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Engine Mount Installation Note

CAUTION:
  • Slots have been adopted for the No. 3 engine mount and No. 4 engine mount bracket installation holes. Tighten the installation bolts and nuts so that they are centered on the slots. Otherwise, engine noise or vibration could increase.
NOTE:
  • When loosening the nuts of the No. 3 engine mount and the No. 4 engine mount bracket, the engine front cover and the transaxle stud bolt may loosen.
  1. Tighten the engine front cover stud bolts.
    G09074286Courtesy of MAZDA MOTORS CORP.

    Tightening torque 

    7-13 N.m {72-132 kgf.cm, 62-115 in.lbf}

  2. Measure the projection of the transaxle stud bolts. (MTX)
    G13149150Courtesy of MAZDA MOTORS CORP.

    Projection A of stud bolt No. 1 

    40-42 mm {1.58-1.65 in}

    Projection B of stud bolt No. 2 

    30.7-32.7 mm {1.21-1.28 in}

    Projection C of stud bolt No. 3 

    70.7-72.7 mm {2.79-2.86 in}

    • If the projection amount is not within the range, adjust the projection amount of the stud bolt.
  3. Tighten the transaxle stud bolts. (ATX)
    G13149151Courtesy of MAZDA MOTORS CORP.

    Tightening torque 

    15-25 N.m {1.6-2.5 kgf.m, 12-18 ft.lbf}

    CAUTION:
    • When supporting the engine and transaxle, insert rubber of appropriate size (approx. 20 mm {0.79 in} thickness) between the engine lifter and the oil pan, transaxle to prevent the deformation of the oil pan and damage of the transaxle.
  4. Secure the engine and transaxle using a commercially available engine lifter.
    G13149152Courtesy of MAZDA MOTORS CORP.
  5. Temporarily tighten the No. 3 engine mount installation bolts and nuts using the following procedure:
    1. Temporarily tighten the bolts shown in the figure so that they are centered on the No. 3 engine mount slots.
      G13149153Courtesy of MAZDA MOTORS CORP.
    2. Temporarily tighten the nuts shown in the figure so that the stud bolts of the engine front cover are centered on the No. 3 engine mount slots.
      • If the stud bolts are deviated from the center of the slots, align the stud bolts with the center of the slots while slightly moving the engine, and temporarily tighten the installation nuts.
    G13149154Courtesy of MAZDA MOTORS CORP.
  6. Temporarily tighten the No. 4 engine mount bracket installation bolt and nuts using the following procedure:
    1. Temporarily tighten the bolt shown in the figure.
      G13149155Courtesy of MAZDA MOTORS CORP.
    2. Temporarily tighten the nuts shown in the figure so that they are centered on the No. 4 engine mount bracket slots.
      • If the stud bolts are deviated from the center of the slots, align the stud bolts with the center of the slots while slightly moving the transaxle, and temporarily tighten the installation nuts.
    G13149156Courtesy of MAZDA MOTORS CORP.
  7. Install the No. 1 engine mount bracket and temporarily tighten the bolts shown in the figure. (2WD)
    G13149157Courtesy of MAZDA MOTORS CORP.
  8. Tighten the No. 1 engine mount bracket installation bolts in the order shown in the figure. (2WD)
    Fig 1: No. 1 Engine Mount Bracket Installation Bolts Tightening Sequence
    G13149158Courtesy of MAZDA MOTORS CORP.

    Tightening torque 

    84-98 N.m {8.6-9.9 kgf.m, 62-72 ft.lbf}

  9. Install the No. 1 engine mount rubber and the front crossmember component as a single unit. (See FRONT CROSSMEMBER REMOVAL/INSTALLATION .)
  10. Temporarily tighten the No. 1 engine mount rubber installation bolts.

    2WD 

    G13149159Courtesy of MAZDA MOTORS CORP.

    AWD 

    G13149160Courtesy of MAZDA MOTORS CORP.
  11. Tighten the No. 3 engine mount installation bolts and nuts in the order shown in the figure.
    Fig 2: No. 3 Engine Mount Installation Bolts And Nuts Tightening Sequence
    G13149161Courtesy of MAZDA MOTORS CORP.
    TIGHTENING TORQUE SPECIFICATIONS

    Installation position Tightening torque
    1 76-95 N.m {7.8-9.6 kgf.m, 57-70 ft.lbf}
    2 82-95 N.m {8.4-9.6 kgf.m, 61-70 ft.lbf}
    3 49-65 N.m {5.0-6.6 kgf.m, 37-47 ft.lbf}
  12. Tighten the No. 4 engine mount bracket installation bolt and nuts in the order shown in the figure.
    Fig 3: No. 4 Engine Mount Bracket Installation Bolt And Nuts Tightening Sequence
    G13149162Courtesy of MAZDA MOTORS CORP.
    TIGHTENING TORQUE SPECIFICATIONS

    Installation position Tightening torque
    1, 2, 3 92-116 N.m {9.4-11 kgf.m, 68-85 ft.lbf}
    4 81-99 N.m {8.3-10 kgf.m, 60-73 ft.lbf}
  13. Tighten the No. 1 engine mount rubber installation bolts in the order shown in the figure.

    2WD 

    Fig 4: No. 1 Engine Mount Rubber Installation Bolts Tightening Sequence (2WD)
    G13149163Courtesy of MAZDA MOTORS CORP.

    AWD 

    Fig 5: No. 1 Engine Mount Rubber Installation Bolts Tightening Sequence (AWD)
    G13149164Courtesy of MAZDA MOTORS CORP.
    TIGHTENING TORQUE SPECIFICATIONS

    Installation position Tightening torque
    1 141-172 N.m {15-17 kgf.m, 104-126 ft.lbf}
    2 130-164 N.m {14-16 kgf.m, 96-120 ft.lbf}
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