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Oil Pump Driven Sprocket Removal Note

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Temporarily assemble the crankshaft pulley lock bolt, and lock the oil pump against rotation as shown in the figure.
  2. Slightly loosen the oil pump driven sprocket installation bolt.
    NOTE:
    • At this stage, only loosen the oil pump driven sprocket installation bolt, do not remove it. After releasing the tension on the oil pump chain tensioner, completely remove the bolt.
    Fig 1: Removing Oil Pump Driven Sprocket
    G09786753Courtesy of MAZDA MOTORS CORP.
  3. Set a cloth wrapped flathead screwdriver in the gap between oil pump drive sprocket and the oil pump chain as shown in the figure.
    Fig 2: Setting Cloth Wrapped Flathead Screwdriver In Gap Between Oil Pump Drive Sprocket And Oil Pump Chain
    G09786754Courtesy of MAZDA MOTORS CORP.
  4. Move the screwdriver in the direction of the arrow and press the oil pump chain, and then press on the plunger of the oil pump chain tensioner.
    Fig 3: Pressing Oil Pump
    G09786755Courtesy of MAZDA MOTORS CORP.
  5. Insert a wire with an approx. diameter of 1.4 mm {0.055 in}  or a paper clip into the body hole of the oil pump chain tensioner with the plunger pressed.
    NOTE:
    • The wire or paper clip secures the plunger, and the tension can be released.
  6. Remove the oil pump driven sprocket installation bolt and oil pump driven sprocket.
  7. Set the oil pump chain aside so that it does not obstruct the oil pump removal work.
    Fig 4: Identifying Wire Or Paper Clip
    G09786756Courtesy of MAZDA MOTORS CORP.
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