Arb RD81 Manuel d'utilisateur

INSTALLATION GUIDE RD81 FORD 8.8”, 31 SPLINE Part No. 210281Revision Date 02/06/06Copyright © 2006 by ARB Corpo

2 Removing the Existing Differential 8 2.6 Spreading the Differential Housing IMPORTANT: Spreading the differential housing with a differenti

2 Removing the Existing Differential 9 IMPORTANT: Some Salisbury axles were manufactured with poor oil drainage between the axle tubes and th

3 Approximate Backlash Shimming 10 3.1 Bench Measurement In order to reproduce a similar pre-load and ring and pinion backlash in your Air Lo

3 Approximate Backlash Shimming 11  Using a caliper or similarly accurate measurement method (i.e., able to take accurate measurements withi

3 Approximate Backlash Shimming 12 3.2 Calculation and Selection of Pre-Load Shims Ideally, the measurement you recorded as ‘C’ from the Air

4 Installing the Air Locker 13 4.1 Mounting the Ring Gear IMPORTANT: Higher ratio gearing uses deeper (thicker) ring gears with teeth that e

4 Installing the Air Locker 14 4.2 Installing the Carrier Bearing  Apply a thin film of high pressure grease to the bearing journal of the

4 Installing the Air Locker 15 4.3 Drilling and Tapping the Bulkhead Port An airline port must be drilled and tapped through the differenti

4 Installing the Air Locker 16  Tap the hole from the outside using a ¼” NPT pipe tap.  Remove any sharp edges from the hole that may chip-of

4 Installing the Air Locker 17  Insert and hold the Air Locker into the differential housing. NOTE : Be careful not to bend or damage the

No liability is assumed for damages resulting in the use of the information contained herein. ARB AIR LOCKER Locking Differentials and AIR LOCKER ar

4 Installing the Air Locker 18  Install the bearing caps oriented as they were marked before they were removed, and tighten the bearing cap bol

4 Installing the Air Locker 19 4.5.1 Re-Shimming the Backlash NOTE : This step is only necessary when adjusting for incorrect backlash.

4 Installing the Air Locker 20 Figure 12. Figure 13.

4 Installing the Air Locker 21 4.7 Setting up the Bulkhead Fitting  Trim the seal housing tube that is extended outside the differential hou

4 Installing the Air Locker 22 Figure 14. NOTE : Excessive tightening of the center compression nut is not necessary to f

4 Installing the Air Locker 23 4.8 Reinstalling the Axles  Unscrew and remove the long cross shaft retaining pin with a 5mm hex key. NOT

5 Installing the Air System 24 5.1 Mounting the Solenoid 5.1.1 Connection to an ARB Air Compressor (Fig.15.)  Remove one of the 1/8”

5 Installing the Air System 25 5.1.2 Connection to an Alternate Air Source For ease of installation, quality of air supply, and a high leve

5 Installing the Air System 26 5.2 Running and Securing the Air Line The path taken by the air line from your air source (i.e., compressor)

5 Installing the Air System 27  To attach the air line to the push-in fitting of the solenoid; insert the line firmly into the fitting, pull o

Table of Contents: 1 1 Introduction 31.1 Pre-Installation Preparation 31.2 Tool-Kit Recommendations 4 2 Removing the Existing Differ

5 Installing the Air System 28  Insert the 5mm [0.197”] ferrule over the end of the air line. Leave approx. 5mm of tubing between the ferrule

6 Mounting & Connecting the Electrical System 29 6.1 Mounting the Actuator Switch(es) Air Locker actuator switch(es) can be easily pane

6 Mounting & Connecting the Electrical System 30 6.2 Wiring the Actuator System 6.2.1 Connection to an ARB Air Compressor When wir

6 Mounting & Connecting the Electrical System 31 6.2.2 Connection to an Alternate Air Source When connecting the actuation switch to an

6 Mounting & Connecting the Electrical System 32 6.2.2.2 Dual Air Locker System  If two Air Lockers are to be installed in the syste

7 Testing & Final Assembly 33 7.1 Leak Testing  With the vehicle parked and the engine off, turn the compressor on and wait until the a

7 Testing & Final Assembly 34  Turn the ignition to the ‘ON’ position (leaving the motor off). The large illuminating symbol on the Air Lo

7 Testing & Final Assembly 35 7.4 Post-Installation Check List Now that the Air Locker installation has been completed, ARB recommends t

7 Testing & Final Assembly 36

8 Parts List 37 8.1 Exploded Assembly Diagram (see itemized parts list overleaf) Figure 23.

2

8 Parts List 38 8.2 Itemized Parts List (see exploded diagram Fig. 23. ) AIR LOCKER MODEL No. : RD81 ITEM # QTY DESCRIPTION P

1 Introduction 3 IMPORTANT : BEFORE ATTEMPTING TO DISMANTLE YOUR VEHICLE FOR THIS INSTALLATION, PLEASE READ THIS INSTALLATION GUIDE IN ITS ENTI

1 Introduction 4 1.2 Tool-Kit Recommendations Below is a list of tools and supplies you may need to complete this installation. Requirement

2 Removing the Existing Differential 5 2.1 Vehicle Support  Safely secure the vehicle on a hoist. We recommend supporting the vehicle on a

2 Removing the Existing Differential 6  Remove the wheels and brake assembly according to your vehicle’s service manual.  Rotate the differen

2 Removing the Existing Differential 7 2.5 Checking the Current Backlash Amount IMPORTANT: This step is a precautionary measure recommended