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Home >> Subaru >> 2021 >> Crosstrek Base, Standard Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System >> Engine Assembly >> Installation >> Gasoline Engine Model

Gasoline Engine Model

  1. Using the ST1, install the ST2 to the engine unit.

    Preparation tool: 

    ST1: BOLT (18363AA050)

    ST2: HANGER (18360AA040)

    Tightening torque: 

    43 N.m (4.4 kgf-m, 31.7 ft-lb)

    G11253169Courtesy of SUBARU OF AMERICA, INC.
  2. Install the engine mounting onto the engine.

    Tightening torque: 

    35 N.m (3.6 kgf-m, 25.8 ft-lb)

  3. Apply a small amount of grease to splines of main shaft. (MT model)

    Grease: 

    NICHIMOLY N-130 or equivalent

  4. Position the engine in engine compartment and align it with transmission.
    NOTE: Be careful not to damage adjacent parts or body panels with crank pulley, oil level gauge, etc.
  5. With a lifting device and a garage jack, slowly lower the engine together with the transmission.
    NOTE: Check that the stud bolt of the engine mounting is securely inserted into the engine mounting hole of the front crossmember.
  6. Install the bolts which hold upper side of transmission to engine.

    Tightening torque: 

    50 N.m (5.1 kgf-m, 36.9 ft-lb)

    • Impreza CVT model
      G08316854Courtesy of SUBARU OF AMERICA, INC.
    • Crosstrek CVT model
      G13600632Courtesy of SUBARU OF AMERICA, INC.
    • MT model
      G08316855Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the garage jack.
  8. Remove the lifting device and wire ropes.
  9. Remove the ST1 and ST2 from the engine unit.
    G11253169Courtesy of SUBARU OF AMERICA, INC.
  10. Install the torque converter to drive plate. (2.0 L CVT model)
    1. Remove the ST from converter case.
      NOTE: Be careful not to drop the ST into the converter housing when removing the ST.
      • Impreza model
        G08316853Courtesy of SUBARU OF AMERICA, INC.
      • Crosstrek model
        G13600625Courtesy of SUBARU OF AMERICA, INC.
    2. Insert the wrench into the crank pulley bolt, and rotate the crank pulley to install the bolts (6 places) which hold the torque converter to the drive plate using the ST.
      NOTE:
      • Be careful not to drop bolts into the converter housing.
      • When not using the ST, use a crowfoot wrench for tightening.
      • Use the following formula to calculate the reading of a torque wrench when tightening with a crowfoot wrench.

      Calculation formula

      T = 25 N.m (2.5 kgf-m, 18.4 ft-lb) x L1/(L1 + L2)

      T: Reading of the torque wrench

      L1: Effective length of the torque wrench

      L2: Effective length of the crowfoot wrench

      NOTE: If the effective length of the tool used is unknown, consult the manufacturer of the tool.
      G13875991Courtesy of SUBARU OF AMERICA, INC.

      Preparation tool: 

      ST: SOCKET (18270AA050)

      Tightening torque: 

      25 N.m (2.5 kgf-m, 18.4 ft-lb)

      G11253182Courtesy of SUBARU OF AMERICA, INC.
    3. Install plug (E) to the service hole, and connect the PCV hose (D) to the intake manifold assembly and the PCV valve.
    4. Install the clip (C) to the bracket, and connect connector (B) and connector (A).
      G11253164Courtesy of SUBARU OF AMERICA, INC.
  11. Install the torque converter to drive plate. (2.5 L model)
    1. Remove the ST from converter case.
      NOTE: Be careful not to drop the ST into the converter housing when removing the ST.
      G13600625Courtesy of SUBARU OF AMERICA, INC.
    2. Insert the wrench into the crank pulley bolt, and rotate the crank pulley to attach the four bolts securing the torque converter to the drive plate.
      NOTE: Be careful not to drop bolts into the converter housing.

      Tightening torque: 

      25 N.m (2.5 kgf-m, 18.4 ft-lb)

      G13603122Courtesy of SUBARU OF AMERICA, INC.
    3. Install the plug (B) to the service hole, and connect the connector (A).
      G13875957Courtesy of SUBARU OF AMERICA, INC.
    4. Attach the PCV hose No. 1. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO (EXCEPT FOR HEV))>PCV HOSE>INSTALLATION>PCV HOSE NO. 1 .
  12. Install the starter. Ref. to STARTING/CHARGING SYSTEMS (H4DO (EXCEPT FOR HEV))>STARTER> INSTALLATION .
  13. Lift up the vehicle.
  14. Install the bolts and nuts which hold lower side of the transmission to engine.

    Tightening torque: 

    50 N.m (5.1 kgf-m, 36.9 ft-lb)

    • Impreza CVT model
      G08316839Courtesy of SUBARU OF AMERICA, INC.
    • Crosstrek CVT model
      G13600620Courtesy of SUBARU OF AMERICA, INC.
    • MT model
      G08316840Courtesy of SUBARU OF AMERICA, INC.
  15. Install the crossmember support - rear RH. Ref. to FRONT SUSPENSION>CROSSMEMBER SUPPORT> INSTALLATION .
  16. Install the nuts which hold the engine mounting to the front crossmember. (CVT model)
    CAUTION: Use new nuts.
    NOTE: Make sure that locators (a) of the engine mounting are securely inserted.

    Tightening torque: 

    90 N.m (9.2 kgf-m, 66.4 ft-lb)

    G11253186Courtesy of SUBARU OF AMERICA, INC.
  17. Install the nuts which hold the engine mounting to the front crossmember. (MT model)
    CAUTION: Use new nuts.

    Tightening torque: 

    90 N.m (9.2 kgf-m, 66.4 ft-lb)

    G11253161Courtesy of SUBARU OF AMERICA, INC.
  18. Connect the ground cord.

    Tightening torque: 

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

    G11253159Courtesy of SUBARU OF AMERICA, INC.
  19. Lower the vehicle.
  20. Connect the fuel delivery tube and evaporation hose.
    1. Connect the quick connector on the fuel delivery tube (C) to the fuel pipe, and install clip (B) to the intake manifold assembly.
      CAUTION:
      • Check that there is no damage or dust on the quick connector. If necessary, clean the seal surface of the pipe.
      • When connecting the quick connector, make sure to insert it all the way in before locking the slider.
      • When it is difficult to lock the slider, check that the connector is fully inserted.
      • After locking the slider, pull the quick connector itself to the disconnecting direction, and then push to the connecting direction in order to confirm secure connection. Always make sure to perform this confirmation ending up with a pushing in.
      NOTE: Connect the quick connector as shown in the figure.
      G13876003Courtesy of SUBARU OF AMERICA, INC.
    2. Connect the evaporation hose (A) to clip (B), and connect evaporation hose (A) to purge control solenoid valve.
      • 2.0 L model
        G11253168Courtesy of SUBARU OF AMERICA, INC.
      • 2.5 L model
        G13618844Courtesy of SUBARU OF AMERICA, INC.
  21. Connect the water hose (C) and water hose (B) to the CVTF cooler (with warmer feature) and the EGR cooler. (CVT model)
  22. Connect the brake booster vacuum hose (A) to the vacuum pump.
    NOTE: When connecting the brake booster vacuum hose, align the alignment marks (a) on the vacuum pump and the brake booster vacuum hose.
    G13230034Courtesy of SUBARU OF AMERICA, INC.

    Clearance between brake booster vacuum hose and peripheral parts: 

    15 mm (0.59 in) or more

    • Impreza model
      G11253158Courtesy of SUBARU OF AMERICA, INC.
    • Crosstrek model
      G13875946Courtesy of SUBARU OF AMERICA, INC.
  23. Remove the bolt and turn the transmission harness counterclockwise to install the transmission harness to the valve cover. (Impreza CVT model)

    Tightening torque: 

    7 N.m (0.7 kgf-m, 5.2 ft-lb)

    G11253192Courtesy of SUBARU OF AMERICA, INC.
  24. Install the TCM. (Impreza CVT model) Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 IMPREZA)>TRANSMISSION CONTROL MODULE (TCM)>INSTALLATION .
  25. Install the pitching stopper. (Except for Impreza CVT model)

    CVT model: 

    Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580 CROSSTREK)>TRANSMISSION MOUNTING SYSTEM>INSTALLATION>PITCHING STOPPER .

    5MT model: 

    Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>TRANSMISSION MOUNTING SYSTEM>INSTALLATION>PITCHING STOPPER .

    6MT model: 

    Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (6MT)>TRANSMISSION MOUNTING SYSTEM>INSTALLATION>PITCHING STOPPER .

  26. Connect the transmission harness connector to the engine wiring harness. (CVT model)
    G11253156Courtesy of SUBARU OF AMERICA, INC.
  27. Connect the heater inlet hose (A) and the heater outlet hose (B).
    NOTE: Be careful not to mix up the heater inlet hose and the heater outlet hose when connecting them.
    • 2.0 L model
      G13876011Courtesy of SUBARU OF AMERICA, INC.
    • 2.5 L model
      G13876012Courtesy of SUBARU OF AMERICA, INC.
      G11253155Courtesy of SUBARU OF AMERICA, INC.
  28. Place the engine wiring harness and secure the engine wiring harness to the bracket with the claw (A).
  29. Set the battery cable assembly, and secure the battery cable assembly to the bracket with claw (B).
    G13224267Courtesy of SUBARU OF AMERICA, INC.
  30. Install the engine wiring harness to the clip (C), and connect the connector (B) to the main fuse box.
  31. Connect connector (A) to ECM.
    CAUTION: To prevent damage to the connector (A), when connecting the connector (A), insert the connector (A) straight in until it stops, and while maintaining the position, lock the lever.
    NOTE: When connecting the connector (A), check that the lever is located at the position shown in the figure (position beyond the lock portion (a)).
    G13223993Courtesy of SUBARU OF AMERICA, INC.
    G13600608Courtesy of SUBARU OF AMERICA, INC.
  32. Secure the battery cable assembly with the claw (E) and clip (D).
  33. Install the engine wiring harness to the clip (C), and connect the connector (B).
  34. Connect the brake booster vacuum hose (A).
    • 2.0 L model
      G11253152Courtesy of SUBARU OF AMERICA, INC.
    • 2.5 L model
      G13867823Courtesy of SUBARU OF AMERICA, INC.
  35. Connect the hose - pressure suction and the hose - pressure discharge to the A/C compressor. (Fixed displacement compressor model) Ref. to AIR CONDITIONER (EXCEPT FOR HEV)>HOSE AND PIPE> INSTALLATION .
  36. Secure the battery cable assembly with the clip (A) and clip (B). (Fixed displacement compressor model)
  37. Connect the connector (C), connector (D), and the terminal (E). (Fixed displacement compressor model)

    Tightening torque: 

    15.5 N.m (1.6 kgf-m, 11.4 ft-lb)

    G11252805Courtesy of SUBARU OF AMERICA, INC.
  38. Connect the hose - pressure suction and the hose - pressure discharge to the A/C compressor. (Variable displacement compressor model) Ref. to AIR CONDITIONER (EXCEPT FOR HEV)>HOSE AND PIPE> INSTALLATION .
  39. Secure the battery cable assembly with the clip (A) and clip (B). (Variable displacement compressor model)
  40. Connect the connector (C), connector (D), connector (E), and the terminal (F). (Variable displacement compressor model)

    Tightening torque: 

    15.5 N.m (1.6 kgf-m, 11.4 ft-lb)

    • 2.0 L model
      G11252806Courtesy of SUBARU OF AMERICA, INC.
    • 2.5 L model
      G13875380Courtesy of SUBARU OF AMERICA, INC.
  41. Install the radiator. Ref. to COOLING (H4DO (EXCEPT FOR HEV))>RADIATOR>INSTALLATION .
  42. Install the air intake case (rear). Ref. to INTAKE (INDUCTION) (H4DO (EXCEPT FOR HEV))>AIR CLEANER CASE>INSTALLATION .
  43. Install the air intake boot. Ref. to INTAKE (INDUCTION) (H4DO (EXCEPT FOR HEV))>AIR INTAKE BOOT> INSTALLATION .
  44. Connect the ground terminal of the battery sensor and the positive terminal of the battery. Ref. to REPAIR CONTENTS>REPAIR CONTENT'S>NOTE>BATTERY .
  45. Install the fuel filler cap, and close the fuel filler lid.
  46. Fill engine coolant.

    2.0 L model: 

    Ref. to COOLING (H4DO (EXCEPT FOR HEV))>ENGINE COOLANT>REPLACEMENT>FILLING OF ENGINE COOLANT>2.0 L MODEL .

    2.5 L model: 

    Ref. to COOLING (H4DO (EXCEPT FOR HEV))>ENGINE COOLANT>REPLACEMENT>FILLING OF ENGINE COOLANT>2.5 L MODEL .

  47. Set the front hood to the normal position. Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>STAY ASSEMBLY - FRONT HOOD .
  48. Install the striker - front hood. Ref. to EXTERIOR BODY PANELS>FRONT HOOD>ASSEMBLY .
  49. Close the front hood.
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