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Engine Assembly: Installation

NOTE: Do not start the engine before charging refrigerant. If the engine is started, replace the compressor assembly.
  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) 

    G16761042Courtesy of SUBARU OF AMERICA, INC.
  2. Support the engine unit with a lifting device and wire ropes, and remove the engine unit from the engine stand, etc.
  3. Install the engine mounting onto the engine unit.

    Tightening torque  :

    35 N.m (3.6 kgf-m, 25.8 ft-lb) 

  4. Place the engine unit 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  .
    • If it is hard to insert the knock pin on the engine unit into the transmission body, precisely adjust the height of the transmission body with garage jack so that no load is applied to the knock pin  .
  5. With a lifting device and a garage jack, slowly lower the engine unit together with the transmission.
  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) 

    G16761045Courtesy 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.
    G16761042Courtesy of SUBARU OF AMERICA, INC.
  10. Install the torque converter to drive plate. (2.0 L model)
    1. Remove the ST from converter case.
      NOTE: Be careful not to drop the ST into the converter housing.
      G14403719Courtesy 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.
      G11253181Courtesy of SUBARU OF AMERICA, INC.
      (a) Effective length of the crowfoot wrench (L2)
      (b) Effective length of the torque wrench (L1)
      (c) Center of the open end of crowfoot wrench
      (d) Center of drive square of the torque wrench
      (e) Center of the position where a force is applied by hand

      Preparation tool  :

      ST: SOCKET (18270AA050) 

      Tightening torque  :

      25 N.m (2.5 kgf-m, 18.4 ft-lb) 

      G16761052Courtesy of SUBARU OF AMERICA, INC.
    3. Fit the plug (A) to service hole.
    4. Install the clip (B) to the bracket, and connect connector (C) and connector (D).
      G16761053Courtesy of SUBARU OF AMERICA, INC.
    5. Attach the PCV hose No. 1. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO)>PCV HOSE>INSTALLATION>PCV HOSE NO. 1 .
  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.
      G14403719Courtesy of SUBARU OF AMERICA, INC.
    2. Insert the wrench into the crank pulley bolt, and rotate the crank pulley to attach the bolts (4 places) 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) 

      G16761038Courtesy of SUBARU OF AMERICA, INC.
    3. Install the plug (A) to the service hole, and connect the connector (B).
      G16761056Courtesy of SUBARU OF AMERICA, INC.
    4. Attach the PCV hose No. 1. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO)>PCV HOSE>INSTALLATION>PCV HOSE NO. 1 .
  12. Install the starter. Ref. to STARTING/CHARGING SYSTEMS (H4DO)>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) 

    G16761033Courtesy 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 crossmember COMPL front.
    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) 

    G16761058Courtesy of SUBARU OF AMERICA, INC.
  17. Connect the ground cord.

    Tightening torque  :

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb) 

    G16761031Courtesy of SUBARU OF AMERICA, INC.
  18. Lower the vehicle.
  19. Connect the fuel delivery tube and evaporation hose.
    1. Connect the quick connector on the fuel delivery tube (A) 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.
      G16761005Courtesy of SUBARU OF AMERICA, INC.
      (a)  Slider 
    2. Connect the evaporation hose (C) to clip (B), and connect evaporation hose (C) to purge control solenoid valve.
      G16761061Courtesy of SUBARU OF AMERICA, INC.
  20. Connect the water hose (A) and water hose (B) to the EGR cooler and CVTF cooler (with warmer feature).
    G16761062Courtesy of SUBARU OF AMERICA, INC.
  21. Install the TCM. (Impreza model) Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>TRANSMISSION CONTROL MODULE (TCM)>INSTALLATION .
  22. Install the pitching stopper. (Crosstrek model) Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>TRANSMISSION MOUNTING SYSTEM>INSTALLATION>PITCHING STOPPER .
  23. Connect the transmission harness connector to the engine wiring harness.
    G16761029Courtesy of SUBARU OF AMERICA, INC.
  24. Connect the heater outlet hose (A) and the heater inlet hose (B).
    NOTE: Be careful not to mix up the heater inlet hose and the heater outlet hose when connecting them.
    NOTE:
    • 2.0 L model 
      G16761064Courtesy of SUBARU OF AMERICA, INC.
      (a)  Heater inlet hose 
      (b)  Heater outlet hose 
      (c)  To water pipe ASSY 
      (d)  To water pipe LH 
      (e)  To heater core ASSY 
      (f)  Engine coolant flow 
    • 2.5 L model 
      G16761065Courtesy of SUBARU OF AMERICA, INC.
      (a)  Heater inlet hose 
      (b)  Heater outlet hose 
      (c)  To water pipe ASSY 
      (d)  To water pipe LH 
      (e)  To heater core ASSY 
      (f)  Engine coolant flow 
    G16761066Courtesy of SUBARU OF AMERICA, INC.
  25. Place the engine wiring harness and secure the engine wiring harness to the bracket with the claw (A).
  26. Set the battery cable assembly, and secure the battery cable assembly to the bracket with claw (B).
    G16761067Courtesy of SUBARU OF AMERICA, INC.
  27. Install the engine wiring harness to the clip (A), and connect the connector (B) to the main fuse box.
  28. Connect the connector (C) to ECM.
    CAUTION: To prevent damage to the connector (C), when connecting the connector (C), insert the connector (C) straight in until it stops, and while maintaining the position, lock the lever.
    NOTE: Check that the lever is located at the position shown in the figure (position beyond the lock portion (a)).
    G16523385Courtesy of SUBARU OF AMERICA, INC.
    G16761069Courtesy of SUBARU OF AMERICA, INC.
  29. Secure the battery cable assembly with the claw (A) and clip (B).
  30. Hold the engine wiring harness with the clip (C), and connect the connector (D).
    G16761070Courtesy of SUBARU OF AMERICA, INC.
  31. Connect the hose pressure suction and the hose pressure discharge to the A/C compressor. Ref. to AIR CONDITIONER>HOSE AND PIPE>INSTALLATION .
  32. Secure the battery cable assembly with the clip (A) and clip (B).
  33. Connect the connector (C), connector (D), and the terminal (E).

    Tightening torque  :

    15.5 N.m (1.6 kgf-m, 11.4 ft-lb) 

    G16761071Courtesy of SUBARU OF AMERICA, INC.
  34. Install the radiator. Ref. to COOLING (H4DO)>RADIATOR>INSTALLATION .
  35. Install the air cleaner case (rear). Ref. to INTAKE (INDUCTION) (H4DO)>AIR CLEANER CASE>INSTALLATION .
  36. Install the air intake boot. Ref. to INTAKE (INDUCTION) (H4DO)>AIR INTAKE BOOT>INSTALLATION .
  37. Connect the positive terminal of the battery, and then connect the ground terminal to the battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  38. Install the fuel filler cap, and close the fuel filler lid.
  39. Fill engine coolant.

    2.0 L model  :

    Ref. to COOLING (H4DO)>ENGINE COOLANT>REPLACEMENT>FILLING OF ENGINE COOLANT>2.0 L MODEL (WHEN DRAINING THE FULL AMOUNT OF COOLANT) .

    2.5 L model  :

    Ref. to COOLING (H4DO)>ENGINE COOLANT>REPLACEMENT>FILLING OF ENGINE COOLANT>2.5 L MODEL (WHEN DRAINING THE FULL AMOUNT OF COOLANT) .

  40. Set the hood COMPL front to the normal position. Ref. to REPAIR CONTENTS>NOTE>STAY ASSEMBLY FRONT HOOD .
  41. Install the striker assembly front hood. Ref. to EXTERIOR BODY PANELS>FRONT HOOD>ASSEMBLY .
  42. Close the hood COMPL front.
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