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SECTION 04 : EXHAUST AND AFTERTREATMENT

DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 04 revised March 2021

CONTENTS

SECTION CHANGE LOG ....................................................................................................................................... 2

1. TORQUE TABLES ......................................................................................................................................... 3

1.1. EXHAUST SYSTEM .......................................................................................................................................... 3

1.2. MISCELLANEOUS TORQUES ........................................................................................................................... 6

2. EXHAUST AFTERTREATMENT SYSTEM (EATS) OVERVIEW ............................................................................. 7

2.1. MAINTENANCE .............................................................................................................................................. 8

2.2. FLEXIBLE COUPLING INSTALLATION ............................................................................................................... 8

3. DIESEL PARTICULATE FILTER (DPF) .............................................................................................................. 9

3.1. DIESEL PARTICULATE FILTER ASSEMBLY REMOVAL ...................................................................................... 11

4. SELECTIVE CATALYTIC REDUCTION CONVERTER .......................................................................................... 13

4.1. REMOVAL ..................................................................................................................................................... 13

5. ASSEMBLING CATALYTIC CONVERTER ............................................................................................................. 15

6. DIFFUSER ASSEMBLY ................................................................................................................................. 17

6.1. DIFFUSER ADJUSTMENT ............................................................................................................................... 17

6.2. MAINTENANCE ............................................................................................................................................ 17

7. DIESEL EXHAUST FLUID (DEF) TANK AND INJECTION SYSTEM ...................................................................... 18

7.1. DIESEL EXHAUST FLUID ................................................................................................................................ 18

7.2. FILLER NECK STRAINER ................................................................................................................................. 20

7.3. DEF TANK CLEANING .................................................................................................................................... 20

7.4. PUMP ASSEMBLY FILTER ELEMENT REPLACEMENT ..................................................................................... 21

8. AFTERTREATMENT HYDROCARBON DOSER ................................................................................................ 22

8.1. REPLACEMENT ............................................................................................................................................. 22