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UNIT REPAIR

Cylinder Head and Valve Train Components

Tools Required

MKM-571-B Gauge
KM-340-0 Cutter Set
KM-340-7 Guide Drift
KM-340-13 Cutters
KM-340-26 Cutters
KM-348 Valve Spring Compressor
KM-653 Adapter
KM-805 Valve Guide Reamer

J6B11C11
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Disassembly Procedure

  1. Remove the cylinder head with the intake manifold and the exhaust manifold attached. Refer to "Cylinder Head and Gasket" in this section.
  2. Remove the exhaust manifold heat shield bolts.
  3. Remove the exhaust manifold heat shield.
  4. Remove the exhaust manifold retaining nuts in the sequence shown.
  5. Remove the exhaust manifold.
  6. Remove the exhaust manifold gasket.
  7. Remove the exhaust manifold studs.
  8. Remove the thermostat housing mounting bolts.
  9. Remove the thermostat housing assembly. Refer to Section 1D, Engine Cooling.
  10. Remove the fuel rail assembly. Refer to Section 1F, Engine Controls.

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  11. Remove the intake manifold retaining nuts and retaining bolt in the sequence shown.
  12. Remove the intake manifold.
  13. Remove the intake manifold gasket.
  14. Remove the EGR. Refer to Section 1F, Engine Controls.
  15. Remove the intake manifold studs.
  16. Remove the spark plugs.

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  17. Remove the camshaft bearing cap bolts gradually and in the sequence shown for each camshaft cap.

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  18. Remove the intake camshaft caps. Maintain the correct positions for installation.
  19. Remove the intake camshaft.
  20. Remove the intake valve tappet adjusters.
  21. Remove the exhaust camshaft caps. Maintain the correct positions for installation.
  22. Remove the exhaust camshaft.
  23. Remove the exhaust valve tappet adjusters.

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  24. Compress the valve springs with the valve spring compressor KM-348 and the adapter KM-653.
  25. Remove the valve retainers.
  26. Remove the valve spring compressor KM-348 and the adapter KM-653.
  27. Remove the valve spring caps.
  28. Remove the valve springs. Maintain the original position of the valve springs for installation.

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  29. Remove the valves. Maintain the original position of the valves for installation.
  30. Remove the valve stem seals.

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Cylinder Head Inspection

  1. Clean the sealing surfaces.
  2. Inspect the cylinder head gasket and mating surfaces for leaks, corrosion, and blowby.
  3. Inspect the cylinder head for cracks.
  4. Inspect the length and the width of the cylinder head using a feeler gauge and a straight edge.
  5. Check the sealing surfaces for deformation and warpage. The cylinder head sealing surfaces must be flat within 0.025 mm (0.001 inch) maximum.

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  6. Measure the height of the cylinder head from sealing surface to sealing surface. The cylinder head height should be 135.90 to 135.96 mm (5.350 to 5.353 inches). If the cylinder head height is less than 135.63 mm (5.340 inches), replace the cylinder head.
  7. Inspect all threaded holes for damage.
  8. Inspect valve seats for excessive wear and burned spots.

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Crankshaft

Tools Required

KM-412 Engine Overhaul Stand
KM-470-B Angular Torque Gauge
J-36792 or KM-635 Crankshaft Rear Oil Seal Installer

Notice : Take extreme care to prevent any scratches, nicks, or damage to the camshafts.

Disassembly Procedure

  1. Remove the engine. Refer to "Engine" in this section.
  2. Remove the flywheel or flexible plate bolts.
  3. Remove the flywheel or the flexible plate.

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  4. Remove the crankshaft rear oil seal.
  5. Mount the engine assembly on the engine overhaul stand KM-412.
  6. Remove the cylinder head. Refer to "Cylinder Head and Gasket" in this section.

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  7. Rotate the engine on the engine overhaul stand KM-412.

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  8. Remove the oil pan retaining bolts.
  9. Remove the oil pan.
  10. Remove the oil suction pipe bolts.
  11. Remove the oil suction pipe.

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  12. Remove the oil pump retaining bolts.
  13. Remove the oil pump.

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  14. Mark the order of the connecting rod bearing caps.
  15. Remove the connecting rod bearing cap bolts for all of the pistons.
  16. Remove the connecting rod bearing caps and the lower connecting rod bearings.
  17. Remove the upper connecting rod bearings.

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  18. Mark the order of the crankshaft bearing caps.
  19. Remove the crankshaft bearing cap bolts.
  20. Remove the crankshaft bearing caps and the lower crankshaft bearings.
  21. Remove the crankshaft.
  22. Remove the upper crankshaft bearings.
  23. Clean the parts, as needed.

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Assembly Procedure

  1. Coat the crankshaft bearings with the engine oil.
  2. Install the upper crankshaft bearings in the engine block.

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  3. Install the crankshaft.
  4. Install the lower crankshaft bearings in the bearing caps.
  5. Inspect the crankshaft end play with the crankshaft bearings installed.
  6. Check for permissible crankshaft end play. Refer to "Engine Specifications" in this section.

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  7. With the crankshaft mounted on the front and the rear crankshaft bearings, check the middle crankshaft journal for permissible out-of-round (runout). Refer to "Engine Specifications" in this section.

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    Important : Grease the crankshaft journals and lubri-cate the crankshaft bearings slightly so that the plastic gauging thread does not tear when the crankshaft bearing caps are removed.

  8. Inspect all of the crankshaft bearing clearances using a commercially available plastic gauging (ductile plastic threads).
  9. Cut the plastic gauging threads to the length of the bearing width. Lay them axially between the crankshaft journals and the crankshaft bearings.
  10. Install the crankshaft bearing caps and the bolts.

    11. Tighten
    Tighten the crankshaft bearing cap bolts to 50 N•m (37 lb-ft) plus 45 degrees plus 15 degrees.


    J3B11CN4
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  11. Remove the crankshaft bearing cap bolts and the caps.
  12. Measure the width of the flattened plastic thread of the plastic gauging using a ruler. (Plastic gauging is available for different tolerance ranges.)
  13. Inspect the bearing clearance for permissible tolerance ranges. Refer to "Engine Specifications" in this section.

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  14. Apply a bead of adhesive sealing compound to the grooves of the crankshaft bearing caps.
  15. Install the crankshaft bearing caps to the engine block.
  16. Tighten the crankshaft bearing caps using new bolts.

    17. Tighten
    Tighten the crankshaft bearing cap bolts to 50 N•m (37 lb-ft) using a torque wrench. Use the angular torque gauge KM-470-B to tighten the crankshaft bearings 45 degrees plus 15 degrees.


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    Important : Grease the connecting rod journals and lubricate the connecting rod bearings slightly so that the plastic gauging thread does not tear when the connecting rod bearing caps are removed.

  17. Inspect all of the connecting rod bearing clearances using a commercially available plastic gauging (ductile plastic threads).
  18. Cut the plastic gauging threads to the length of the connecting rod bearing width. Lay them axially between the connecting rod journals and the connecting rod bearings.
  19. Install the connecting rod bearing caps.

    20. Tighten
    Tighten the connecting rod bearing cap bolts to 25 N•m (18 lb-ft) using a torque wrench. Use the angular torque gauge KM-470-B to tighten the connecting rod bearing cap bolts 30 degrees plus 15 degrees.


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  20. Remove the connecting rod bearing caps.
  21. Measure the width of the flattened plastic thread of the plastic gauging using a ruler. (Plastic gauging is available for different tolerance ranges.)
  22. Inspect the bearing clearance for permissible tolerance ranges. Refer to "Engine Specifications" in this section.

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  23. Install the connecting rod bearing caps to the connecting rods.
  24. Tighten the connecting rod bearing caps using new bolts.

    25. Tighten
    Tighten the connecting rod bearing cap bolts to 25 N•m (18 lb-ft) using a torque wrench. Use the angular torque gauge KM-470-B to tighten the connecting rod cap bolts 30 degrees plus 15 degrees.


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  25. Install the oil pump.
  26. Install the oil pump retaining bolts.

    27. Tighten
    Tighten the oil pump retaining bolts to 10 N•m (89 lb-in).


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  27. Install the oil suction pipe.
  28. Install the oil suction pipe bolts.

    29. Tighten
    Tighten the oil suction pipe bolts to 10 N•m (89 lb-in).


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  29. Coat the new oil pan gasket with sealant.
  30. Install the oil pan gasket to the oil pan.
  31. Install the oil pan.
  32. Install the oil pan retaining bolts.

    33. Tighten
    Tighten the oil pan retaining bolts to 10 N•m (89 lb-in).


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  33. Rotate the engine on the engine overhaul stand KM-412.
  34. Install the cylinder head. Refer to "Cylinder Head and Gasket" in this section.

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  35. Install the engine lifting device.
  36. Remove the engine from the engine overhaul stand KM-412.

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  37. Install a new crankshaft rear oil seal using the installer J-36792 or KM-635.

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  38. Install the flywheel or the flexible plate.
  39. Install the flywheel or the flexible plate bolts.

    40. Tighten
    Tighten the flywheel bolts to 35 N•m (25 lb-ft). Use the angular torque gauge KM-470-B to tighten the flywheel bolts another 30 degrees plus 15 degrees. If the vehicle is equipped with an automatic transaxle, tighten the flexible plate bolts to 45 N•m (33 lb-ft).

  40. Install the engine. Refer to "Engine" in this section.

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Crankshaft Bearings and Connecting Rod Bearings - Gauging Plastic

Tools Required

KM-470-B Angular Torque Gauge

Inspection Procedure - Crankshaft

  1. Coat the crankshaft bearings with engine oil.
  2. Install the upper crankshaft bearings into the engine block crankshaft journals.
  3. Install the lower crankshaft bearings into the crankshaft bearing caps.
  4. Install the crankshaft.
  5. Inspect the crankshaft end play with the crankshaft bearings installed.
  6. Check for permissible crankshaft end play. Refer to "Engine Specifications" in this section.

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  7. With the crankshaft mounted on the front and rear crankshaft bearings, check the middle crankshaft journal for permissible out-of-round (runout). Refer to "Engine Specifications" in this section.

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    Notice : Grease the crankshaft journals and lubricate the crankshaft bearings slightly so that the plastic gauging thread does not tear when the crankshaft bearing caps are removed.

  8. Inspect all of the crankshaft bearing clearances using a commercially available plastic gauging (ductile plastic threads).
  9. Cut the plastic gauging threads to the length of the bearing width. Lay them axially between the crankshaft journals and the crankshaft bearings.

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  10. Install the crankshaft bearing caps.
  11. Install the crankshaft bearing cap bolts.

    12. Tighten
    Tighten the crankshaft bearing cap bolts to 50 N•m (37 lb-ft). Using the angular torque gauge KM-470-B, tighten the crankshaft bearing cap bolts 45 degrees plus 15 degrees.


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  12. Remove the crankshaft bearing caps.
  13. Measure the width of the flattened plastic thread of the plastic gauging using a ruler. (Plastic gauging is available for different tolerance ranges.)
  14. Inspect the bearing clearances for permissible tolerance ranges. Refer to "Engine Specifications" in this section.

J3B11CN3
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Inspection Procedure - Connecting Rods

  1. Coat the connecting rod bearings with engine oil.
  2. Install the upper connecting rod bearings into the connecting rod journals.
  3. Install the lower connecting rod bearings into the connecting rod bearing caps.

    4. Notice : Grease the connecting rod journals and lubricate the connecting rod bearings slightly so that the plastic gauging thread does not tear when the connecting rod bearing caps are removed.

  4. Inspect all of the connecting rod bearing clearances using a commercially available plastic gauging (ductile plastic threads).

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  5. Cut the plastic gauging threads to the length of the bearing width. Lay them axially between the connecting rod journals and the connecting rod bearings.
  6. Install the connecting rod bearing caps.
  7. Install the connecting rod bearing cap bolts.

    8. Tighten
    Tighten the connecting rod bearing cap bolts to 25 N•m (18 lb-ft). Using the angular torque gauge KM-470-B, tighten the connecting rod bearing cap bolts another 30 degrees plus 15 degrees.


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  8. Remove the connecting rod bearing caps.
  9. Measure the width of the flattened plastic thread of the plastic gauging using a ruler. (Plastic gauging is available for different tolerance ranges.)
  10. Inspect the bearing clearance for permissible tolerance ranges. Refer to "Engine Specifications" in this section.


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