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Home >> Mazda >> 2005 >> B4000 SE, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 607 (Engine Mechanical [Service Information 2.3L]) >> Crankshaft Pulley Removal/Installation - 2.3L >> Removal

Crankshaft Pulley Removal/Installation - 2.3L: Removal

WARNING: This page is about a different car, the 2005 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, with diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if you loosen the pulley. Therefore, the engine must be retimed each time the damper is removed. Otherwise severe damage can occur.
  1. Remove the fan and shroud. See ELECTRIC COOLING FAN REMOVAL/INSTALLATION - 2.3L .
  2. Remove the accessory drive belt. See DRIVE BELT REMOVAL/INSTALLATION - 2.3L .
  3. Remove the valve cover. See VALVE COVER REMOVAL/INSTALLATION - 2.3L .
    CAUTION:
    • Failure to position the No. 1 piston at top dead center (TDC) can result in damage to the engine. Turn the engine in the normal direction of rotation only.
  4. Using the crankshaft pulley bolt, turn the crankshaft clockwise to position the No. 1 piston at TDC.
    Fig 1: Identifying Crankshaft Pulley Bolt
    G03728104Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • The special tool is for camshaft alignment only. Using this tool to prevent engine rotation can result in engine damage.
    NOTE:
    • The camshaft timing slots are offset. If the special tool cannot be installed, rotate the crankshaft one complete revolution clockwise to correctly position the camshafts.
  5. Install the special tool in the slots on the rear of both camshafts.
    Fig 2: Installing Special Tool In Slots On Rear Of Both Camshafts
    G03728105Courtesy of MAZDA MOTORS CORP.
  6. Remove the plug bolt.
    Fig 3: Removing Plug Bolt
    G03728106Courtesy of MAZDA MOTORS CORP.
    NOTE:
    • Only turn the engine in the normal direction of rotation.
    NOTE:
    • Installing the special tool in this step will prevent the engine from being rotated in the clockwise direction. However, the engine can still be rotated in the counterclockwise direction.
  7. Install the special tools.
    Fig 4: Installing Special Tools (1 Of 3)
    G03728107Courtesy of MAZDA MOTORS CORP.
  8. Install a M6 X 1.0 X 2.25 bolt (Mazda part # 1F20-12-428) to verify ignition timing.
    Fig 5: Installing Bolt
    G03728108Courtesy of MAZDA MOTORS CORP.
  9. Install the special tools.
    Fig 6: Installing Special Tools (2 Of 3)
    G03728109Courtesy of MAZDA MOTORS CORP.
    Fig 7: Installing Special Tools (3 Of 3)
    G03728110Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • Failure to hold the crankshaft pulley in place during bolt loosening can cause damage to the engine.
  10. Remove the bolt and the crankshaft pulley.
    1. Remove the crankshaft bolt.
    2. Remove the special tools.
    3. Remove the M6 bolt.
    4. Remove the crankshaft pulley.
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