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Home >> Subaru >> 2022 >> WRX Base, Standard Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System >> Engine Assembly >> Removal

Engine Assembly: Removal

  1. Remove the striker assembly front hood. Ref. to EXTERIOR BODY PANELS>FRONT HOOD>DISASSEMBLY
    NOTE:

    This procedure is necessary to prevent the lifting device and the striker assembly front hood from contacting with each other and causing damage. However, the procedure may be omitted if it is assured that the lifting device to be used will not make a contact. 

  2. Fully open the panel COMPL front hood. Ref. to REPAIR CONTENTS>NOTE>FRONT HOOD GAS STAY
  3. Release the fuel pressure. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL>PROCEDURE>RELEASING OF FUEL PRESSURE
  4. Open the fuel filler lid and remove the fuel filler cap.
    NOTE:

    This operation is required to release the inner pressure of the fuel tank. 

  5. Disconnect the ground terminal from battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY
  6. Collect the refrigerant. Ref. to AIR CONDITIONER>REFRIGERANT RECOVERY PROCEDURE>PROCEDURE
  7. Remove the radiator. Ref. to COOLING (H4DOTC)>RADIATOR>REMOVAL
  8. Remove the crossmember support rear RH. Ref. to FRONT SUSPENSION>CROSSMEMBER SUPPORT>REMOVAL
  9. Remove the intake duct No. 1 and intake duct No. 2.

    Intake duct No. 1: 

    Ref. to INTAKE (INDUCTION) (H4DOTC)>Intake Duct>REMOVAL>INTAKE DUCT NO. 1

    Intake duct No. 2: 

    Ref. to INTAKE (INDUCTION) (H4DOTC)>INTAKE DUCT>REMOVAL>INTAKE DUCT NO. 2

  10. Remove the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>REMOVAL
  11. Disconnect the connector (A), connector (B) and terminal (C), and remove the clip (D).
  12. Disconnect the hose - pressure suction and the hose - pressure discharge from the A/C compressor. Ref. to AIR CONDITIONER>HOSE AND PIPE>REMOVAL
    G14610567Courtesy of SUBARU OF AMERICA, INC.
  13. Remove clip (A) securing battery cable assembly.
  14. Remove the claw (B) securing the battery cable assembly, and place it aside so that it does not interfere with work.
    G14600902Courtesy of SUBARU OF AMERICA, INC.
  15. Remove the connector (A) and connector (B) in numerical order shown in figure.
  16. Disconnect the connector (C), and remove the engine wiring harness from the clip (D).
    G14600903Courtesy of SUBARU OF AMERICA, INC.
  17. Release the claw securing the engine wiring harness to the bracket, and place it aside so that it does not interfere with work.
    G14600904Courtesy of SUBARU OF AMERICA, INC.
  18. Disconnect the heater inlet hose (A) and the heater outlet hose (B).
    G14610571Courtesy of SUBARU OF AMERICA, INC.
  19. Disconnect the connector (A), connector (B), connector (C), and remove the clip (D), clip (E) and clip (F). (CVT model)
    G14610572Courtesy of SUBARU OF AMERICA, INC.
  20. Disconnect the connector (A) and connector (B), and remove the bolt securing the vacuum pipe to the engine rear hanger. (MT model)
    G14610573Courtesy of SUBARU OF AMERICA, INC.
  21. Remove the pitching stopper.

    CVT model: 

    Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION MOUNTING SYSTEM>REMOVAL>PITCHING STOPPER

    MT model: 

    Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (TY75)>TRANSMISSION MOUNTING SYSTEM>REMOVAL>PITCHING STOPPER

  22. Disconnect the water hose from CVTF cooler (with warmer feature). (CVT model)
    G14610574Courtesy of SUBARU OF AMERICA, INC.
  23. Disconnect the brake booster vacuum hose from the brake vacuum pump, and place it aside so that it does not interfere with the work. (MT model)
    NOTE:

    Before disconnecting the brake booster vacuum hose, use a marker to put an alignment mark (a) at the position shown in the figure when the clip is slid. 

    G13862471Courtesy of SUBARU OF AMERICA, INC.
    G14610576Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the front exhaust pipe. Ref. to EXHAUST (H4DOTC)>FRONT EXHAUST PIPE>REMOVAL
  25. Set the ST between the vehicle and the rear crossmember. (CVT model)
    CAUTION:

    Be sure to use the M10 x 60 x 1.25 bolts in the strength range of 8.8 (8.8 or 8 stamped on bolt head) or more in order to avoid damage to the vehicle body. 

    NOTE:
    • This procedure is required to ensure the necessary clearance between the vehicle and the transmission body when removing/installing the engine. 
    • It is necessary to prepare four sets (eight pieces) of the ST and four M10 x 60 x 1.25 bolts in the strength range of 8.8 (8.8 or 8 stamped on bolt head) or more. 

    Preparation tool: 

    ST: ADAPTER (18362AA020)

    1. Remove the center exhaust cover.
      G14610577Courtesy of SUBARU OF AMERICA, INC.
    2. Set the transmission jack to the transmission body.
      NOTE:

      Be careful that the support plate of transmission jack does not touch the transmission oil pan. 

    3. Remove the bolt securing the rear crossmember to the vehicle.
      G14610578Courtesy of SUBARU OF AMERICA, INC.
    4. Operate the transmission jack to adjust the transmission body height, and set ST using the M10 x 60 x 1.25 bolts in the strength range of 8.8 (8.8 or 8 stamped on bolt head) or more between the vehicle and the rear crossmember.

      Tightening torque: 

      70 N.m (7.1 kgf-m, 51.6 ft-lb)

      G14610579Courtesy of SUBARU OF AMERICA, INC.
    5. Remove the transmission jack.
  26. Disconnect the ground cord on the engine unit side.
    G14610580Courtesy of SUBARU OF AMERICA, INC.
  27. Disconnect the water hose from CVTF cooler (with warmer feature), and remove the lower bolt securing the CVTF cooler (with warmer feature) to the CVT. (CVT model)
    G14610581Courtesy of SUBARU OF AMERICA, INC.
  28. Remove the nuts which secure the engine mounting to the crossmember COMPL front.
    G14610582Courtesy of SUBARU OF AMERICA, INC.
  29. Remove the bolts and nuts which hold the lower side of transmission to the engine unit.
    • CVT model
      G14610583Courtesy of SUBARU OF AMERICA, INC.
    • MT model
      G14610584Courtesy of SUBARU OF AMERICA, INC.
  30. Lower the vehicle.
  31. Remove the upper bolt securing the CVTF cooler (with warmer feature) to the CVT, and move the CVTF cooler (with warmer feature) at the locations that do not interfere operation. (CVT model)
    G14610585Courtesy of SUBARU OF AMERICA, INC.
  32. Remove the starter. Ref. to STARTING/CHARGING SYSTEMS (H4DOTC)>STARTER>REMOVAL
  33. Separate the torque converter from drive plate. (CVT model)
    1. Remove the plug from the service hole.
      G14610586Courtesy of SUBARU OF AMERICA, INC.
    2. Insert the wrench into the crank pulley bolt, and rotate the crank pulley to remove the bolts (4 places) securing the torque converter to the drive plate.
      G14610587Courtesy of SUBARU OF AMERICA, INC.
    3. Attach the ST to the converter case.

      Preparation tool: 

      ST: STOPPER SET (498277200)

      G14610588Courtesy of SUBARU OF AMERICA, INC.
  34. Disconnect the fuel delivery tube and evaporation hose.
    CAUTION:
    • Be careful not to spill fuel. 
    • Catch the fuel from the tubes using a container or cloth. 
    1. Disconnect the evaporation hose (A) from the vacuum pipe assembly.
    2. Remove the clip (B) from the intake manifold assembly, and disconnect the quick connector of the fuel delivery tube (C) from the fuel pipe.
      NOTE:

      Disconnect the quick connector as shown in the figure. 

      G14610589Courtesy of SUBARU OF AMERICA, INC.
      G14610590Courtesy of SUBARU OF AMERICA, INC.
  35. Separate the engine unit and transmission.
    CAUTION:

    Before removing the engine unit away from transmission, check to be sure no work has been overlooked. 

    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)

      G14610591Courtesy of SUBARU OF AMERICA, INC.
    2. Support the engine unit with a lifting device and wire ropes.
      G14610592Courtesy of SUBARU OF AMERICA, INC.
    3. Support the transmission with a garage jack.
      CAUTION:

      Be sure to perform this procedure to prevent the transmission from lowering by its own weight. 

      G14610593Courtesy of SUBARU OF AMERICA, INC.
    4. Remove the bolts which hold the upper side of transmission to the engine unit.
      • CVT model
        G14610594Courtesy of SUBARU OF AMERICA, INC.
      • MT model
        G14610595Courtesy of SUBARU OF AMERICA, INC.
  36. Remove the engine unit from the vehicle.
    NOTE:

    Be careful not to damage adjacent parts or body panels with crank pulley, oil level gauge, etc. 

    1. With a lifting device and a garage jack, lift the engine unit together with the transmission body.
      CAUTION:

      When lifting up the engine unit, pay attention to the clearance of each part and be careful not to lift the engine too much, in order to prevent damaging the vehicle. 

      NOTE:

      Lift it high enough until the stud bolt of the engine mounting is completely drawn out of the crossmember COMPL front. 

    2. Move the engine unit horizontally until the engine unit is withdrawn from transmission body. (CVT model)
      NOTE:

      If it is hard to pull out the stud bolt from the transmission body, precisely adjust the height of the transmission body with garage jack so that no load is applied to the stud bolt. 

    3. Move the engine unit horizontally until the clutch disc is pulled out from the main shaft and the engine unit is withdrawn from transmission body. (MT model)
      NOTE:

      If it is hard to pull out the stud bolt from the transmission body, precisely adjust the height of the transmission body with garage jack so that no load is applied to the stud bolt. 

    4. Slowly move the engine unit away from engine compartment.
  37. Remove the engine mounting from the engine unit.
  38. Set the engine unit on the engine stand, etc. and remove the lifting device and wire ropes. Ref. to MECHANICAL (H4DOTC)>PREPARATION FOR OVERHAUL>PROCEDURE 
  39. Remove the ST1 and ST2 from the engine unit.
    G14610591Courtesy of SUBARU OF AMERICA, INC.
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