Hyundai Coupes/Sedans 1994-1998 Repair Guide

Balance Shafts and Bearings

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REMOVAL & INSTALLATION



See Figures 1 through 13

2.0L (VIN P) and 1994-95 1.8L (VIN M) Engines

You'll need a number of special tools to perform this operation. They are listed as follows:



Bearing puller 09212-32000-to remove right balance shaft front bearing.
 
Bearing puller 09212-32100 and holding fixture 09212-32300-to remove left balance shaft rear bearing.
 
Bearing installer 09212-32200-to install left and right balance shaft rear bearings.
 
Seal installer 90214-32100-to install the crankshaft front seal
 



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Fig. Fig. 1: Balance shafts and related components-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 2: Removing the plug cap from the oil pump portion of the front case-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 3: Removing the plug from the left side of the cylinder block and inserting an 0.31 in. (8 mm) bar to hold the balance shaft-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 4: Removing the oil pump driven gear and left balance shaft retaining bolt-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 5: Removing the front case-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 6: Removing the oil pump cover-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 7: Removing the right balance shaft bearing-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 8: Removing the left balance shaft bearing-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 9: Installing the left balance shaft rear bearing-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 10: Installing the right balance shaft front bearing-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 11: Balance shaft bearing oil hole alignment-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 12: Oil pump gear alignment marks-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines



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Fig. Fig. 13: Installing the oil seal guide tool-2.0L (VIN P) and 1994-95 1.8L (VIN M) engines

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the oil filter, oil pressure switch, oil gauge sending unit, oil filter mounting bracket and gasket.
  4.  
  5. Raise and safely support the vehicle.
  6.  
  7. Drain engine oil.
  8.  
  9. Remove engine oil pan and screen.
  10.  
  11. Remove the timing belts.
  12.  
  13. Remove the crankshaft sprocket "B" and balance shaft sprocket.
  14.  
  15. Remove the front engine cover which is also the oil pump cover. Different length bolts are used. Take note of their locations. Discard the shaft seal and gasket.
  16.  
  17. Remove the oil pump driven gear flange bolt. When loosening this bolt, first remove the plug at the bottom of the left side of the cylinder block and insert a tool approximately 3/8 in. diameter into the hole. The tool will hold the balance shaft in position. The tool must be inserted at least 2.4 in. into the hole. If depth of insertion is not correct, rotate the oil pump sprocket 1 revolution, and align the timing marks. Insert the tool again, and watch the amount of insertion, which should be at least 2.4 in.
  18.  
  19. Remove the oil pump gears and remove the front case assembly. Remove the threaded plug, the oil pressure relief spring and plunger.
  20.  
  21. Remove the shaft alignment tool, front cover and oil pump as a unit, with the left balance shaft attached.
  22.  
  23. Remove the oil pump gear and left balance shaft.
  24.  

To aid in removal of the front cover, a driver groove is provided on the cover, above the oil pump housing. Avoid prying on the thinner parts of the housing flange or hammering on it to remove the case.

  1. Remove the right balance shaft from the engine block.
  2.  
  3. Replace the balance shaft bearings as follows:
    1. Using special bearing puller tool (PN 09212-32000) or equivalent, remove the right balance shaft bearing from the cylinder block.
    2.  
    3. Using special bearing puller tool (PN 09212-32100) and holding fixture (PN 09212-32300) to hold the puller or equivalents, remove the left balance shaft rear bearing from the cylinder block.
    4.  
    5. Coat the inner surfaces of the new bearings and the block bores with clean engine oil.
    6.  
    7. Install the left rear balance shaft bearing into the cylinder block bore and install it using special bearing installer tool (PN 09212-32200) and the special holding fixture (PN 09212-32300) used before to remove the bearing. The fixture serves as a guide for the bearing installer tool.
    8.  
    9. Using special bearing installer tool (PN 09212-32200) or equivalent, install the right balance shaft front bearing into the block.
    10.  

  4.  

To install:
  1. Install a new front seal in the cover. Install the oil pump drive and driven gears in the front case, aligning the timing marks on the pump gears.
  2.  
  3. Install the left balance shaft in the driven gear and temporarily tighten the bolt.
  4.  
  5. Install the right balance shaft into the cylinder block.
  6.  
  7. Install an oil seal guide on the end of the crankshaft and install a new gasket on the front of the engine block for the front cover.
  8.  
  9. Install a new front case packing.
  10.  
  11. Insert the left balance shaft into the engine block and at the same time, guide the front cover into place on the front of the engine block.
  12.  
  13. Install an O-ring on the oil pump cover and install it on the front cover.
  14.  
  15. Tighten the oil pump cover bolts and the front cover bolts to 11-13 ft. lbs. (15-18 Nm).
  16.  
  17. Install the upper and lower under covers.
  18.  
  19. Install the spacer on the end of the right balance shaft, with the chamfered edge toward the rear of the engine.
  20.  
  21. Install the balance shaft sprocket and temporarily tighten the bolt.
  22.  
  23. Install the inner crankshaft sprocket and align the timing marks on the sprockets with those on the front case.
  24.  
  25. Install the inner tensioner "B" with the center of the pulley on the left side of the mounting bolt and with the pulley flange toward the front of the engine.
  26.  
  27. Lift the tensioner by hand, clockwise, to apply tension to the belt. Tighten the bolt to secure the tensioner.
  28.  
  29. Check that all alignment marks are in their proper places and the belt deflection is approximately 1/4-1/2 in. on the tension side.
  30.  

When the tensioner bolt is tightened, make sure the shaft of the tensioner does not turn with the bolt. If the belt is too tight there will be noise and if the belt is too loose, the belt and sprocket may come out of mesh.

  1. Tighten the balance shaft sprocket bolt to 22-29 ft. lbs. (29-40 Nm).
  2.  
  3. Install the flange and crankshaft sprocket. Tighten the bolt to 43-50 ft. lbs. (58-67 Nm).
  4.  
  5. Install the camshaft spacer and sprocket. Tighten the bolt to 44-57 ft. lbs. (61-75 Nm).
  6.  
  7. Align the camshaft sprocket timing mark with the timing mark on the upper inner cover.
  8.  
  9. Install the oil pump sprocket, tightening the nut to 25-28 ft. lbs. (34-39 Nm). Align the timing mark on the sprocket with the mark on the case.
  10.  

To be assured that the phasing of the oil pump sprocket and the left balance shaft is correct, a metal rod should be inserted in the plugged hole on the left side of the cylinder block. If it can be inserted more than 2.4 in., the phasing is correct. If the tool can only be inserted approximately 1.0 in., turn the oil pump sprocket through 1 turn and realign the timing marks. Keep the metal rod inserted until the installation of the timing belt is completed. Remove the tool from the hole and install the plug, before starting the engine.

  1. Install the tensioner spring and tensioner. Temporarily tighten the nut. Install the front end of the tensioner spring (bent at right angles) on the projection of the tensioner and the other end (straight) on the water pump body.
  2.  
  3. If the timing belt is correctly tensioned, there should be about 0.47 in. (12 mm) clearance between the outside of the belt and the edge of the belt cover. This is measured about halfway down the side of the belt opposite the tensioner.
  4.  
  5. Complete the assembly by installing the oil screen, gasket and oil pan.
  6.  
  7. Install the crankshaft pulley, alternator and accessory belts and adjust to specifications.
  8.  
  9. Install the radiator, fill the cooling system with antifreeze and the crankcase with clean engine oil.
  10.  
  11. Connect the negative battery cable.
  12.  
  13. Start the engine and allow it to reach operating temperature. Check for leaks.
  14.  

 
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