ARB RD75 User Manual
Page 3

Table of Contents:
1
1 Introduction
3
1.1 Pre-Installation Preparation
3
1.2 Tool-Kit Recommendations
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 Mounting the Ring Gear
9
3.2 Installing the Carrier Bearings
10
3.3 Drilling and Tapping the Bulkhead Port
11
3.4 Final Air Locker Assembly
12
3.5 Checking the Backlash
13
3.6 Installing the Seal Housing
14
3.7 Setting up the Bulkhead Fitting
15
3.8 Profiling the Seal Housing Tube
18
3.9 Bench Testing the Air Locker
20
3.10 Reinstalling the Differential & 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
26
5.1 Mounting the Actuator Switch(es)
26
5.2 Wiring the Actuator System
27
6 Testing & Final Assembly
30
6.1 Leak Testing
30
6.2 Testing the Air Locker Actuation
30
6.3 Filling the Differential
31
6.4 Post-Installation Check List
32
7 Parts List
33
7.1 Exploded Assembly Diagram
33
7.2 Itemized Parts List
34