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Subaru Legacy 2004 Quick Reference Index
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Subaru Legacy 2004 Quick Reference Index

Subaru Legacy 2004 Quick Reference Index

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2004 LEGACY SERVICE MANUAL
ENGINE SECTION 1
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.
FUJI HEAVY INDUSTRIES LTD.
QUICK REFERENCE INDEX
FUEL INJECTION (FUEL SYSTEMS)
EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICES)
INTAKE (INDUCTION)
MECHANICAL
EXHAUST
COOLING
LUBRICATION
SPEED CONTROL SYSTEMS
IGNITION
STARTING/CHARGING SYSTEMS
ENGINE (DIAGNOSTICS)
FUEL INJECTION (FUEL SYSTEMS)
EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICES)
INTAKE (INDUCTION)
MECHANICAL
EXHAUST
COOLING
FU(H4SO 2.0)
EC(H4SO 2.0)
IN(H4SO 2.0)
ME(H4SO 2.0)
EX(H4SO 2.0)
CO(H4SO 2.0)
LU(H4SO 2.0)
SP(H4SO 2.0)
IG(H4SO 2.0)
SC(H4SO 2.0)
EN(H4SO 2.0)
(diag)
FU(H4SO 2.5)
EC(H4SO 2.5)
IN(H4SO 2.5)
ME(H4SO 2.5)
EX(H4SO 2.5)
CO(H4SO 2.5)
G2320GE2

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Summary of Contents for Subaru Legacy 2004

  • Page 1 (AUX. EMISSION CONTROL DEVICES) INTAKE (INDUCTION) IN(H4SO 2.0) MECHANICAL ME(H4SO 2.0) This service manual has been prepared to provide SUBARU service personnel EXHAUST EX(H4SO 2.0) with the necessary information and data for the correct maintenance and repair of SUBARU vehicles.
  • Page 2 2003 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX ENGINE SECTION 1 LUBRICATION LU(H4SO 2.5) SPEED CONTROL SYSTEMS SP(H4SO 2.5) IGNITION IG(H4SO 2.5) STARTING/CHARGING SYSTEMS SC(H4SO 2.5) EN(H4SO 2.5) ENGINE (DIAGNOSTICS) (diag) G2320GE2...

  • Page 3: Table Of Contents

    EXHAUST EX(H4SO 2.0) Page General Description ..................2 Front Exhaust Pipe..................7 Center Exhaust Pipe .................10 Rear Exhaust Pipe ..................11 Muffler .......................13...

  • Page 4: General Description

    General Description EXHAUST 1. General Description A: COMPONENT • 2.0 L model (19) (22) (20) (21) (19) (16) (19) (15) (18) (17) (23) (24) (12) (11) (14) (10) (13) EX-02020 EX(H4SO 2.0)-2...
  • Page 5 General Description EXHAUST Front catalytic converter upper (11) Center exhaust pipe lower cover (23) Rear exhaust pipe upper cover cover (12) Gasket (24) Rear exhaust pipe lower cover Front catalytic converter (13) Front catalytic converter lower ⋅ cover Center exhaust pipe Tightening torque: N m (kgf-m, ft-lb) Center exhaust pipe upper cover...
  • Page 6 General Description EXHAUST • 2.5 L model (22) (19) (19) (23) (21) (19) (21) (20) (19) (16) (19) (20) (15) (18) (17) (24) (25) (12) (11) (14) (10) (13) EX-02012 EX(H4SO 2.0)-4...
  • Page 7 General Description EXHAUST Front catalytic converter upper (11) Center exhaust pipe lower cover (23) Muffler (LH) cover (12) Gasket (24) Rear exhaust pipe upper cover Front catalytic converter (13) Front catalytic converter lower (25) Rear exhaust pipe lower cover cover Center exhaust pipe ⋅...
  • Page 8 General Description EXHAUST B: CAUTION • Wear work clothing, including a cap, protective goggles and protective shoes during operation. • Remove contamination including dirt and corro- sion before removal, installation or disassembly. • Keep the disassembled parts in order and pro- tect them from dust and dirt.

  • Page 9: Front Exhaust Pipe

    Front Exhaust Pipe EXHAUST 2. Front Exhaust Pipe 7) Remove the nuts which hold front exhaust pipe onto cylinder heads. A: REMOVAL CAUTION: 1) Disconnect the ground cable from battery. Be careful not to pull down the front and center exhaust pipe assembly.
  • Page 10 Front Exhaust Pipe EXHAUST 11) Remove the front oxygen (A/F) sensor and rear 5) Install the nuts to cylinder head which hold front oxygen sensor. <Ref. to FU(H4SO 2.0)-32, RE- exhaust pipe. MOVAL, Front Oxygen (A/F) Sensor.> <Ref. to Tightening torque: FU(H4SO 2.0)-33, REMOVAL, Rear Oxygen Sen- ⋅...
  • Page 11 Front Exhaust Pipe EXHAUST 9) Connect the rear oxygen sensor connector. FU-01116 10) Lower the vehicle. 11) Connect the front oxygen (A/F) sensor connec- tor. ME-00859 12) Connect the battery ground cable to battery. IN-00203 C: INSPECTION 1) Make sure there are no exhaust leaks from con- nections and welds.

  • Page 12: Center Exhaust Pipe

    Center Exhaust Pipe EXHAUST 3. Center Exhaust Pipe A: REMOVAL After removing the center and front exhaust pipes as one unit, separate them. Refer to “Front Exhaust Pipe” for removal procedure. <Ref. to EX(H4SO 2.0)-7, REMOVAL, Front Exhaust Pipe.> B: INSTALLATION Install the center exhaust pipe and front exhaust pipe as one unit.

  • Page 13: Rear Exhaust Pipe

    Rear Exhaust Pipe EXHAUST 4. Rear Exhaust Pipe 4) Remove the rear exhaust pipe bracket from cushion rubber. A: REMOVAL 1) Separate the rear exhaust pipe from center ex- haust pipe. EX-00219 B: INSTALLATION 1) Apply a coat of spray type lubricant to mating EX-00214 area of cushion rubber.
  • Page 14 Rear Exhaust Pipe EXHAUST • RH side (2.5 L model) EX-00218 4) Install the rear exhaust pipe to center exhaust pipe. Tightening torque: ⋅ 18 N m (1.8 kgf-m, 13.0 ft-lb) EX-00214 C: INSPECTION 1) Make sure there are no exhaust leaks from con- nections and welds.

  • Page 15: Muffler

    Muffler EXHAUST 5. Muffler B: INSTALLATION Install in the reverse order of removal. A: REMOVAL NOTE: 1) Separate the muffler from rear exhaust pipe. Use a new gasket and self-locking nut. • LH side Tightening torque: ⋅ 48 N m (4.9 kgf-m, 35.4 ft-lb) •...
  • Page 16 Muffler EXHAUST EX(H4SO 2.0)-14...