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Home >> Jeep >> 2018 >> Grand Cherokee Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (6.4L Engine (Service Information)) >> Engine Block >> Crankshaft >> Installation

Engine Block: Crankshaft: Installation

WARNING: This page is about a different variant/trim than selected.
CAUTION:

If the engine encounters a catastrophic failure, the engine oil cooler and lines must be replaced or damage to the new engine or components could result.

GC0088074Courtesy of CHRYSLER GROUP, LLC
  1. Select the proper main bearings (1). Refer to BEARING(S), CRANKSHAFT, MAIN  .
  2. Lubricate the main bearing shells with clean engine oil.
  3. Install the main bearings into the engine block.
    GC0088075Courtesy of CHRYSLER GROUP, LLC
  4. Install the main bearing shells (2) into the bearing caps (1).
    GC0088076Courtesy of CHRYSLER GROUP, LLC
  5. Position the crankshaft (1) into the engine block.
    GC0095610Courtesy of CHRYSLER GROUP, LLC
  6. Lubricate and install the thrust bearings (1).
    GC0092128Courtesy of CHRYSLER GROUP, LLC
  7. Install all main bearing caps (1) in the location as noted during removal making sure the arrow (2) faces forward.
    Fig 1: Main Bearing Caps Tightening Sequence
    GC0092133Courtesy of CHRYSLER GROUP, LLC
  8. Clean and oil all main cap bolts and install finger tight.
  9. Using the sequence shown, tighten the main bearing cap bolts to 13 N.m (10 ft. lbs.).
  10. Again, using the sequence shown, tighten the main bearing cap bolts to 28 N.m (21 ft. lbs.).
  11. Using the sequence shown, rotate the main bearing cap bolts an additional 90°.
    Fig 2: Main Bearing Cap Crossbolts - Torque Sequence
    GC0088079Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    The main bearing cap crossbolts are torqued after the final torque of the main cap bolts. Always use a new seal washers on crossbolts.

  12. Install the crossbolts with new seal washers finger tight.
  13. Using the sequence shown, tighten the crossbolts to 31 N.m (23 ft. lbs.).
  14. Again, using the sequence shown, repeat the crossbolt tightening procedure.
  15. Measure the crankshaft end play. Refer to CRANKSHAFT  .
    CAUTION:

    The connecting rod bolts must not be reused. Always replace the connecting rod bolts whenever they are loosened or removed.

    GC0081782Courtesy of CHRYSLER GROUP, LLC
  16. Wipe the connecting rod caps clean and install the rod bearings.
  17. Lubricate the bearing surfaces with clean engine oil and install the bearings and connecting rod caps onto the connecting rod journals in the same location as noted during removal.
  18. Lubricate the new connecting rod bolts with clean engine oil and install the bolts finger tight.
  19. Tighten the connecting rod bolts to the proper specifications. Refer to TORQUE SPECIFICATIONS  .
    GC0108284Courtesy of CHRYSLER GROUP, LLC
  20. If required, measure the connecting rod side clearance (1, 2). Refer to CONNECTING RODS  .
    GC0088059Courtesy of CHRYSLER GROUP, LLC
  21. Install the timing chain (5), camshaft phaser (1) and crankshaft sprocket (3). Refer to CHAIN AND SPROCKETS, TIMING, INSTALLATION .
    Fig 3: Oil Pump Loosening/Tightening Sequence
    GC0088115Courtesy of CHRYSLER GROUP, LLC
  22. Position the oil pump on the crankshaft and install the oil pump retaining bolts finger tight.
  23. Using the sequence shown, tighten the oil pump retaining bolts to 28 N.m (21 ft. lbs.).
    GC0144610Courtesy of CHRYSLER GROUP, LLC
  24. Install the engine timing cover (1). Refer to INSTALLATION .
    GC0081773Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    The crankshaft rear oil seal is integral to the crankshaft rear oil seal retainer and must be replaced as an assembly.

    NOTE:

    The crankshaft rear oil seal retainer can not be reused after removal.

  25. Thoroughly clean all gasket residue from the engine block.
  26. Position the gasket onto the new crankshaft rear oil seal retainer.
  27. Position the crankshaft rear oil seal retainer onto the engine block.
  28. Using the sequence shown, install the crankshaft rear oil seal retainer mounting bolts and tighten to 15 N.m (11 ft. lbs.).
    GC0144561Courtesy of CHRYSLER GROUP, LLC
  29. Install the oil pump pickup tube (2) and oil pan. Refer to INSTALLATION  .
    GC0104711Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    To prevent severe damage to the crankshaft Damper Installer, thoroughly clean the damper bore and the crankshaft nose before installing damper.

  30. Position the damper on the crankshaft.
    CAUTION:

    The Damper Installer is assembled in a specific sequence. Failure to assemble this tool in this sequence may result in tool failure and severe damage to either the tool or the crankshaft.

  31. Assemble the Damper Installer (special tool #10387, Installer, Vibration Damper) (2) as follows:
    1. Install the nut onto the threaded shaft.
    2. Install the roller bearing onto the threaded shaft making sure the hardened bearing surface is facing the nut.
    3. Install the pressing cup (2) from the A/C Hub Installer (special tool #6871, Installer, A/C Hub) onto the threaded shaft.
    4. Coat the threaded shaft with MOPAR® Nickel Anti-Seize or equivalent.
    GC0132223Courtesy of CHRYSLER GROUP, LLC
  32. Using the Damper Installer (special tool #10387, Installer, Vibration Damper) (3) and the pressing cup (2) from A/C Hub Installer (special tool #6871, Installer, A/C Hub), press the crankshaft damper (1) onto the crankshaft.
  33. Install the crankshaft damper bolt and tighten to 176 N.m (129 ft. lbs.).
    GC0095614Courtesy of CHRYSLER GROUP, LLC
  34. Install the flexplate (1). Refer to FLEXPLATE, INSTALLATION .
  35. Install the engine. Refer to INSTALLATION .
  36. Start the engine and check for leaks.
NOTE:

The Cam/Crank Variation Relearn procedure must be performed using the scan tool anytime there has been a repair/replacement made to a powertrain system, for example: flywheel, valvetrain, camshaft and/or crankshaft sensors or components.