2002 MAZDA 6 radiator

B1–4
OUTLINE, ENGINE
SUPPLEMENTAL SERVICE INFORMATIONA6E220202000205•The following changes and/or additions have been made since publication of the Mazda6 Workshop Manual
(1730-1*-02C).
Engine
•Removal/Installation procedure for 4WD has been adopted.
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ENGINE REMOVAL/INSTALLATION (4WD)A6E222401001201
Warning
•Fuel vapor is hazardous. It can very easily ignite, causing serious injury and damage. Always keep
sparks and flames away from fuel.
•Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and
damage. Fuel can also irritate skin and eyes. To prevent this, always complete the “Fuel Line
Safety Procedure”.
1. Remove the battery.
2. Remove the battery tray.
3. Remove the radiator.
4. Drain the transaxle oil.
5. Remove the P/S oil pump with the oil hose still connected. Position the P/S oil pump so that it is out of the way.
Use wire or rope to secure.
6. Remove the A/C compressor with the pipes still connected. Position the A/C compressor so that it is out of the
way. Use wire or rope to secure.
7. Remove the propeller shaft from the transfer.
8. Remove the joint shaft. (See M–31 JOINT SHAFT (4WD) DISASSEMBLY/ASSEMBLY.)
9. Remove the front drive shaft (LH) from the transaxle. (See M–39 FRONT DRIVE SHAFT (4WD)
DISASSEMBLY/ASSEMBLY.)
10. Remove the air cleaner, intake air duct, accelerator cable and bracket, and vacuum hose.
11. Remove the ATF hose and selector cable.
12. Remove the vacuum hose and heater hose.
13. Disconnect the fuel hose. (See F1–27 Plastic Fuel Hose Removal Note.) (See F1–28 Plastic Fuel Hose
Installation Note.)
14. Disconnect the wiring harness from the engine side.
15. Remove the three way catalyst (TWC). (See F1–30 EXHAUST SYSTEM REMOVAL/INSTALLATION.)
16. Remove in the order indicated in the table.
17. Install in the reverse order of removal.
18. Start the engine and:
•Inspect for the engine oil, engine coolant, transaxle oil and fuel leakage.
•Verify the ignition timing, idle speed and idle mixture. (See F1–22 IDLE SPEED INSPECTION (4WD).)
19. Perform a road test.
OUTLINE
ENGINE

ENGINE
B2–27
B2
ENGINE REMOVAL/INSTALLATIONA6E232401001201
Warning
•Fuel vapor is hazardous. It can very easily ignite, causing serious injury and damage. Always keep
sparks and flames away from fuel.
•Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injures or death and
damage. Fuel can also irritate skin and eyes. To prevent this, always complete the “Fuel Line
Safety Procedure”. (See F2–45 Fuel Line Safety Procedures.)
1. Disconnect the negative battery cable.
2. Drain the engine coolant, engine oil, and transaxle oil.
3. Remove the radiator.
4. Remove the engine cover. (See B2–9 TIMING BELT REMOVAL/INSTALLATION.)
5. Remove the air cleaner and air hose. (See F2–36 INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
6. Disconnect the fuel hose. (See F2–45 BEFORE REPAIR PROCEDURE.)
7. Remove the front pipe. (See F2–57 EXHAUST SYSTEM REMOVAL/INSTALLATION.)
8. Remove the battery and tray. (See G–5 BATTERY REMOVAL/INSTALLATION.)
9. Remove the shift cable, select cable and clutch release cylinder related to the transaxle. (See J2–7 MANUAL
TRANSAXLE REMOVAL/INSTALLATION.)
10. Remove the clutch release cylinder.
11. Remove the vacuum hose and the heater hose.
12. Disconnect the P/S oil pump pressure pipe and P/S oil pump relief hose from the P/S oil pump side. (See N–16
POWER STEERING OIL PUMP (MZR-CD (RF Turbo)) REMOVAL/INSTALLATION.)
Note
•The P/S oil pump will not be removed from the engine.
13. Remove the A/C compressor with the pipe still connected. Position the A/C compressor so that it is out of the
way. Use wire or rope to secure it. (See U–11 A/C COMPRESSOR REMOVAL/INSTALLATION.)
14. Remove the joint shaft.
15. Remove the front drive shaft (LH) from the transaxle.
16. Remove in the order indicated in the table.
17. Install in the reverse order of removal.
18. Fill the engine coolant, engine oil, and transaxle oil.
19. Bleed the air from the fuel line. (See F2–45 AFTER REPAIR PROCEDURE.)
20. Start the engine and:
•Inspect the pulleys and the drive belt for runout and contact.
•Inspect the engine oil, engine coolant transaxle oil, P/S fluid, and fuel for leakage.
•Inspect the idle speed. (See F2–34 IDLE SPEED INSPECTION.)
21. Perform a road test.
22. Reinspect the engine oil, engine coolant, transaxle oil, and P/S fluid levels.
ENGINE

D–10
OIL PAN
OIL PAN REMOVAL/INSTALLATIONA6E332010040201MZR-CD (RF Turbo)
Warning
•Hot engines and engines oil can cause severe burns. Turn off the engine and wait until it and the
engine oil have cooled.
1. Disconnect the negative battery cable.
2. Remove the under cover.
3. Drain the engine oil. (See D–8 ENGINE OIL REPLACEMENT.)
4. Remove the lower radiator hose assembly under the oil pan with the cooling hose still connected. Position the
lower radiator hose assembly so that it is out of the way.
5. Remove in the order indicated in the table.
6. Install in the reverse order of removal.
7. Refill the engine oil with the specified type and amount. (See D–8 ENGINE OIL REPLACEMENT.)
8. Start the engine and inspect for oil leakage.
•If the oil leaks, specify the faulty part and repair or replace it.
9. Inspect the oil level. (See D–8 ENGINE OIL INSPECTION.)
.
Oil Pan Removal Note
Caution
•Pry tools can easily scratch the oil pan mounting surfaces. Prying off the oil pan can easily bend
the oil pan flange.
Refer to the following instructions before removing the oil pan.
1. Remove the oil pan mounting bolts.
2. Remove the sealant from the bolt threads.
OIL PAN
7.9—10.7
{80—110, 69.5—95.4}
N·m {kgf·cm, in·lbf}
1
SEALANTSEALANT
A6E3320W100
1Oil pan
(See D–10 Oil Pan Removal Note)
(See D–11 Oil Pan Installation Note)

E–1
E
ECOOLING SYSTEM
OUTLINE................................................................ E-2
OUTLINE OF CONSTRUCTION.......................... E-2
FEATURES .......................................................... E-2
SPECIFICATIONS ............................................... E-3
COOLING SYSTEM................................................ E-4
STRUCTURAL VIEW ........................................... E-4
COOLING FLOW DIAGRAM ............................... E-5
COOLING FAN .................................................... E-5
OUTLINE................................................................ E-6
SUPPLEMENTAL SERVICE INFORMATION ..... E-6
LOCATION INDEX ............................................... E-6
RADIATOR CAP..................................................... E-7
RADIATOR CAP INSPECTION ........................... E-7
ENGINE COOLANT................................................ E-8
ENGINE COOLANT LEAKAGE INSPECTION .... E-8
THERMOSTAT....................................................... E-9
THERMOSTAT REMOVAL/INSTALLATION ....... E-9
THERMOSTAT INSPECTION ........................... E-10
WATER PUMP...................................................... E-11
WATER PUMP REMOVAL/INSTALLATION...... E-11
FAN MOTOR........................................................ E-12
COOLING FAN MOTOR
REMOVAL/INSTALLATION ............................ E-12
COOLING FAN MOTOR INSPECTION ............. E-13 FEATURES
SERVICE

OUTLINE
E–3
E
SPECIFICATIONSA6E360202000209Gasoline engine
Bold frames: New specifications
Diesel engine
Bold frames: New specifications
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ItemSpecification
New
Mazda6
(GG, GY)Current
Mazda6
(GG)New
Mazda6
(GG, GY)Current
Mazda6
(GG)New
Mazda6
(GG, GY)Current
Mazda6
(GG)
L8 LF L3
Cooling system Water-cooled
Coolant capacity
(approximate quantity)(L {US qt, lmp qt}) 7.5 {7.9, 6.6}
Water pump TypeCentrifugal,
V-ribbed belt-driven
ThermostatTypeWax,
Bottom-bypass
Opening temperature (°C {°F}) 80—84 {176—183}
Full-open temperature (°C {°F}) 97 {206}
Full-open lift (mm {in}) More than 8.0 {0.31}
RadiatorType Corrugated fin
Cap valve opening pressure
113—142
{1.15—1.44, 16.4—20.4}
(kPa {kgf/cm
2, psi})
Cooling fanType Electric
BladeOuter
diameter(mm {in}) 300 {11.8} 320 {12.6}
Number of
blade(sheet)Cooling fan No.1: 5
Cooling fan No.2: 7Cooling fan No.1: 7
Cooling fan No.2: 5
ItemSpecification
New Mazda6
(GG, GY)Current Mazda 323
(BJ)
MZR-CD (RF Turbo) RF Turbo
Cooling system Water-cooled
Coolant capacity
(approximate quantity)(L {US qt, lmp qt}) 9.0 {9.5, 7.9}
Water pump TypeCentrifugal,
Timing-belt driven
ThermostatType Wax, Bottom-bypass
Opening temperature (°C {°F}) 80—84 {176—183}
Full-open temperature (°C {°F}) 95 {203}
Full-open lift (mm {in}) More than 8.5 {0.33}
RadiatorType Corrugated fin
Cap valve opening pressure
94—122
{0.96—1.24, 13.7—17.6}
(kPa {kgf/cm
2, psi})
Cooling fanType Electric
BladeOuter
diameter(mm {in}) 320 {12.6} 300 {11.9}
Number of
blade(sheet)Cooling fan No.1: 7
Cooling fan No.2: 54

E–4
COOLING SYSTEM
STRUCTURAL VIEWA6E363002000201MZR-CD (RF Turbo)
.
End Of Sie
COOLING SYSTEM
8
75
4
3
1
2
6
10
11
11
9
1312
A6E3602W201
1 To water heater system
2 Radiator
3 Coolant reservoir tank
4Thermostat
5 Water pump
6 Cylinder head
7 Cylinder block8 Engine oil cooler
9EGR water cooler
10 To cylinder head
11 To cylinder block
12 Turbocharger
13 Water outlet

COOLING SYSTEM
E–5
E
COOLING FLOW DIAGRAMA6E363002000202MZR-CD (RF Turbo)
.
End Of SieCOOLING FANA6E363002000204 MZR-CD (RF Turbo)
Structure
•Electric cooling fans No.1 and No.2, operated according to a cooling fan control signal from the PCM, have
been adopted. Due to this, engine noise is reduced and rapid warm-up is possible.
•Cooling fans No.1 and No.2 are attached to the radiator cowling.
•The cooling fan motor output has been changed.
Cooling fan, Fan motor specification
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9
8
7
5
4
3
1
2
10
13
11
12
6
A6E3600W300
1Radiator
2 Coolant reservoir tank
3 Water outlet
4EGR water cooler
5 Engine oil cooler
6 Cylinder head
7 Cylinder block8 Turbocharger
9 Water pump
10 Thermostat case
11 Thermostat cover
12 Water heater system
13 Heater core
ITEM Specification
Cooling fan No.1Fan Number of blades (sheet) 7
Motor Motor output (W) 70
Cooling fan No.2Fan Number of blades (sheet) 5
Motor Motor output (W) 80

E–6
OUTLINE
SUPPLEMENTAL SERVICE INFORMATIONA6E360202000208•The following changes and/or additions have been made since publication of the Mazda6 Workshop Manual
(1730-1*-02C).
Radiator cap
•Inspection procedure has been added. (MZR-CD (RF Turbo) engine model)
Thermostat
•Removal/Installation procedure has been added. (MZR-CD (RF Turbo) engine model)
•Inspection procedure has been added. (MZR-CD (RF Turbo) engine model)
Water pump
•Removal/Installation procedure has been added. (MZR-CD (RF Turbo) engine model)
Fan motor
•Removal/Installation procedure has been added. (MZR-CD (RF Turbo) engine model)
•Inspection procedure has been added. (MZR-CD (RF Turbo) engine model)
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LOCATION INDEXA6E360202000210MZR-CD (RF Turbo)
.
End Of Sie
OUTLINE
4
3
1
2
A6E3602W202
1 Radiator cap
(See E–7 RADIATOR CAP INSPECTION)
2Thermostat
(See E–9 THERMOSTAT REMOVAL/
INSTALLATION)
(See E–10 THERMOSTAT INSPECTION)3 Water pump
(See E–11 WATER PUMP REMOVAL/
INSTALLATION)
4 Cooling fan motor
(See E–12 COOLING FAN MOTOR REMOVAL/
INSTALLATION)
(See E–13 COOLING FAN MOTOR INSPECTION)