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Home › Mazda › 2001 › B2300 SX, Standard › Repair and Diagnosis (Single Page) › Engine Mechanical › Engine Mechanical › Engine Disassembly And Assembly › Disassembly Note

Disassembly Note

  1. Remove the drive belt.
    Fig 1: Removing Drive Belt
    G01168098Courtesy of MAZDA MOTORS CORP.
  2. Remove the engine oil level indicator assembly.
    1. Remove the engine oil level indicator.
    2. Remove the bolts.
    3. Remove the engine oil level indicator tube.
      4. Fig 2: Removing Engine Oil Level Indicator Assembly
      G01168099Courtesy of MAZDA MOTORS CORP.
  3. Remove the water outlet tube.
    1. Remove the bolts.
    2. Remove the water outlet tube.
      3. Fig 3: Removing Water Outlet Tube
      G01168100Courtesy of MAZDA MOTORS CORP.
  4. Remove the A/C compressor.
    Fig 4: Removing A/C Compressor
    G01168101Courtesy of MAZDA MOTORS CORP.
    5. NOTE: The generator will be removed with the accessory bracket.
    Fig 5: Removing Accessory Bracket
    G01168102Courtesy of MAZDA MOTORS CORP.
  5. Remove the accessory bracket.
  6. Remove the right motor mount.
    Fig 6: Removing Right Motor Mount
    G01168103Courtesy of MAZDA MOTORS CORP.
  7. Disconnect the following:
    • Disconnect the coolant hose from the thermostat.
    • Disconnect the coolant hose from the EGR valve.
      • Fig 7: Removing Coolant Hoses
      G01168104Courtesy of MAZDA MOTORS CORP.
  8. Remove the coolant tube assembly.
    Fig 8: Removing Coolant Tube Assembly
    G01168105Courtesy of MAZDA MOTORS CORP.
  9. Remove the exhaust manifold and gasket.
    Fig 9: Removing Exhaust Manifold & Gasket
    G01168106Courtesy of MAZDA MOTORS CORP.
  10. Remove the block heater (if so equipped).
    Fig 10: Removing Block Heater
    G01168107Courtesy of MAZDA MOTORS CORP.
  11. Remove the water outlet.
    1. Disconnect the engine coolant temperature sender electrical connector.
    2. Remove the coolant hose.
    3. Remove the water outlet tube and the mounting gasket.
      4. Fig 11: Removing Water Outlet
      G01168108Courtesy of MAZDA MOTORS CORP.
  12. Remove the EGR valve.
    1. Disconnect the electrical connector.
    2. Remove the bolts.
    3. Remove the EGR valve.
      4. Fig 12: Removing EGR Valve
      G01168109Courtesy of MAZDA MOTORS CORP.
  13. Remove the power steering pump and reservoir as an assembly.
    Fig 13: Removing Power Steering Pump & Reservoir
    G01168110Courtesy of MAZDA MOTORS CORP.
  14. Disconnect the following electrical connectors:
    • Idle Air Control (IAC) valve.
    • Throttle Position (TP) sensor.
    • Manifold Absolute Pressure (MAP) sensor.
      • Fig 14: Disconnecting Electrical Connectors
      G01168111Courtesy of MAZDA MOTORS CORP.
  15. Disconnect the swirl control valve monitor electrical connector.
    Fig 15: Disconnecting Swirl Control Valve Monitor Electrical Connector
    G01168112Courtesy of MAZDA MOTORS CORP.
  16. Disconnect the Crankshaft Position (CKP) sensor and the wiring harness pin-type retainers.
    Fig 16: Disconnecting CKP Sensor
    G01168113Courtesy of MAZDA MOTORS CORP.
  17. Disconnect the following electrical connectors:
    • Knock Sensor (KS).
    • Electric thermostat.
    • Swirl control valve.
      • Fig 17: Disconnecting Electrical Connectors
      G01168114Courtesy of MAZDA MOTORS CORP.
  18. Disconnect the Camshaft Position (CMP) sensor electrical connector and disconnect the PCV hose from the intake manifold.
    Fig 18: Disconnecting CMP Sensor & PCV Hose
    G01168115Courtesy of MAZDA MOTORS CORP.
  19. Disconnect the engine wiring harness pin-type retainers from the intake manifold.
  20. Remove the engine wiring harness connector bracket. Position the engine wiring harness aside.
    Fig 19: Removing Engine Wiring Harness Connector Bracket
    G01168116Courtesy of MAZDA MOTORS CORP.
  21. Disconnect the EGR tube from the intake manifold.
    Fig 20: Disconnecting EGR Tube
    G01168117Courtesy of MAZDA MOTORS CORP.
  22. Remove the EGR tube.
    • Remove the EGR tube bracket from the intake manifold.
    • Disconnect the EGR tube from the cylinder head.
    • Remove the EGR tube.
    Fig 21: Removing EGR Tube
    G01168118Courtesy of MAZDA MOTORS CORP.
  23. Detach the fuel supply line clip from the front of the intake manifold. Disconnect the vacuum hose from the intake manifold.
    Fig 22: Disconnecting Fuel Supply Line Clip & Vacuum Hose
    G01168119Courtesy of MAZDA MOTORS CORP.
  24. Remove the intake manifold assembly.
    Fig 23: Removing Intake Manifold Assembly
    G01168120Courtesy of MAZDA MOTORS CORP.
  25. Disconnect the fuel injector electrical connectors. Detach the wiring harness pin-type retainers.
    Fig 24: Disconnecting Fuel Injector Electrical Connectors
    G01168121Courtesy of MAZDA MOTORS CORP.
  26. Disconnect the ignition coil and the Cylinder Head Temperature (CHT) sensor electrical connectors.
    Fig 25: Disconnecting CHT Sensor Electrical Connectors
    G01168122Courtesy of MAZDA MOTORS CORP.
  27. Detach the engine wiring harness anchors from the valve cover studs. Remove the engine wiring harness.
    Fig 26: Disconnecting Engine Wiring Harness Anchors
    G01168123Courtesy of MAZDA MOTORS CORP.
    28. CAUTION: Spark plug wires must be connected correctly. Mark the spark plug wires before removing them.
    CAUTION: It is important to twist the spark plug wire bolts while pulling upward to avoid possible damage to the spark plug wires.
    Fig 27: Disconnecting Spark Plug Wires
    G01168124Courtesy of MAZDA MOTORS CORP.
  28. With a twisting motion, use the special tool to pull the spark plug wires off the spark plugs.
  29. Remove the ignition coil.
    Fig 28: Removing Ignition Coil
    G01168125Courtesy of MAZDA MOTORS CORP.
  30. Remove the bypass hose.
    Fig 29: Removing Bypass Hose
    G01168126Courtesy of MAZDA MOTORS CORP.
  31. Remove the thermostat housing.
    Fig 30: Removing Thermostat Housing
    G01168127Courtesy of MAZDA MOTORS CORP.
  32. Remove the knock sensor and the engine vent cover.
    Fig 31: Removing Knock Sensor & Engine Vent Cover
    G01168128Courtesy of MAZDA MOTORS CORP.
  33. Remove the left motor mount.
    Fig 32: Removing Left Motor Mount
    G01168129Courtesy of MAZDA MOTORS CORP.
  34. Remove the fuel injector supply manifold with the injectors and the ground strap.
    Fig 33: Removing Fuel Injector Supply Manifold & Ground Strap
    G01168130Courtesy of MAZDA MOTORS CORP.
  35. Remove the water pump pulley.
    Fig 34: Removing Water Pump Pulley
    G01168131Courtesy of MAZDA MOTORS CORP.
  36. Remove the water pump.
    Fig 35: Removing Water Pump
    G01168132Courtesy of MAZDA MOTORS CORP.
  37. Remove the following:
    • CMP sensor.
    • CHT sensor.
    • Spark plugs.
    Fig 36: Removing CMP, CHT Sensors & Spark Plug
    G01168133Courtesy of MAZDA MOTORS CORP.
  38. Remove the valve cover.
    Fig 37: Removing Valve Cover
    G01168134Courtesy of MAZDA MOTORS CORP.
  39. Remove the CKP sensor.
    Fig 38: Removing CKP Sensor
    G01168135Courtesy of MAZDA MOTORS CORP.
  40. Remove the crankshaft vibration damper bolt and the vibration damper.
    Fig 39: Removing Crankshaft Vibration Damper
    G01168136Courtesy of MAZDA MOTORS CORP.
    41. CAUTION: There is one front cover bolt behind the cooling fan drive pulley. To remove this bolt, align one of the cooling fan drive pulley access holes with the bolt head to access the bolt.
    Fig 40: Removing Front Cover
    G01168137Courtesy of MAZDA MOTORS CORP.
  41. Remove the front cover.
  42. Remove the timing chain tensioner.
    1. Compress the timing chain tensioner plunger and insert a paper clip into the location shown.
    2. Remove the bolts.
      3. Fig 41: Removing Timing Chain Tensioner
      G01168138Courtesy of MAZDA MOTORS CORP.
  43. Remove the timing chain guides.
    Fig 42: Removing Timing Chain Guides
    G01168139Courtesy of MAZDA MOTORS CORP.
  44. Remove the timing chain assembly.
    Fig 43: Removing Timing Chain Assembly
    G01168140Courtesy of MAZDA MOTORS CORP.
    45. NOTE: Use a wrench on the flats between cylinders No. 1 and No. 2 to hold the camshaft in place.
    Fig 44: Removing Camshaft Drive Sprockets
    G01168141Courtesy of MAZDA MOTORS CORP.
  45. Remove the camshaft drive sprockets.
  46. Remove the oil pump chain tensioner and guide.
    1. Release the tension on the tensioner spring.
    2. Remove the tensioner and the shoulder bolt.
    3. Remove the guide.
    Fig 45: Removing Oil Pump Chain Tensioner & Guide
    G01168142Courtesy of MAZDA MOTORS CORP.
    47. NOTE: The oil pump chain sprocket must be held in place.
    Fig 46: Removing Oil Pump Chain & Sprockets
    G01168143Courtesy of MAZDA MOTORS CORP.
  47. Remove the oil pump chain and sprockets.
    1. Remove the bolt.
    2. Remove the chain and sprockets.
    48. CAUTION: Failure to follow the camshaft loosening procedure can result in damage to the camshafts.
    NOTE: Note the position of the lobes on the No. 1 cylinder before removing the camshafts for assembly reference.
    Fig 47: Camshaft Bearing Cap Bolt Loosening Sequence
    G01168144Courtesy of MAZDA MOTORS CORP.
  48. Remove the camshaft bearing caps.
    • Loosen the camshaft bearing cap bolts in sequence, one turn at a time.
    • Repeat the first step until all tension is released from the camshaft bearing caps.
    • Remove the camshaft bearing caps.
  49. Remove the camshafts.
  50. Remove the cylinder head bolts and the cylinder head.
    Fig 48: Removing Cylinder Head
    G01168145Courtesy of MAZDA MOTORS CORP.
  51. Remove the cylinder head gasket.
  52. Remove the cylinder head alignment dowels.
    Fig 49: Removing Cylinder Head Alignment Dowels
    G01168146Courtesy of MAZDA MOTORS CORP.
  53. Remove the oil pan.
    Fig 50: Removing Oil Pan
    G01168147Courtesy of MAZDA MOTORS CORP.
  54. Remove the rear main oil seal.
    Fig 51: Removing Oil Pump Pickup Tube & Gasket
    G01168148Courtesy of MAZDA MOTORS CORP.
  55. Remove the oil pump pickup tube and gasket.
    Fig 52: Removing Oil Pump Pickup Tube & Gasket
    G01168149Courtesy of MAZDA MOTORS CORP.
  56. Remove the oil pump assembly and gasket.
    Fig 53: Removing Oil Pump Assembly & Gasket
    G01168150Courtesy of MAZDA MOTORS CORP.
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