Arb RD158 Manuel d'utilisateur

INSTALLATION GUIDE RD21 DANA 60, 30 SPLINE, 4.56 & UP Part No. 210221Revision Date 07/09/2004Copyright © 2

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

3 Bench Measurement 9 3.1 Measurement for Pre-Load Shimming When fitting an ARB Air Locker, a replacement bearing and variable shim pack (su

3 Bench Measurement 10 Figure 4. Figure 5.

3 Bench Measurement 11 3.2 Calculation & Selection of Shims The thickness of the shim pack required for the Air Locker (shown as ‘D’ in

4 Installing the Air Locker 12 4.1 Installing the Carrier Bearings c With the Air Locker well supported in an arbor press, apply a thin film

4 Installing the Air Locker 13 4.2 Mounting the Ring Gear c Apply a thin film of high-pressure grease to the ring gear shoulder of the Air

4 Installing the Air Locker 14 4.3 Drilling and Tapping the Bulkhead Port A port must be drilled and tapped through the differential housi

4 Installing the Air Locker 15 4.4 Assembling the Differential Carrier c Relieve all tension on the housing spreader. c Place the bearing c

4 Installing the Air Locker 16 c Hold the bearing cup in place on the ring gear side. c Holding the master shim and tapered roller bearing cup

4 Installing the Air Locker 17 c Set a depth indicator on one of the ring gear teeth as in figure 9. c While supporting the pinion gear by hol

No liability is assumed for damages resulting in the use of the information contained herein. ARB Air Locker Locking Differentials and Air Lo

4 Installing the Air Locker 18 4.6 Marking the Bearing Cap for Tube Clearance With the Air Locker in place and less than 0.5mm of backlash,

4 Installing the Air Locker 19 c Measure to the bearing cap from exactly the same position on the differential housing that you took the previo

4 Installing the Air Locker 20 4.7 Modifying the Bearing Cap 4.7.1 Drilling the Bearing Cap c Hold the bearing cap steady for drilling i

4 Installing the Air Locker 21 Figure 13. 4.7.2 Notching the Bearing Cap c Use a soft jawed vise clamp to hold the bearing c

4 Installing the Air Locker 22 4.8 Air Locker Final Assembly c Remove the seal housing, shim pack, and master shim, and clean all parts of

4 Installing the Air Locker 23 c Rotate the differential center 90° and measure again for accuracy. Figure 15. c Refer to your

4 Installing the Air Locker 24 4.10 Profiling the Seal Housing Tube c Without using sharp, jagged tools such as pliers (usually your hands

4 Installing the Air Locker 25 c Wipe the area clean of any excess thread sealant (inside and outside of the housing). c From the outside of th

4 Installing the Air Locker 26 NOTE : Make sure the seal housing tube is all of the way into the center compression nut while you are tight

5 Installing the Air System 27 5.1 Mounting the Solenoid 5.1.1 Connection to an ARB Air Compressor (Fig.18.) c Remove one of the 1/8”

Table of Contents: 1 1 Introduction 3 1.1 Pre-Installation Preparation 3 1.2 Tool-Kit Recommendations 4 2 Removing the Existing Diff

5 Installing the Air System 28 5.1.2 Connection to an Alternate Air Source For ease of installation, quality of air supply, and a high lev

5 Installing the Air System 29 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 30 NOTE : To remove the air line from the push-in fitting; while holding the flange of the fitting out, push th

5 Installing the Air System 31 HINT : If the support tube is too difficult to insert, place the end of the air line into a cup of boiled w

6 Mounting & Connecting the Electrical System 32 6.1 Mounting the Actuator Switch(es) Air Locker actuator switch(es) can be easily pan

6 Mounting & Connecting the Electrical System 33 Figure 20. 6.2 Wiring the Actuator System 6.2.1 Connection

6 Mounting & Connecting the Electrical System 34 UP Figure 21. Figure 22. SWITCHTERMINALIDENTIFICATION ARB

6 Mounting & Connecting the Electrical System 35 6.2.2 Connection to an Alternate Air Source When connecting the actuation switch to a

6 Mounting & Connecting the Electrical System 36 6.2.2.2 Dual Air Locker System c If two Air Lockers are to be installed in the syste

7 Testing & Final Assembly 37 7.1 Leak Testing c With the vehicle parked and the engine off, turn the compressor on and wait until the

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7 Testing & Final Assembly 38 c Turn the ignition to the ‘ON’ position (leaving the motor off). The large illuminating symbol on the Air L

7 Testing & Final Assembly 39 7.4 Post-Installation Check List Now that the Air Locker installation has been completed, ARB recommends

7 Testing & Final Assembly 40

8 Parts List 41 8.1 Exploded Assembly Diagram (See itemized parts list overleaf) Figure 25.

8 Parts List 42 8.2 Itemized Parts List (See exploded diagram figure 25.) AIR LOCKER MODEL No. : RD21 ITEM # QTY DESCRIPTION

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

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

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

2 Removing the Existing Differential 6 2.4 Marking the Bearing Caps c Using a pointed center punch, gently mark the bearing caps in a wa

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