LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System >> Cylinder Head Gasket Replacement >> Notes

Cylinder Head Gasket Replacement: Notes

WARNING:
  • A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing.
  • Fuel vapor is hazardous. It can very easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
  • Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the "Fuel Line Safety Procedure" to prevent the fuel from spraying.
    • Fuel may cause irritation if it comes in contact with skin and eyes.
    • If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
CAUTION:
  • If the camshaft is rotated with the timing chain removed and the piston at the top dead center position, the valve may contact the piston and the engine could be damaged. When rotating the camshaft with the timing chain removed, rotate it after lowering the piston from the top dead center position.
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the front under cover No. 1 and No. 2. (See FRONT UNDER COVER No. 1 REMOVAL/INSTALLATION .) (See FRONT UNDER COVER No. 2 REMOVAL/INSTALLATION .)
  3. Remove the front splash shield. (See FRONT SPLASH SHIELD REMOVAL/INSTALLATION .)
  4. Drain the engine oil. (See ENGINE OIL REPLACEMENT .)
  5. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  6. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
  7. Remove the air cleaner, air hose and fresh air duct as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
  8. Remove the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION .)
  9. Remove the air inlet pipe. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
  10. Remove the EGR cooler and EGR valve component. (See EGR COOLER REMOVAL/INSTALLATION .) (See EGR VALVE REMOVAL/INSTALLATION .)
  11. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
  12. Remove the WU-TWC. (See EXHAUST SYSTEM REMOVAL/INSTALLATION .)
  13. Remove the dynamic pressure turbo. (See DYNAMIC PRESSURE TURBO REMOVAL/INSTALLATION .)
  14. Remove the exhaust manifold. (See EXHAUST SYSTEM REMOVAL/INSTALLATION .)
  15. Remove the ignition coil/ion sensors. (See IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION .)
  16. Remove the vacuum pump. (See VACUUM PUMP REMOVAL/INSTALLATION .)
  17. Remove the high pressure fuel pump and rear housing. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION .)
  18. Remove the drive belt. (See DRIVE BELT REMOVAL/INSTALLATION .)
  19. Remove the oil pan. (See OIL PAN REMOVAL/INSTALLATION .)
  20. Remove the timing chain and chain guide. (See TIMING CHAIN REMOVAL/INSTALLATION .)
  21. Remove the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION .)
  22. Disconnect the radiator hoses shown in the figure.
    G13698000Courtesy of MAZDA MOTORS CORP.
  23. Remove in the order indicated in the table.
  24. Install in the reverse order of removal.
  25. Refill with the specified type and amount of the engine oil. (See ENGINE OIL REPLACEMENT .)
  26. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  27. Start the engine, and inspect and adjust the following:
    • Leakage of engine oil, engine coolant.
    • Runout and contact of pulley and belt.
    • Ignition timing, idle speed and idle mixture. (See ENGINE TUNE-UP .)
    • Compression pressure (See COMPRESSION INSPECTION .)
    Fig 1: Cylinder Head Gasket Components With Torque Specification
    G13698001Courtesy of MAZDA MOTORS CORP.
    PART DESCRIPTION

    1 Water pipe component (See WATER PIPE COMPONENT REMOVAL NOTE .)
    (See WATER PIPE COMPONENT INSTALLATION NOTE .)
    2 Oil cooler pipe component
    (See OIL COOLER PIPE COMPONENT REMOVAL NOTE .)
    (See OIL COOLER PIPE INSTALLATION NOTE .)
    3 Flange (See FLANGE AND WATER INLET PIPE REMOVAL NOTE .)
    (See FLANGE AND WATER INLET PIPE INSTALLATION NOTE .)
    4 Water inlet pipe
    (See FLANGE AND WATER INLET PIPE REMOVAL NOTE .)
    (See FLANGE AND WATER INLET PIPE INSTALLATION NOTE .)
    5 Camshaft
    (See CAMSHAFT REMOVAL NOTE .)
    (See CAMSHAFT INSTALLATION NOTE .)
    6 OCV oil filter
    7 Rocker arm
    (See HYDRAULIC LASH ADJUSTER (HLA) REMOVAL/INSTALLATION .)
    8 Cylinder head
    (See CYLINDER HEAD REMOVAL NOTE .)
    (See CYLINDER HEAD INSTALLATION NOTE .)
    9 Cylinder head gasket
scientia non olet · About LEMON Manuals