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Home >> Mazda >> 2017 >> CX-3 Touring, AWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System >> Fuel Pump Unit Removal/Installation >> Fuel Pump Cap Installation Note
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Fuel Pump Cap Installation Note

NOTE:
  • The fuel pump unit will rotate and cannot be secured in the specified position if there is any gasoline on the packing. Thoroughly wipe away all gasoline from the packing.
  • Make the markings to be easily visible when the fuel pump cap is installed.
  • Marks are provided on the fuel pump unit and fuel tank for correct installation of the fuel pump unit.
  • Tighten the fuel pump cap using a torque wrench to prevent fuel leakage.
  1. Mark the fuel pump cap and the fuel tank at the point where the threading of each part begins as shown in the figure.
    Fig 1: Mark On Fuel Pump Cap And Fuel Tank
    G11436933Courtesy of MAZDA
  2. Align the fuel tank alignment mark with the fuel pump unit as shown in the figure.
    Fig 2: Aligning Fuel Tank Alignment Mark With Fuel Pump Unit
    G11436934Courtesy of MAZDA
  3. Align the fuel tank and fuel pump cap markings.
    Fig 3: Aligning Fuel Tank And Fuel Pump Cap Markings
    G11436935Courtesy of MAZDA
  4. Rotate the fuel pump cap counterclockwise until the cap marking is approx. 15° away from the fuel tank marking as shown in the figure.
    Fig 4: Checking Cap Marking Dimension
    G11436936Courtesy of MAZDA
  5. While keeping the fuel pump unit from rising up, tighten the fuel pump cap by hand 180 ° clockwise.
    Fig 5: Fuel Pump Cap Tightening Angle
    G11436937Courtesy of MAZDA
    CAUTION:
    • The cap could be damaged if the SST (wrench) is used with any play between the cap and the SST (wrench). Securely install the SST (wrench) so that there is no gap between the SST (wrench) tabs and the side of the cap.
  6. Set the SST (wrench) as shown in the figure.
    Fig 6: Setting SST
    G11436938Courtesy of MAZDA
    NOTE:
    • The total rotation angle is 450-495 ° if the approx. 180° from Step  6 is included.
  7. Using a torque wrench, tighten the fuel pump cap with both of the following specified rotation angle and specified torque met being careful not to shift the marks on the fuel pump unit and fuel pump cap.
Fig 7: Fuel Pump Cap Rotation Angle And Fuel Pump Unit Alignment Marks
G11436939Courtesy of MAZDA
CAUTION:
  • To avoid exceeding the specified rotation angle due to excessive torque, tighten the fuel pump cap starting from the minimum value of 50N.m {5.1 kgf.m, 37 ft.lbf} and gradually increase the tightening torque without exceeding the maximum value of 140N.m {14 kgf.m, 103 ft.lbf}, and secure the specified rotation angle of 270-315°.

    Rotation angle 

    270-315°

    Fuel pump cap tightening torque 

    50-140 N.m {5.1-14 kgf.m, 37-103 ft.lbf}

  • If the specified tightening torque cannot be obtained, replace the fuel pump cap and packing.
  • If the specified tightening torque cannot be obtained after replacement of the fuel pump cap and packing, replace the fuel tank.
NOTE:
  • The total rotation angle is 450-495 ° if the approx.180 ° from Step  5 is included.
Fig 8: Checking Fuel Pump Cap Tightening Angle
G11436940Courtesy of MAZDA