3
Contents
Safety and Environment Guidelines 4
1 Introduction 5
1.1
Service Intervals . . . . . . . . . . . . . . . . . . . . 5
1.2
Basic Principles . . . . . . . . . . . . . . . . . . . . 6
2 Components 9
Serviceable Components of the Air Processing Unit . . . . . . . . . . . . 9
3 Service Instructions 10
3.1
Removal and Replacement of the Desiccant Cartridge (A) . . . . . . . 10
3.2
Removal and Replacement of the Heater Assembly (B) . . . . . . . . 11
3.3
Removal and Replacement of the Silencer Assembly (C). . . . . . . . 12
3.4
Removal of the Air Processing Unit from the Vehicle . . . . . . . . . 13
3.5
Removal and Replacement or Service of the Oil Separator Unit (D) . . . . 14
3.6
Disassembling and Assembling the Purge Valve (E) . . . . . . . . . 17
3.7
Disassembling and Assembling the Tyre Inflator (F) . . . . . . . . . 19
3.8
Replacement of the Double Pressure Sensor (H) . . . . . . . . . . 20
3.9
Removal and Replacement of the Time Switch Piston (I) . . . . . . . 21
3.10
Refitting the Air Processing Unit to the Vehicle . . . . . . . . . . 23
Contents
