATION GUIDE GM 14 Bolt 10 5 Full Floating Part No 2102114 Revision Date 26 11 04 Copyright 2004 by ARB Corporation Limited No liability is assumed for damages resulting in the use of the information contained herein ARB Air Locker Air Operated 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 ARB 4x4 ACCESSORIES Corporate Head Office 42 44 Garden St Tel 61 3 9761 6622 Kilsyth Victoria Fax 61 3 9761 6807 AUSTRALIA 3137 Australian enquiries sales arb com au North Central and South American enquiries sales arbusa com Other international enquiries exports arb com au WWwW arb com au Table of Contents 1 introduction GO 1 1 Pre Installation Preparation 3 1 2 Tool Kit Recommendations 4 Removing the Existing Differential 5 2 1 Vehicle Support 5 2 2 Differential Fluid Drain 5 2 3 Removing the Axles 6 2 4 Marking the Bearing Caps 6 2 5 Checking the Current Backlash Amount 7 2 6 Removing the Differential Carrier 8 9 3 1 Re Mounting the Ring Gear 9 3 2 Assembling the Seal Housing 10 3 3 Installing the Carrier Bearings 11 3 4 Drilling and Tapping the Bulkhead Port 12 3 5 Checking for Assembly Clearance 13 3 6 Final Air Locker Asse
9. alant or a new standard differential cover gasket for your make of vehicle _ Refill the differential until level with the filler hole Rotate the differential carrier 2 full turns _ Check the oil level and add oil if necessary _ Replace filler plug apply thread sealant to filler plug before inserting if it is a threaded type plug _ Wipe differential housing clean of any oil or grease which may collect dirt or other abrasive particles m 6 Testing amp Final Assembly 6 4 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 _ The air system has been leak tested _ Thread locking compound was used on the ring gear bolts _ All torque settings comply with the vehicle manufacturer s specs and were set with an accurate torque wrench _ Differential fluid complies with ARB recommendations and has been filled to the correct level Axle breather has been checked and found be clear and free flowing and located where it will not be susceptible to water or mud contamination _ All air lines and wiring have been securely cable tied to resist snagging _ Switch es have been securely mounted within operator reach yet well away from danger of accidental engagement _ Switch es function properly and illuminate to indicate th
10. at Air Lockers are engaged _ All operators who to use the Air Locker have read and fully understand the Air Locker Operating amp Service Manual _ The Air Locker Warning Sticker has been located within close proximity of the actuator switch es INSTALLATION PERFORMED BY DATE OF INSTALLATION ODOMETER READING ARB AIR LOCKER SERIAL No 7 Parts List GM 14 Bolt 10 5 Full Floating RD114 7 Parts List 7 2 Itemized Parts List See exploded diagram figure 18 AIR LOCKER MODEL No RD114 ITEM DESCRIPTION PART 01 1 TAPERED ROLLER BEARING 02 1 SEAL HOUSING BRACKET _ 220202 03 1 BONDED SEAL 160706 04 1 CLUTCHGEAR 050805 05 12 RETURN SPRING 150113 _ 06 1 LONGCROSSSHAFT 061501 07 1 SPIDERBLOCK iL 07040 08 4 PINIONTHRUSTWASHER 151113 09 4 PINIONGEAR 1409018 __10 1 SIDEGEAR 1317018 __11_ 3 CROSS SHAFT RETAINING PIN 120601 _ 12 1 TAPERED ROLLER BEARING NOT SUPPLIED __13 2 SEAL HOUSING BRACKET WASHER 151205 _ 14 1 SEALHOUSING ASSEMBLY 082101 _ 15 2 SEALHOUSINGO RING 160233 _ 16 1 FLANGE ASSEMBLY 028601 17 2 SIDE GEAR THRUST WASHER 151007 _ 18 1 SPLINEDSIDEGEAR 131801R_ 19 2 SHORT CROSS SHAFT 061601 __20 1 DIFFERENTIAL CASE 013201 21 2 COUNTERSUNK SCREW 200214 1 BULKHEAD KIT O RING TYPE 3 5 5mm 170105 _ 1 PUSH IN FITTING 5
11. cker and SOLENOID 2 as the air line leading to the front axle Air Locker DUAL Air Locker SYSTEM TO DASH ILLUMINATION TO IGNITION OR ISOLATING SWITCH SOLENOID 1 SOLENOID 2 SWITCH 1 PLUG IN F aH PLUG IN a 5 _ SWITCH 2 m 6 Testing amp Final Assembly 6 1 Leak Testing _ With the vehicle parked and the engine off turn the compressor and wait until the air system is fully charged With the Air Locker s disengaged the air source i e compressor should not have to recharge over time Intermittent recharging without Air Locker use usually indicates a leak at the solenoid fittings or at the compressor tank O ring seal _ Actuate the Air Lockers _ The compressor should not come on again for a period of at least 15min Air system recharging within that time period would indicate that a leak is present in the system If an alternate air source e g an air cylinder or a belt driven air pump is used instead of a compressor the air system will have to be leak tested with a pressure gauge and a shut off valve in series before the solenoid input _ If a leak is found to be present spray a soap and water mixture onto all air fittings in the system while the compressor is fully charged Bubbles should appear at any leak points _ Check that leaky fittings have been adequately tightened Disassemble clean threads and reapply thread sealant if leaking p
12. ersists __ 6 Testing amp Final Assembly 6 2 Testing the Air Locker Actuation To test that your air system electrical system and your Air Locker differential is functioning correctly _ Support the vehicle such that the wheels are free to rotate e g on axle stands a chassis hoist etc Leave the parking brake off the transmission in neutral and the Air Locker switch OFF _ Turn the ignition to the ON position leaving the motor off The large illuminating symbol on the Air Locker switch cover should be OFF _ Turn the compressor or alternate air source on to charge the air Supply up to its maximum pressure _ While supporting the drive shaft flange rotate one wheel by hand _ The wheel should rotate freely and the opposite wheel should be turning in the opposite direction without any resistance or mechanical noise from within the differential _ Turn the Air Locker switch to the ON position The illuminated symbol on the switch cover should light up _ Rotate the same wheel again Both wheels should rotate together _ Turn the switch off again Rotate the same wheel _ The wheels should again rotate in opposite directions 6 3 Re Sealing amp Filling the Differential NOTE Consult the ARB Air Locker Operating amp Service Manual for recommendations on differential lubricant specifications _ Replace the differential cover using gasket se
13. f the solenoid stamped with a 1 onto the nipple and tighten The solenoid should be rotated into a position that does not obstruct any other ports on the compressor manifold The solenoid exhausts compressed air through the center of the black retaining cap when the Air Locker is disengaged Make sure this orifice cannot be obstructed _ Apply Teflon paste to the threads of the 5mm push in fitting and assemble it into the solenoid outlet port stamped 2 and tighten AIR LINE TO DIFFERENTIAL 5mm PUSH IN FITTING 4 Installing the Air System 4 1 2 Connection to an Alternate Air Source 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 _ Must supply a minimum of 85PSI 586kPa The supply must never exceed 105PSI 724 _ The Air source should have a tank capacity that enables it to actuate the Air Locker s in one charge so that no hesitation is experienced when locking one or two differentials HINT A good way to insure that you have the necessary capacity is to make sure you can engage disengage and then reengage your Air Lockers without the air source having to regenerate e g without the compressor turning on to refill the tank
14. mbly 14 3 7 Checking the Backlash 15 3 8 Profiling the Seal Housing Tube 16 3 9 Setting Up the Bulkhead Fitting 17 3 10 Reinstalling the Differential and Axles 19 4 Installing the Air System 4 1 Mounting the Solenoid 20 4 2 Running amp Securing the Air Line 22 4 3 Connection to the Bulkhead Fitting 23 5 Mounting amp Connecting the Electrical System 5 1 Mounting the Actuator Switch es 25 5 2 Wiring the Actuator System 26 6 1 Leak Testing 30 6 2 Testing the Air Locker Actuation 31 6 3 Re Sealing amp Filling the Differential 31 6 4 Post Installation Check List 32 7 1 Exploded Assembly Diagram 33 7 2 Itemized Parts List 34 1 introduction IMPORTANT BEFORE ATTEMPTING TO DISMANTLE YOUR VEHICLE FOR THIS INSTALLATION PLEASE READ THIS INSTALLATION GUIDE IN ITS ENTIRETY AS WELL AS ALL APPLICABLE SECTIONS OF YOUR VEHICLE MANUFACTURER S SERVICE MANUAL 1 1 Pre Installation Preparation This booklet is to be used in conjunction with your vehicle manufacturer s service manual ARB endeavors to account for every possible variation in vehicle model when publishing its installation guides and guides are updated regularly as new model information becomes available however the rapid and globally varied release of some vehicles makes it difficult to insure that your vehicle model has been accurately accounted for In the case of any technical discrepancies between this guide and your service manual we strongly advise that you adhere
15. mm R1 51 8 170201 1 5mm DIA X 6m LONG 170301 _ 1 NIPPLE 1 8 BSP MALE TO MALE 170501 _ 1 SOLENOIDVALVE 180103 1 ACTUATORSWITCH 180209 1 SWITCH COVER FRONT 180210 1 SWITCH COVER REAR 180211 10 CABLETIE CSCS 180301 1 WARNINGLABEL 200 1 BUMPERSTICKER 210102 1 OPERATION amp SERVICE MANUAL 210200 1 INSTALLATION GUIDE 2102114 _ Not illustrated in exploded view ARB
16. n both directions while observing the maximum variation in depth from the indicator i e the highest value minus the lowest value This value is referred to as the ring and pinion backlash _ Rotate the differential carrier 90 and measure again for accuracy Refer to your vehicle service manual for the specified maximum and minimum amounts of backlash IMPORTANT It is critical to set up bearing pre load when a differential is installed Improper pre load will result in undue bearing wear increased stresses in the differential carrier increased running noise and ultimately ring and pinion gear damage _ Adjust the backlash and pre load 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 Remove the seal housing side bearing cap bolts without spring washers and apply thread locking compound to the threads _ Tighten all bearing cap bolts with a torque wrench to the torque specified in your vehicle manufacturer s service manual _ Reinstall the adjuster nut locking tabs m Installing the Air Locker 3 8 Profiling the Seal Housing Tube 1 Without using sharp jagged tools such as pliers your hands are the best tool for this job gently bend the seal housing tube so that it runs closely beside the seal housing bracket wi
17. nagged _ Run the air line all the way from the compressor to the differential before trimming either end of the line to length This will save complications that may arise if the air line has to be removed Make sure the line does not contact sharp edges or abrasive surfaces that may damage the air line over time _ Do not run the air line around tight bends which may kink the air line and restrict or block the air flow _ Keep the air line well away from your vehicle s exhaust components Air lines will melt if subjected to extreme heat _ Do not run more air line than necessary Excess line volume created when coiling the left over hose using unusually large diameter hose etc will increase drain on the compressor tank resulting in the compressor running more often than needed Support the air line by tying it back with cable ties wherever possible _ At the solenoid end of the air line always trim the line to length with a sharp knife to avoid distorting the tube where it plugs into the push in fitting To remove the air line from the push in fitting while holding the flange of the fitting out push the air line into the fitting as far as possible then press the flange inward then pull the air line free of the fitting mm 4 Installing the Air System _ To attach the air line to the push in fitting of the solenoid insert the line firmly into the fitting pull outward on the flange of the fi
18. ndations may indicate the need to deviate from those settings in order to achieve quiet running with a good contact mark Refer to your vehicle service manual or your local authorized ARB installer for more information Set a depth indicator on one of the ring gear teeth as in figure 2 _ While supporting the pinion gear by holding the drive shaft flange rotate the differential in both directions while observing the maximum variation in depth from the indicator i e the highest value minus the lowest value This value is referred to as the ring and pinion backlash _ Rotate the differential carrier 90 and measure again for accuracy Record the average of all measurements 2 Removing the Existing Differential 2 6 Removing the Differential Carrier _ Remove both adjuster nut locking tabs _ Loosen both bearing caps _ Using the appropriate adjuster nut wrench loosen the adjuster nuts at least half a turn _ Remove the bearing caps _ Carefully remove the differential carrier The differential carrier is heavy and quite difficult to handle when covered in oil Take care not to drop it Installing the Air Locker 3 1 Re Mounting the Ring Gear _ Remove the bolts that hold the ring gear in place NOTE Some GM ring gear bolts are left hand threaded _ Using a plastic or copper hammer tap in a circle around the ring gear to separate it from the o
19. ported off the ground release the parking brake and leave the vehicle in neutral Chock the wheels if necessary 22 Differential Fluid Drain HINT This is a good time to check for metal particles in your oil on your drain plug or in the bottom of the housing which may indicate a worn bearing or differential component _ Clean around the differential cover plate seal to prevent dirt from entering the differential _ Position a fluid drain reservoir under the differential and loosen all differential cover plate retaining bolts _ If a drain plug exists remove it and completely drain all differential oil from the housing _ If no drain plug exists then the oil can be drained by gently prying the cover away at the bottom until oil runs out HINT Ifa drain plug does not exist then it would be a good idea to drill and tap for a tapered oil drain plug to assist with future oil changes _ Once drained remove the differential cover plate 2 Removing the Existing Differential 23 Removing the Axles IMPORTANT Collision damage or heavy off road use of your vehicle in the past may have resulted in some degree of bending in the axle 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 installing your Air Locker _ Remove
20. riginal differential carrier _ Apply a thin film of high pressure grease to the ring gear shoulder of the Air Locker to prevent seizing _ Thoroughly clean any thread locking compound or other foreign matter from the holes of the ring gear the threads of the ring gear bolts and the mating surfaces between the ring gear and the Air Locker flange HINT Stoning the ring gear mounting face before installation will remove any high spots around the threads _ Heat the ring gear to between 80 and 100 C 175 212 F in hot water or in an oven to slightly expand the gear and facilitate assembly NOTE NEVER HEAT GEARS WITH A FLAME This could damage the hardened surface of the gear and result in premature wear or failure _ Dry the gear and bolt holes with compressed air if wet _ Install the ring gear onto the Air Locker by aligning the bolt holes and then gently tapping it around in a circle with a soft mallet Avoid using the bolts to pull down the ring gear as this puts excess strain on the bolts and the differential flange _ Apply a thread locking compound to the thread of each ring gear bolt before inserting it Do not apply the compound directly into the threaded hole as this could prevent the bolt from reaching its full depth _ Tighten the ring gear bolts in a star pattern with a torque wrench according to your vehicle manufacturer s specified torque Installing the Air Locker 3 2 Assembling
21. ssary 1 Apply a thin film of high pressure grease to both bearing journals of the Air Locker to prevent seizing 1 Using a bearing press or arbor press press one of the bearing cones onto the Air Locker bearing journal with the seal housing in place until the bearing seats firmly against the bearing journal shoulder As shown in Figure 4 Figure 4 a Invert the Air Locker and press the other tapered roller bearing cone onto the opposite bearing journal of the differential carrier until the bearing seats firmly against the bearing journal shoulder m Installing the Air Locker 3 4 Drilling and Tapping the Bulkhead Port An airline port must be drilled and tapped through the axle housing casting to mount the bulkhead fitting into _ Cover the drive pinion and axle tube area with rags to protect them from metal filings Mark a spot the axle housing casting in the position shown Figure 5 _ Drill through the housing square to the outside surface using a 11 2mm 7 16 drill _ Tap the hole from the outside using a 1 4 NPT pipe tap Remove any sharp edges from the hole that may chip off and fall into the housing m Installing the Air Locker 3 5 Checking for Assembly Clearance IMPORTANT Some axle housing castings will require modification for correct Air Locker installation
22. stem 5 2 2 Connection to an Alternate Air Source When connecting the actuation switch to an alternate air source the switch es should be wired according to figures 16 and 17 depending on whether one or two Air Lockers will be installed in the vehicle 5 2 2 1 Single Air Locker System _ If only one Air Locker is to be installed in the system the switch and solenoid should be wired according to figure 16 regardless of whether the Air Locker has been installed in the front or rear axle of the vehicle _ Attach the appropriate switch cover i e FRONT or REAR to the switch NOTE Refer to Figure 15 for the correct switch terminal identification and switch orientation SINGLE Air Locker SYSTEM SOLENOID 1 TO DASH ILLUMINATION TO IGNITION OR ISOLATING SWITCH 0 m 5 Mounting amp Connecting the Electrical System 5 2 2 2 Dual Air Locker System _ If two Air Lockers are to be installed in the system ARB recommends that the switches and solenoids be wired according to figure 17 For safety reasons this configuration allows SOLENOID 2 to be actuated only if SOLENOID 1 is already on _ Attach the REAR AIR LOCKER switch cover to SWITCH 1 and the FRONT AIR LOCKER switch cover to SWITCH 2 NOTE Refer to Figure 15 for the correct switch terminal identification and switch orientation _ Configure SOLENOID 1 as the air line leading to the rear axle Air Lo
23. talling the Air Locker CENTER COMPRESSION NUT lt _ BULKHEAD BODY O RING DIFFERENTIAL HOUSING SEAL HOUSING TUBE TO SEAL HOUSING Excessive tightening of the center compression nut is not necessary to form a good seal around the tube and may damage the O ring the seal housing tube or the threads of the compression nut NOTE sure the seal housing tube is all of the way into the center compression nut while you are tightening it NOTE Use a feeler gauge to check for clearance between the seal housing tube and the seal housing bracket or any moving parts m Installing the Air Locker 3 10 Reinstalling the Differential and Axles _ Inspect the condition of the axle seals and replace if necessary _ Insert both axles fully into the housing engaging splines and then gently tap them inward NOTE Be careful not to damage the axle shaft oil seals when installing the axle Support the axle s entire weight where possible _ Torque down the axle bolts to manufactures specifications m 4 Installing the Air System 4 1 Mounting the Solenoid 4 1 1 Connection to an ARB Air Compressor Fig 11 Remove one of the 1 8 BSP plugs from its port in the compressor manifold _ Apply Teflon paste to the nipple 1 8 X 1 8 BSP and insert it into the port and tighten Apply Teflon paste to the free end of the nipple _ Assemble the inlet port side o
24. the Seal Housing Make sure the grooves and airway of the seal housing are clean and free from any contaminants e g water dirt metal filings _ Inspect the seal housing O rings supplied for dirt damage or other conditions which might cause leaks Generously lubricate the O rings with oil prior to assembly then insert them into the grooves of the seal housing NOTE When assembling the O rings be careful not to leave them twisted when seated in the grooves as this could cause excessive wear and leakage Lubricate the seal housing running surface on the Air Locker carrier with oil _ Orientate the seal housing as shown in Figure with the seal housing flange closest to the Air Locker _ Carefully install the seal housing by sliding it all of the way onto the seal housing running surface with a gentle twisting motion A twisting motion i e a slight rotation while pressing the seal housing on will allow the O rings to engage gently and prevent them from twisting Twisted O rings will result in pre mature O ring wear and oil contamination in the air system due to the helical shape formed by the O ring mould line Installing the Air Locker 3 3 Installing the Carrier Bearings _ If the tapered roller bearings from the original differential carrier are to be reused then remove them with an automotive bearing puller and inspect them for damage and or wear and replace them if nece
25. thout contacting it and through the tapped bulkhead port as shown in Figure 9 NOTE _ It is a good idea to keep the tube away from the axle housing casting as any contact due to vibration or shock may wear the tube and eventually cause a leak m Installing the Air Locker 3 9 Setting Up the Bulkhead Fitting _ Trim the seal housing tube that is extended through the bulkhead port to approximately 8mm 5 16 long using an automotive brake line tubing cutter NOTE Never use a hacksaw to cut the seal housing tube as this will leave metal filings in the air system _ Apply thread sealant to the threads of the bulkhead body _ Screw the bulkhead body into the tapped hole and tighten _ Wipe the area clean of any excess thread sealant inside and outside of the housing _ From the outside of the housing assemble the small O ring over the top of the short length of seal housing tube protruding through the bulkhead fitting _ While holding the seal housing tube into the bulkhead fitting insert the small drilled 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 lightly tighten Be sure to insert the correct end of the center compression nut into the bulkhead body The thread has been partially relieved on the bulkhead side of the center compression nut to visually identify its orientation Fig 10 m Ins
26. to the specifications and techniques as documented in your service manual 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 Many ARB distributors around the world have been fully instructed in Air Locker installations by ARB and have gained a wealth of experience and skill from years of performing similar installations Once you begin this installation your vehicle will be immobile until all steps of the installation are complete Make sure your Air Locker kit is the correct model for your vehicle and that it contains all of the parts listed on back cover of this booklet Also be sure you have appropriately equipped yourself with all the necessary tools parts and materials to complete this installation See section 1 2 Recommendations and that you have allowed for an appropriate amount of vehicle down time HINT Place a mark inside each of the _ symbols as you complete each step It is very important NOT to miss any of the steps 1 introduction 1 2 Tool Kit Recommendations Below is a list of tools and supplies you may need to complete this installation Requirements for your vehicle may vary Please consult your vehicle service manual for additional recommendations
27. tting while holding the line as far into the fitting as possible and then gently pull outward on the air line to clamp the line in place 4 3 Connection to the Bulkhead Fitting _ In the case of an IFS axle assembly or in the case that the axle assembly has been completely removed from the vehicle the assembly will have to be remounted in order to position the bulkhead fitting in its correct location for air line access _ Trim the air line to length using a sharp knife _ Insert the support spring over the end of the air line small end first Fig 12 _ Insert the outer compression nut over the air line _ Insert the 5mm 0 197 ferrule over the end of the air line Leave approx 5mm of tubing between the ferrule and the end of the tube SUPPORT SPRING OUTER COMPRESSION NUT FERRULE 5 0mm 0 197 SUPPORT TUBE _ Insert the support tube all the way into the end of the air line am 4 Installing the Air System HINT If the support tube is too difficult to insert place the end of the air line into a cup of boiled water to soften the tubing _ Insert the tube end all the way into the center compression nut _ Screw on the outer compression nut and tighten The ferrule and support tube are now permanently attached Assemble the support spring over the outside of the outer compression nut _ Secure any loose sections of tube with a cable tie
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