Monday, March 5, 2012

Procedure to replace Engine on Acura?


Engine
REMOVAL & INSTALLATION: --

The details to replace engine are as follows :----

Removal & Installation




NOTE
The engine and transaxle are removed from the vehicle as a unit.

  1. Before servicing the vehicle, refer to the Precautions section.
  2. Drain the cooling system.
  3. Drain the power steering system.
  4. Drain the transaxle fluid.
  5. Drain the engine oil.
  6. Relieve fuel system pressure.
  7. Remove or disconnect the following: Negative battery cableBattery and trayIntake and ignition coil coversAir intake ductLeft engine wire harness connectorsRelay bracketStarter cable and harness clampAccelerator cableCruise control cableFuel linesEVAP canister hose

    Negative battery cable
    Battery and tray
    Intake and ignition coil covers
    Air intake duct
    Left engine wire harness connectors
    Relay bracket
    Starter cable and harness clamp
    Accelerator cable
    Cruise control cable
    Fuel lines
    EVAP canister hose
  8. Remove the drivers side center console lower panel and pull back the cover to access steering joint cover. Steering joint boltPowertrain Control Module (PCM) connectorsHeated Oxygen (HO2S) sensor connector and grommet. Pull the PCM harness through the firewall.Brake booster vacuum linePower steering hose-s clamps and clipsFuse/Relay box battery cableAccessory drive beltsFront wheelsSplash shieldFront sub-frame stiffenerExhaust front pipePropeller shaftShift control cableTransfer assemblyBall jointsStabilizer bar linksPower steering hose and pressure switch connectorTransaxle lower front mountTransaxle lower rear mountA/C compressorHeater hosesRadiator hosesGround cableTransaxle oil cooler linesRadiator

    Steering joint bolt
    Powertrain Control Module (PCM) connectors
    Heated Oxygen (HO2S) sensor connector and grommet. Pull the PCM harness through the firewall.
    Brake booster vacuum line
    Power steering hose-s clamps and clips
    Fuse/Relay box battery cable
    Accessory drive belts
    Front wheels
    Splash shield
    Front sub-frame stiffener
    Exhaust front pipe
    Propeller shaft
    Shift control cable
    Transfer assembly
    Ball joints
    Stabilizer bar links
    Power steering hose and pressure switch connector
    Transaxle lower front mount
    Transaxle lower rear mount
    A/C compressor
    Heater hoses
    Radiator hoses
    Ground cable
    Transaxle oil cooler lines
    Radiator
  9. Attach a hoist to the engine lifting eyes and support the powertrain weight.
  10. Remove or disconnect the following: Side engine mount bracketFront mount bracket support nut

    Side engine mount bracket
    Front mount bracket support nut
  11. Matchmark the front Sub-frame to the mounting points.
  12. Remove or disconnect the following: Front subframeAll remaining hoses and electrical connections

    Front subframe
    All remaining hoses and electrical connections
  13. Lower the powertrain away from the vehicle.
To install:


image
Fig. Sub-frame fastener locations and tightening torque-MDX
  1. Raise the powertrain into position.
  2. Installation is the reverse of removal but please note the following steps: A/C compressor bolts to 16 ft. lbs. (22 Nm)Front subframe. Use new bolts and tighten the 14mm bolts to 76 ft. lbs. (103 Nm). Tighten the front brace bolts to 54 ft. lbs. (74 Nm) and the rear brace bolts to 86 ft. lbs. (117 Nm).Transaxle lower front mount nuts to 28 ft. lbs. (38 Nm)Transaxle lower rear mount bolts to 28 ft. lbs. (38 Nm)Front mount bracket support nut to 40 ft. lbs. (54 Nm)Side engine mount bracket bolts to 33 ft. lbs. (44 Nm) and the through bolt to 40 ft. lbs. (54 Nm)

    A/C compressor bolts to 16 ft. lbs. (22 Nm)
    Front subframe. Use new bolts and tighten the 14mm bolts to 76 ft. lbs. (103 Nm). Tighten the front brace bolts to 54 ft. lbs. (74 Nm) and the rear brace bolts to 86 ft. lbs. (117 Nm).
    Transaxle lower front mount nuts to 28 ft. lbs. (38 Nm)
    Transaxle lower rear mount bolts to 28 ft. lbs. (38 Nm)
    Front mount bracket support nut to 40 ft. lbs. (54 Nm)
    Side engine mount bracket bolts to 33 ft. lbs. (44 Nm) and the through bolt to 40 ft. lbs. (54 Nm)
  3. Fill the engine crankcase to the correct level.
  4. Fill the transaxle to the correct level.
  5. Fill the cooling system.
  6. Fill the power steering system.
  7. Start the engine and check for leaks.
  8. Check the wheel alignment and adjust as necessary.

NOTE
The engine and transaxle are removed from the vehicle as a unit.

  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove the two clips, pull the insulator and then remove the support struts from the hood, then move the hood to a vertical position and reinstall the support strut.
  3. Drain the cooling system.
  4. Drain the power steering system.
  5. Drain the transaxle fluid.
  6. Drain the engine oil.
  7. Relieve fuel system pressure.
  8. Remove or disconnect the following:

    Negative battery cable
    Battery and tray
    Intake and ignition coil covers
    Electrical connections and the air intake duct
    Left engine wire harness connectors
    Relay bracket
    Starter cable and harness clamp
    Shift control cable
    Accelerator cable
    Cruise control cable
    Fuel lines
    Brake booster EVAP canister hoses
  9. Remove the drivers side center console lower panel and pull back the carpet to access steering joint cover.

    Steering joint cover
    Steering joint bolt
    Powertrain Control Module (PCM) connectors
    Alternator cables
    Drive belt
    Power steering hose-s clamps and clips
    Heated Oxygen (HO 2 S) sensor connector and grommet. Pull the PCM harness through the firewall.
    Fuse/Relay box battery cable
    Front wheels
    Splash shield
    Front sub-frame stiffener
    Exhaust front pipe
    Propeller shaft
    Transfer assembly
    Stabilizer bar links
    Ball joints
    Knuckles from the lower arms
    Driveshafts
    Power steering hose and pressure switch connector
    Transaxle lower front mount
    Transaxle lower rear mount
    Rear engine mount bolts
    A/C compressor and move aside and attach with wire to keep it out of the way during engine removal
    Heater hoses
    Radiator hoses
    Ground cable
    Transaxle oil cooler lines
    Radiator
  10. Attach a hoist to the engine lifting eyes and support the powertrain weight.
  11. Remove or disconnect the following:

    Side engine mount bracket
    Front mount bracket support nut
  12. Matchmark the front subframe to the mounting points.
  13. Remove or disconnect the following:

    Front subframe
    All remaining hoses and electrical connections
  14. Lower the powertrain away from the vehicle.
To install:
Click image to see an enlarged view
Fig. Sub-frame fastener locations and tightening torque-MDX
  1. Raise the powertrain into position.
  2. Installation is the reverse of removal but please note the following steps:

    A/C compressor bolts to 16 ft. lbs. (22 Nm)
    Front subframe. Use new bolts and tighten the 14mm bolts to 76 ft. lbs. (103 Nm). Tighten the front brace bolts to 54 ft. lbs. (74 Nm) and the rear brace bolts to 86 ft. lbs. (117 Nm).
    Transaxle lower front mount nuts to 28 ft. lbs. (38 Nm)
    Transaxle lower rear mount bolts to 28 ft. lbs. (38 Nm)
    Front mount bracket support nut to 40 ft. lbs. (54 Nm)
    Side engine mount bracket bolts to 33 ft. lbs. (44 Nm) and the through bolt to 40 ft. lbs. (54 Nm)
  3. Fill the engine crankcase to the correct level.
  4. Fill the transaxle to the correct level.
  5. Fill the cooling system.
  6. Fill the power steering system.
  7. Start the engine and check for leaks.
  8. Check the wheel alignment and adjust as necessary.


This details will help.
Thanks.



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