MSA5P0631C
6 Cylinder Boxer
Engines Series
Module 104-H6
December 2009
CERTIFIED
TECHNICIAN
Technician
Reference
Booklet
Technical Training
© Subaru of America, Inc. 2009 912 to 919
© Copyright 2009
Subaru of America, Inc.
All rights reserved. This book may not be
reproduced in whole or in part without the
express permission of Subaru of America,
Inc. Specifications in this Guide are based
on the latest product information available at
the time of publication. Some images shown
are for illustration purposes only.
Subaru of America, Inc. reserves the right at
any time to make changes or modifications
to systems, procedures, descriptions, and
illustrations contained in this book without
necessarily updating this document.
Information contained herein is considered
current as of December 2009.
6 Cylinder Boxer Engines Series (104-H6)
December 2009
TABLE OF CONTENTS
3.0 LITER ENGINE ............................................................................................ 6
General Information .................................................................................. 6
3.0 Liter Engine Features ......................................................................... 6
3.0 Specifications ...................................................................................... 6
3.0 LITER ENGINE DISASSEMBLY ................................................................. 9
Unloading Cam Sprockets ...................................................................... 13
Removal of Oil Pump .............................................................................. 15
O-Ring Placement Inner Cover ..................................................... 18
Removal of Cylinder Head ............................................................ 18
Removal of Oil Pan ....................................................................... 19
Piston Pin Access ......................................................................... 20
Splitting Block Halves ................................................................... 20
Lubrication System ....................................................................... 21
Coolant System ............................................................................. 22
Valve Adjustment .......................................................................... 23
Chain Tensioners .......................................................................... 2
3.0 LITER VALVE CLEARANCE ADJUSTMENT- 2001~200 ....................... 25
Adjustment .................................................................................... 25
3.0 LITER ENGINE REASSEMBLY ................................................................ 29
2005 VARIABLE VALVE LIFT SYSTEM ......................................................... 37
VALVE CLEARANCE 3.0 H6 .......................................................................... 39
Inspection ...................................................................................... 39
Valve clearance ...................................................................................... 1
ADJUSTMENT ........................................................................................ 1
INTAKE SIDE ................................................................................ 1
EXHAUST SIDE ..................................................................................... 3
6 CYLINDER AIR BLEED PROCEDURE 05MY AND NEWER ...................... 7
INTRODUCTION 3.6 LITER ENGINE ............................................................. 8
Enhancements / Changes ...................................................................... 9
TIMING CHAINS ............................................................................................. 52
Timing Chain Removal ........................................................................... 5
Right Bank .................................................................................... 5
Left Bank ...................................................................................... 55
TIMING CHAIN INSTALLATION ..................................................................... 56
THE DUAL ACTIVE VALVE TIMING SYSTEM ............................................... 60
OIL PUMP ....................................................................................................... 68
CYLINDER HEAD REMOVAL ......................................................................... 69
6 Cylinder Boxer Engines Series (104-H6)
5
December 2009
CYLINDER BLOCK ......................................................................................... 73
WATER PUMP ................................................................................................ 7
COOLING SYSTEM ........................................................................................ 80
OIL PUMP ....................................................................................................... 81
OIL LEVEL SENSOR ...................................................................................... 82
GENERAL HAND TOOLS AND SUPPLIES .................................................... 85
Reference Materials ................................................................................ 85
Special Tools .......................................................................................... 85
SERVICE BULLETINS .................................................................................... 88
SERVICE BULLETINS .................................................................................... 89
WARRANTY BULLETIN .................................................................................. 90
TECH TIPS ...................................................................................................... 92
TECH TIPS ...................................................................................................... 93
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