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Oil Pump Chain 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. Verify that the balancer shaft sprocket alignment mark and key are aligned to the positions shown in the figure.
    Fig 1: Identifying Oil Pump Chain Sprocket Alignment Mark
    G09785106Courtesy of MAZDA MOTORS CORP.
    NOTE:
    • If they are not in the positions shown in the figure, rotate the crankshaft to set cylinder No. 1 to top dead center (TDC).
  2. Slightly loosen the balancer shaft sprocket and oil pump driven sprocket installation bolts using the following procedure:
    NOTE:
    • At this stage, only loosen the installation bolts, do not remove them. Remove the bolts after removing the oil pump chain tensioner.
    1. Temporarily assemble the crankshaft sprocket, crankshaft pulley and crankshaft pulley lock bolt.
      CAUTION:
      • To prevent damage to the crankshaft pulley, protect the crankshaft pulley with a clean cloth so that the bar part (205-072) of the SST does not contact the crankshaft pulley.
    2. Install the SSTs  , and lock the oil pump and balancer unit against rotation as shown in the figure.
    3. Slightly loosen the balancer shaft sprocket and oil pump driven sprocket installation bolts.
  3. Remove the SSTs  .
  4. Remove the temporarily assembled crankshaft sprocket, crankshaft pulley and crankshaft pulley lock bolt.
    Fig 2: Removing Temporarily Assembled Crankshaft Sprocket
    G09785107Courtesy of MAZDA MOTORS CORP.
  5. Set a cloth wrapped flathead screwdriver in the gap between the oil pump drive sprocket and the oil pump chain as shown in the figure.
  6. 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: Inserting Cloth Wrapped Flathead Screwdriver In Gap Between Oil Pump Drive Sprocket And Oil Pump Chain
    G09785108Courtesy of MAZDA MOTORS CORP.
    Fig 4: Pressing Plunger Of Oil Pump Chain Tensioner
    G09785109Courtesy of MAZDA MOTORS CORP.
  7. 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.
  8. Remove the oil pump chain tensioner.
  9. Remove the oil pump chain and balancer shaft sprocket as a single unit.
  10. Remove the oil pump driven sprocket.
    Fig 5: Identifying Wire Or Paper Clip
    G09785110Courtesy of MAZDA MOTORS CORP.
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