Contents Section: Mechanical All sections

Engine Mechanical (H4SO): Adjustments Subaru Impreza GD/GC/GG рестайлинг 2

Mechanical 25 illustrations ~1716 words

ADJUSTMENT

CAUTIONAdjustment of valve clearance should be performed while engine is cold.

Scheme 48

Scheme 48
  1. Set #1 cylinder piston to top dead center of compression stroke by rotating the crank pulley clockwise using the socket wrench. NOTE: When the arrow mark (A) on cam sprocket (LH) comes exactly to the top, #1 cylinder piston is brought to the top dead center of compression stroke. see scheme 19: Identifying Arrow Mark On Cam Sprocket
  2. Adjust the #1 cylinder valve clearance. Loosen the valve rocker nut and screw. Place a suitable thickness gauge. While noting the valve clearance, tighten the valve rocker adjusting screw. When the specified valve clearance is obtained, tighten the valve rocker nut. Tightening torque: 9.75 N.m (1.0 kgf-m, 7.2 ft-lb) CAUTION: Insert the thickness gauge in as horizontally as possible with respect to the valve stem end face. Adjust the exhaust valve clearances while lifting-up the vehicle. Valve clearance Intake: 0.20±0.04 mm (0.0079±0.0016 in) Exhaust: 0.25±0.04 mm (0.0098±0.0016 in) see scheme 20: Adjusting Exhaust Valve Clearances
  3. Adjust the valve clearance in #3, #2 and #4 cylinder in the same adjustment procedure as #1 cylinder. NOTE: Be sure to set the cylinder pistons to their respective top dead centers on compression stroke before adjusting valve clearances. By rotating the crank pulley clockwise every 180° from the state that #1 cylinder piston is on the top dead center of compression stroke, #3, #2 and #4 cylinder pistons come to the top dead center of compression stroke in this order.
  4. Ensure the valve clearances of each cylinder are within specifications. If necessary, readjust the valve clearances.

Scheme 49

Scheme 49: REMOVAL

Scheme 50

Scheme 50

Scheme 51

Scheme 51

Scheme 52

Scheme 52

Scheme 53

Scheme 53

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Scheme 54

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Scheme 57

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Scheme 59

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Scheme 68

Scheme 69

Scheme 69
  1. Set the vehicle on a lift.
  2. Open the front hood fully and support with the front food stay.
  3. Collect the refrigerant from A/C system. < Ref. to «PROCEDURE»(ref-273760-S06391620722007121100000), Refrigerant Recovery Procedure. >
  4. Release the fuel pressure. < Ref. to «RELEASING OF FUEL PRESSURE»(ref-273750-S35216098032007121100000), PROCEDURE, Fuel. >
  5. Disconnect the ground cable from battery.
  6. Open the fuel filler flap lid and remove the fuel filler cap.
  7. Remove the air intake duct, air cleaner case and air intake chamber. < Ref. to «REMOVAL»(ref-273751-S08844703072007121100000), Air Intake Duct. > < Ref. to «REMOVAL»(ref-273751-S42539503392007121100000), Air Cleaner Case. > < Ref. to «REMOVAL»(ref-273751-S33614174222007121100000), Air Intake Chamber. >
  8. Remove the under cover.
  9. Remove the radiator from vehicle. < Ref. to «REMOVAL»(ref-273761-S42306038892007121100000), Radiator. >
  10. Disconnect the A/C pressure hoses from A/C compressor.
  11. Remove the air intake chamber stay. see scheme 21: Identifying Air Intake Chamber Stay
  12. Disconnect the following connectors and cables. Front oxygen (A/F) sensor connector Rear oxygen sensor connector see scheme 22: Identifying Front Oxygen (A/F) Sensor Connector And Rear Oxygen Sensor Connector Engine ground cable see scheme 23: Identifying Engine Ground Cable Engine harness connectors see scheme 24: Identifying Engine Harness Connectors Generator connector and terminal see scheme 25: Identifying Generator Connector And Terminal A/C compressor connectors see scheme 26: Locating A/C Compressor Connectors Power steering switch connector see scheme 27: Locating Power Steering Switch Connector
  13. Disconnect the following hoses. Brake booster vacuum hose see scheme 28: Locating Brake Booster Vacuum Hose Heater inlet and outlet hoses
  14. Remove the power steering pump from bracket. Loosen the lock bolt and slider bolt, and then remove the front side V-belt. < Ref. to «FRONT SIDE BELT»(ref-273755-S35923515452007121100000), REMOVAL, V-belt. > Remove the pipe with bracket. see scheme 29: Locating Heater Inlet And Outlet Hoses Bracket With Bolts Remove the bolts which install the power steering pump to bracket. see scheme 30: Locating Power Steering Pump Bracket Bolts Remove the power steering tank from bracket by pulling it upward. see scheme 31: Locating Power Steering Tank Bracket Move the power steering pump to the right side wheel apron to prevent it from falling. NOTE: Use a shop cloth not to scratch. see scheme 32: Identifying Power Steering Pump
  15. Remove the front and center exhaust pipe. < Ref. to «REMOVAL»(ref-273757-S36870461802007121100000), Front Exhaust Pipe. >
  16. Remove the nuts which hold lower side of transmission to engine. see scheme 33: Locating Lower Side Of Transmission To Engine Nuts Location
  17. Remove the nuts which install front cushion rubber onto front crossmember. see scheme 34: Locating Front Cushion Rubber Onto Front Crossmember Nuts
  18. Remove the housing cover mounting bolts.
  19. Separate the torque converter clutch from drive plate. (AT model) Lower the vehicle. Remove the service hole plug. Remove the bolts which hold torque converter clutch to drive plate. Remove all the bolts by rotating them in the direction of engine rotation little by little using a socket wrench. see scheme 35: Removing Housing Cover Mounting Bolts Using Socket Wrench
  20. Remove the pitching stopper. see scheme 36: Identifying Pitching Stopper
  21. Disconnect the fuel delivery hose (A) and evaporation hose (B). < Ref. to «REMOVAL»(ref-273750-S06081484122007121100000), Fuel Delivery & Evaporation Lines. > CAUTION: Catch fuel from the hose into container. Disconnect the hose with its end wrapped with cloth to prevent fuel from splashing. ST 42099AE000 CONNECTOR REMOVER see scheme 37: Disconnecting Fuel Delivery Hose (A) And Evaporation Hose Using Connector Remover
  22. Support the engine with a lifting device and wire ropes. see scheme 38: Supporting Engine With Lifting Device And Wire Ropes
  23. Support the transmission with a garage jack. CAUTION: Doing this is very important because the transmission lowers for its own weight. This work is also of great importance for facilitating reinstallation. see scheme 39: Supporting Transmission With Garage Jack CAUTION: Before removing the engine away from transmission, check to be sure no work has been overlooked.
  24. Separation of engine and transmission. Remove the starter. < Ref. to «REMOVAL»(ref-273752-S28619755232007121100000), Starter. > Remove the bolts which hold upper side of transmission to engine. see scheme 40: Locating Upper Side Of Transmission Bolts Location
  25. Set the ST to converter case. (AT model) ST 498277200 STOPPER SET see scheme 41: Setting ST To Converter Using Stopper Set Case ST 498277200 (At Model)
  26. Remove the engine from vehicle. Slightly raise the engine. Raise the transmission with garage jack. Move the engine horizontally until main shaft is withdrawn from clutch cover. Slowly move the engine away from engine compartment. NOTE: Be careful not to damage adjacent parts or body panels with crank pulley, oil level gauge, etc.
  27. Remove the front cushion rubbers.

Scheme 70

Scheme 70

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Scheme 71

Scheme 72

Scheme 72
  1. Install the front cushion rubbers. Tightening torque: 35 N.m (3.6 kgf-m, 25.8 ft-lb)
  2. 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. see scheme 42: Supporting Engine With Lifting Device And Wire Ropes
  3. Apply a small amount of grease to splines of main shaft. (MT model)
  4. Tighten the bolts which hold upper side of transmission to engine. Tightening torque: 50 N.m (5.1 kgf-m, 36.9 ft-lb) see scheme 43: Locating Upper Side Of Transmission To Engine Bolts Location
  5. Remove the lifting device and wire ropes.
  6. Remove the garage jack.
  7. Install the pitching stopper. Tightening torque: T1: 50 N.m (5.1 kgf-m, 36.9 ft-lb) T2: 58 N.m (5.9 kgf-m, 42.8 ft-lb) (Scheme 48): Identifying Pitching Stopper
  8. Remove the ST from converter case. (AT model) NOTE: Be careful not to drop the ST into the converter case when removing the ST. ST 498277200 STOPPER SET
  9. Install the starter. < Ref. to «INSTALLATION»(ref-273752-S26905137102007121100000), Starter. >
  10. Install the torque converter clutch to drive plate. (AT model) Tighten the bolts which hold torque converter clutch to drive plate. Tighten all the bolts by rotating them in the direction of engine rotation little by little using a socket wrench. CAUTION: Be careful not to drop bolts into the torque converter clutch housing. Tightening torque: 25 N.m (2.5 kgf-m, 18.4 ft-lb) (Scheme 49): Removing Housing Cover Mounting Bolts Using Socket Wrench Clog the service hole plug and prevent foreign matters from being mixed.
  11. Install the power steering pump on bracket. Install the power steering tank to bracket. (Scheme 50): Locating Power Steering Tank Bracket Install the power steering pump on bracket, and tighten the bolts. Tightening torque: 22 N.m (2.2 kgf-m, 16 ft-lb) (Scheme 51): Locating Power Steering Pump Bracket Bolts Install the pipe with their bracket. (Scheme 52): Locating Heater Inlet And Outlet Hoses Bracket With Bolts Connect the power steering switch connector. (Scheme 53): Locating Power Steering Switch Connector Install the front side belt and adjust it. < Ref. to «FRONT SIDE BELT»(ref-273755-S35923515452007121100000), INSTALLATION, V-belt. >
  12. Lift-up the vehicle.
  13. Tighten the nuts which hold lower side of transmission to engine. Tightening torque: 50 N.m (5.1 kgf-m, 36.9 ft-lb) (Scheme 54): Locating Lower Side Of Transmission To Engine Nuts Location
  14. Tighten the nuts which install the front cushion rubber onto crossmember. Tightening torque: 85 N.m (8.7 kgf-m, 63 ft-lb) NOTE: Make sure the front cushion rubber mounting bolts (A) and locator (B) are securely installed. (Scheme 55): Locating Front Cushion Rubber Mounting Bolts And Locator
  15. Install the front and center exhaust pipe. < Ref. to «INSTALLATION»(ref-273757-S20270156582007121100000), Front Exhaust Pipe. >
  16. Lower the vehicle.
  17. Connect the following hoses: Fuel delivery hose and evaporation hose Heater inlet and outlet hoses Brake booster vacuum hose
  18. Connect the following connectors: Front oxygen (A/F) sensor connector Rear oxygen sensor connector Engine ground cable Tightening torque: 14 N.m (1.4 kgf-m, 10.1 ft-lb) Engine harness connectors Generator connector and terminal A/C compressor connector
  19. Install the air intake chamber stay. Tightening torque: 16 N.m (1.6 kgf-m, 11.6 ft-lb)
  20. Tighten the engine ground cable. Tightening torque: 14 N.m (1.4 kgf-m, 10.1 ft-lb)
  21. Install the A/C pressure hoses. < Ref. to «INSTALLATION»(ref-273760-S16671568192007121100000), Hose and Tube. >
  22. Install the radiator to vehicle. < Ref. to «INSTALLATION»(ref-273761-S19871372572007121100000), Radiator. >
  23. Install the air intake duct, air cleaner case and air intake chamber. < Ref. to «INSTALLATION»(ref-273751-S20340857702007121100000), Air Intake Duct. > < Ref. to «INSTALLATION»(ref-273751-S21669962992007121100000), Air Cleaner Case. > < Ref. to «INSTALLATION»(ref-273751-S17601065322007121100000), Air Intake Chamber. >
  24. Install the under cover.
  25. Install the battery in the vehicle, and connect cables.
  26. Fill engine coolant. < Ref. to «FILLING OF ENGINE COOLANT»(ref-273761-S38223783052007121100000), REPLACEMENT, Engine Coolant. >
  27. Check the ATF level and replenish it if necessary. < Ref. to «INSPECTION»(ref-273762-S41062545392007121100000), Automatic Transmission Fluid. >
  28. Charge the A/C system with refrigerant. < Ref. to «PROCEDURE»(ref-273760-S23381968512007121100000), Refrigerant Charging Procedure. >
  29. Remove the front hood stay, and close the front hood.
  30. Take off the vehicle from a lift.