ARB RD40 User Manual
Page 3

Table of Contents:
1
1 Introduction
3
1.1 Pre-Installation Preparation
1.2
1.3 Tool-Kit Recommendations
1.4
2 Removing the Existing Differential
5
2.1
Vehicle Support
5
2.2
Differential Fluid Drain
5
2.3
Removing the Axles
5
2.4
Marking the Bearing Caps
6
2.5
Checking the Current Backlash Amount
7
2.6
Removing the Differential Carrier
8
3
Installing the Air Locker
9
3.1
Installing the Carrier Bearings
9
3.2
Mounting the Ring Gear
10
3.3
Drilling & Tapping the Bulkhead Port
11
3.4
Assembling the Differential Carrier
12
3.5
Approximating the Backlash for Tube Position
12
3.6
Marking the Bearing Cap for Tube Clearance
13
3.7
Modifying the Bearing Cap
15
3.8
Final Air Locker Assembly
17
3.9
Checking the Backlash
17
3.10
Profiling the Seal Housing Tube
19
3.11
Setting up the Bulkhead Fitting
19
3.12
Reinstalling the Axles
21
4
Installing the Air System
22
4.1
Mounting the Solenoid
22
4.2
Running & Securing the Air Line
24
4.3
Connection to the Bulkhead Fitting
25
5
Mounting & Connecting the Electrical System
27
5.1
Mounting the Actuator Switch(es)
27
5.2
Wiring the Actuator System
28
6
Testing & Final Assembly
32
6.1
Leak Testing
32
6.2
Testing the Air Locker Actuation
32
6.3
Re-Sealing & Filling the Differential
33
6.4
Post-Installation Check List
34
7
Parts List
35
7.1
Exploded Assembly Diagram
35
7.2
Itemized Parts List
36