Volvo D12 - Default Chapter; Table of Contents

Contents
General .................................................................................................... 3
Specifications ......................................................................................... 5
Intake and Exhaust System ..................................................................... 5
Tools ........................................................................................................ 7
Special Tools ......................................................................................... 7
Special Equipment ................................................................................. 8
Design and Function ............................................................................. 9
Intake and Exhaust System ..................................................................... 9
Preheater ............................................................................................... 9
D12C ................................................................................................. 9
Engines without Preheater ................................................................ 10
Engine Brake ....................................................................................... 11
D12C ............................................................................................... 12
Crankcase Ventilation .......................................................................... 18
D12C ............................................................................................... 18
Exhaust Pressure Governor ................................................................ 19
D12C ............................................................................................... 21
EPG Control Valve ............................................................................ 22
D12A ............................................................................................... 22
D12B ............................................................................................... 22
Air Restriction Indicator ....................................................................... 23
Turbocharger ........................................................................................ 24
D12A ............................................................................................... 24
Exhaust Manifold ................................................................................. 25
Tightening Sequence ........................................................................ 26
Troubleshooting ................................................................................... 27
Air Restriction Indicator, Checking ...................................................... 27
Service Procedures ............................................................................. 29
Air Filter Element, Replacement ......................................................... 29
Intake Manifold Gasket(s), Replacement ............................................ 30
Removal .......................................................................................... 31
Installation ....................................................................................... 31
Turbocharger, Replacement ................................................................ 32
Removal .......................................................................................... 32
Installation ....................................................................................... 33
Exhaust Manifold Gasket(s), Replacement ......................................... 34
(Turbocharger Removed) ................................................................... 34
Exhaust Pressure Governor, Replacement ......................................... 35
Exhaust Pressure Governor, Overhaul ............................................... 36
(Unit Removed) ................................................................................. 36
Disassembly .................................................................................... 36
Assembly ......................................................................................... 37
Charge Air Cooler Leak Test, Checking .............................................. 39
System Check ...................................................................................... 41
Boost Pressure, Checking ................................................................... 41
Exhaust Backpressure, Checking ........................................................ 42
Pressure Testing Outlet Location ...................................................... 42
Backpressure Measuring Techniques ............................................... 42
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Operation Numbers
1