AutoZone 2011 Honda Truck Element EX 2WD 2.4L MFI DOHC 4cyl | Repair Guides | Engine Mechanical | Engine Mechanical Components | Balance Shaft | AutoZone.com

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    2011 Honda Truck Element EX 2WD 2.4L MFI DOHC 4cyl

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    Breeze, Cirrus, Sebring Convertible and Sedan, Stratus Sedan, 1999-2005

    Balance Shaft

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    Removal & Installation



    2.4L Engines

    The 2.4L engine uses eccentric weighted shafts that rotate in the opposite direction of the crankshaft to counteract noise and vibration. The shafts are installed in the engine block and must be timed in a manner similar to timing the crankshaft to the timing belt.

    1. Before servicing the vehicle, refer to the Precautions section.
    2.  
    3. Disconnect battery negative cable from remote negative terminal on shock tower and properly isolate to prevent accidental reconnection.
    4.  
    5. Drain engine oil and remove oil pan.
    6.  
    7. Remove or disconnect the following:
      NOTE
      Using two wide pry bars, work the sprocket back and forth until it is off the shaft.



      Balance shaft chain cover, guide and tensioner
       
      Balance shaft gear cover retaining stud (double ended to also retain chain guide)
       
      Balance shaft gear cover and gears
       
      Balance shaft gear and chain sprocket retaining screws and crankshaft chain sprocket
       
      Chain and sprocket assembly
       



      Carrier gear cover and balance shafts
       

    8.  
    9. Remove four carrier to crankcase attaching bolts to separate carrier from engine bedplate.
    10.  

    1. Before servicing the vehicle, refer to the Precautions section.
    2.  
    3. Drain the engine oil.
    4.  
    5. Remove or disconnect the following:

      Oil pan and discard the gasket
       
      Chain cover, guide and tensioner
       
      Gear cover and balance shaft gears
       
      Balance shaft gear and crankshaft chain sprocket
       
      Carrier gear cover and balance shafts
       

    6.  

    Balance Shaft Carrier

    The gear cover, gears, balance shafts and the rear cover will remain intact during carrier removal.

    1. Remove chain cover and driven balance shaft chain sprocket screw.
    2.  
    3. Loosen tensioner pivot and adjusting screws, move driven balance shaft inboard through driven chain sprocket. Sprocket will hang in lower chain loop.
    4.  
    5. Remove carrier to crankcase attaching bolts to remove carrier.

      Click image to see an enlarged view

      Fig. Balance shaft timing chain, tensioner and cover-2.4L engine



      Click image to see an enlarged view

      Fig. Balance shaft drive chain and sprockets-2.4L engine



      Click image to see an enlarged view

      Fig. Balance shaft timing gear and covers-2.4L engine



      Click image to see an enlarged view

      Fig. Balance shaft removal and installation-2.4L engine



      Click image to see an enlarged view

      Fig. Balance shaft timing-2.4L engine



      Click image to see an enlarged view

      Fig. Crank sprocket installation-2.4L engine



      Click image to see an enlarged view

      Fig. Timing chain orientation-2.4L engine



      Click image to see an enlarged view

      Fig. Timing chain tensioning-2.4L engine

    6.  

    To install:

    Balance shaft and carrier assembly installation is the reverse of the removal procedure. During installation crankshaft to balance shaft timing must be established.

    Balance Shaft Timing
    1. With balance shafts installed in carrier, position carrier on crankcase and install four attaching bolts and torque to 40 ft. lbs. (54 Nm)
    2.  
    3. Turn balance shafts until both shaft key ways are parallel to vertical centerline of engine.
    4.  
    5. Install short hub drive gear on sprocket driven shaft and long hub gear on gear driven shaft.
      1. After installation gear and balance shaft keyways must be up with gear timing marks meshed as shown.
      2.  

    6.  
    7. Install gear cover and tighten double ended stud/washer fastener to 105 inch lbs. (12 Nm)
    8.  
    9. Install crankshaft sprocket using Special Tool 6052 or a suitable gear press.
    10.  
    11. Turn crankshaft until number one cylinder is at Top Dead Center (TDC). The timing marks on the chain sprocket should line up with the parting line on the left side of number one main bearing cap.
    12.  
    13. Place chain over crankshaft sprocket so that the nickel plated link of the chain is over the number 1 cylinder timing mark on the crankshaft sprocket.
    14.  
    15. Place balance shaft sprocket into the timing chain so that the timing mark on the sprocket (yellow dot) mates with the lower nickel-plated link on the chain.
    16.  
    17. With balance shaft keyways pointing up (12 o'clock position), slide the balance shaft sprocket onto the nose of the balance shaft.
      1. The balance shaft may have to be pushed in slightly to allow for clearance.
        WARNING
        When the balance shafts are timed correctly, the timing mark on the sprocket, lower nickel-plated link and the arrow on the side of the gear cover should line up.

      2.  

    18.  
    19. If the sprockets are timed correctly install the balance shaft bolts and tighten to 250 inch lbs. (28 Nm)
      NOTE
      A wood block placed between crankcase and crankshaft counterbalance will prevent crankshaft and gear rotation.

    20.  

    Balance Shaft Timing And Installation

    NOTE
    During installation of the balance shafts to crankshaft, the proper timing procedure must be followed to prevent internal engine damage.

    1. Install or connect the following:


    2.  
    3. Install the balance shafts and carrier on the crankshaft. Torque the bolts to 40 ft. lbs. (54 Nm).
    4.  
    5. Turn the balance shafts until both key ways are pointing up. Install the short hub drive gear on the sprocket driven shaft.
    6.  
    7. Make certain that the key ways and the gear timing marks are properly aligned.

      Click image to see an enlarged view

      Fig. Align the key ways and the gear timing marks

    8.  
    9. Install the gear cover and torque the double ended stud and washer to 105 inch lbs. (12 Nm)
    10.  
    11. Align the flat of the balance shaft drive sprocket to the flat on the crankshaft
    12.  
    13. Install the balance shaft drive sprocket to the crankshaft with special tool 6052.
    14.  
    15. Turn the crankshaft until the No. 1 cylinder is at Top Dead Center (TDC).
    16.  
    17. Make certain that the timing marks on the chain sprocket are aligned with the parting line on the left side main bearing cap.
    18.  
    19. Install the chain over the crankshaft and be sure the plated link is over the No. 1 cylinder timing mark on the balance shaft crankshaft sprocket.
    20.  
    21. Place the balance shaft sprocket into the timing chain and align the sprocket dot to the lower plate link on the chain.
    22.  
    23. Slide the balance shaft sprocket on the nose of the balance shaft with the key ways pointing at the 12 o-clock position.
    24.  
    25. When properly timed, install the balance shaft bolts and torque to 21 ft. lbs. (28 Nm)
    26.  
    27. To tighten the chain use the following procedure:
      1. Loosely Install the chain tensioner.
      2.  
      3. Position the guide on the double ended stud and make certain that the tab on the guide fits into the slot on the gear cover.

        Click image to see an enlarged view

        Fig. Properly adjust the chain tension

      4.  
      5. Install and tighten the nut/washer assembly to 105 inch lbs. (12 Nm).
      6.  
      7. Place a 1mm thick by 70mm long shim between the tensioner and chain.
      8.  
      9. With a load applied, torque the top tensioner bolt to 105 inch lbs. (12 Nm).
      10.  
      11. Torque the bottom pivot bolt to 105 inch lbs. (12 Nm).
      12.  
      13. Remove the shim.


      14.  

    28.  
    29. Install the carrier covers and torque the bolts to 105 inch lbs. (12 Nm).
    30.  
    31. Install the oil pan.
    32.  
    33. Fill the engine with clean oil.
    34.  
    35. Start the vehicle, check for leaks and repair if necessary.
    36.  

    Chain Tensioning
    1. Install chain tensioner loosely assembled.
    2.  
    3. Position guide on double ended stud making sure tab on the guide fits into slot on the gear cover.
    4.  
    5. Install and tighten nut/washer assembly to 105 inch lbs. (12 Nm)
    6.  
    7. Place a 0.039-inch (1mm) thick by 2.750-inch (70mm) shim between the tensioner and chain. Push tensioner and shim up against the chain.
    8.  
    9. Apply firm hand pressure directly behind the adjustment slot to take up all slack. Chain must have shoe radius contact as shown.
    10.  
    11. With the load applied, tighten bolts to 105 inch lbs. (12 Nm) and remove the shim.
      NOTE
      Tighten the top bolt first, then the bottom pivot bolt.

    12.  
    13. Install carrier covers and tighten screws to 105 inch lbs. (12 Nm)
    14.  
    15. Install oil pan and fill engine crankcase with proper oil to correct level
    16.  

     
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