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2004 Subaru Outback CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Subaru REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Technical Service Bulletins
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- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

A/C & HEATER SERVICE PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
Air Bag System Precautions -> Subaru -> Disarming
Vehicle: 2004 Subaru Outback 2.5 H4 GAS
- Turn ignition Off.
- Disconnect battery ground cable, then battery positive cable.
- On Impreza models, wait 20 se...
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BRAKE SERVICE PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
Subaru -> Power Brake Units -> Power Brake Unit Service -> Brake Booster, Replace -> Overhaul
Vehicle: 2004 Subaru Outback 2.5 H4 GAS
Brake Booster, Replace
- Disconnect brake fluid level indicator connector, if equipped.
- Remove master cylinder assembly.
- Disconnect vacuum hose from brake booster.
- Working from inside the passenger compartment, remove snap pin and operating rod cle...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
Subaru -> Fuel Filter Scheduled Maintenance -> 1994-04 Except 2004 Impreza WRX STi -> Normal Service -> Severe Service
Vehicle: 2004 Subaru Outback 2.5 H4 GAS
Normal Service
Replace ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
CV AXLE SHAFT, Replace -> Front -> Rear
Vehicle: 2004 Subaru Outback 2.5 H4 GAS
Front
- Disconnect battery ground cable.
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and front wheels.
- Unstake hub nut using suitable tool.
- Remove driveshaft locknut from front hub while depressing brake pedal. Remove wheel before loosening axle nut.
- Remove stabilizer link from front arm.
- Disconnect transverse link from housing.
- Remove spring pin which secures transmission spindle and install new spring upon installation.
- Remove front driveshaft assembly. If driveshaft is hard to remove use suitable puller to aid in removal.
- Remo...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
Starter, Replace
Vehicle: 2004 Subaru Outback 3.0 H6 GAS
- Disconnect battery ground cable.
- Disconnect solenoid wiring at starter.
- Remo...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
Cabin Air Filter Service -> Subaru -> 1998-2004 Legacy, Outback & 2003-04 Baja
Vehicle: 2004 Subaru Outback 2.5 H4 GAS
The cabin air filter should be replaced every 12 months or 9,300 ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
Subaru -> Malfunction Indicator Lamp (MIL) ->
Vehicle: 2004 Subaru Outback 3.0 H6 GAS
The MIL will be illuminated when the ignition switch is placed in the On position, and should go out when the engine is started. If the MIL remains lit after engine start-up, the self-diagnostic system has detected a fault an...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
Radiator, Replace
Vehicle: 2004 Subaru Outback 3.0 H6 GAS
- Raise and support vehicle, then remove under cover.
- Drain coolant into suitable container.
- Disconnect cooling fan electrical connectors.
- Disconnect radiator outlet hose, then the ATF cooler lines from radiator.
- Lower vehicle, then remove air intake...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Subaru Outback AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 Subaru Outback 2.5 H4 GAS
- Remove drive belt cover. Wipe off any oil or water on belt and pulley.
- Loosen lockbolt on slider bolt.
- Loosen slider bolt.
- ...
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COMPONENT LOCATION DIAGRAMS FOR 2004 Subaru Outback AUTOMOBILES
Component location diagrams for most 2004 Subaru Outback cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2004 Subaru Outback AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Subaru Outback cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Subaru Outback AUTOMOBILES
OEM TSB listings for most 2004 Subaru Outback cars and light trucks sold in the U.S. from 1985+.
Document: Service Manual Corrections Vehicle: 2004 Subaru Outback 2.5 H4 GAS Auto Systems: |
Document: EVAPORATIVE EMISSION SYSTEM DIAGNOSTIC
INFORMATION Vehicle: 2004 Subaru Outback 2.5 H4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Subaru Outback AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 Subaru Outback cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2004 Subaru Outback cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2004 Subaru Outback cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2004 Subaru Outback cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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