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Home >> Jeep >> 2022 >> Compass Trailhawk >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 2.4L Engine (Service Information) >> Engine Block >> Rod, Piston And Connecting >> Removal And Installation >> Installation
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Removal And Installation: Installation

GC0095425Courtesy of CHRYSLER GROUP, LLC
  1. If required, select and fit new piston and connecting rod assemblies to the engine block. Refer to ROD, PISTON AND CONNECTING, STANDARD PROCEDURE .
  2. If required, select and fit new bearings to the connecting rod. Refer to BEARING(S), CONNECTING ROD, STANDARD PROCEDURE .
  3. If required, hone the cylinder bores. Refer to ENGINE BLOCK, STANDARD PROCEDURE .
  4. If removed, install the piston rings. Refer to RING(S), PISTON, REMOVAL AND INSTALLATION .
  5. Position the piston ring end gaps as follows:
    • Oil ring expander gap (5)
    • Oil ring lower side rail end gap (4)
    • Oil ring upper side rail end gap (1)
    • No. 2 (intermediate) ring end gap (5)
    • No. 1 (upper) ring end gap (2)
    GC0152767Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Typical I4 engine configuration shown in illustration.

    NOTE:

    Ensure the position of the ring end gaps does not change when installing the ring compressor.

  6. Lubricate the piston rings with clean engine oil. Position a piston ring compressor (2) over the piston and rings. Tighten the compressor (2).
    NOTE:

    Install the rod bearings in pairs. Do not mix sizes or use a new bearing half with an old bearing half.

  7. Install the bearing shell (7) on the connecting rod with the tang inserted into the machined groove in the rod. Lubricate the bearing surface with clean engine oil.
  8. Install the special tool (#10281, Pins, Connecting Rod Guide) (6) on the connecting rod.
    CAUTION:

    Care must be taken not to nick crankshaft journals, as engine damage may occur.

    GC0169235Courtesy of CHRYSLER GROUP, LLC
  9. The pistons crowns are stamped with an arrow (1). The piston and connecting rod assemblies must be installed so the arrow points toward the front of the engine.
  10. Wipe the cylinder bore clean and lubricate with clean engine oil.
  11. Rotate the crankshaft until the connecting rod journal is on the center of cylinder bore.
    CAUTION:

    Avoid contact with the piston oil cooler jet(s). Positioning of the oil cooler jet(s) is critical for proper engine operation.

  12. Insert the piston and connecting rod into the cylinder bore and carefully position the guide pins over the crankshaft journal.
  13. Tap the piston down in the cylinder bore using a hammer handle while guiding the connecting rod into position over the rod journal.
    GC0152767Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Typical I4 engine configuration shown in illustration.

    CAUTION:

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

  14. Install the bearing shell (5) on the connecting rod cap (3) with the tang inserted into the machined groove in the cap. Lubricate the bearing surface with clean engine oil.
    NOTE:

    Do not lubricate the threads of the connecting rod cap bolts (4).

  15. Install the connecting rod cap and bearing with the tang on the same side as the rod. Tighten the NEW  connecting rod cap bolts (4) to the proper torque specification. Refer to TORQUE SPECIFICATIONS  .
  16. If required, check the connecting rod side clearance. Refer to ROD, PISTON AND CONNECTING, STANDARD PROCEDURE .
  17. Repeat the previous steps for each piston being installed.
    GC0104468Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    The main bearing cap bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts must be replaced.

  18. Check the main bearing cap bolts for necking by holding a scale or straight edge against the threads. If all the threads do not contact the scale (2) the bolt must be replaced.
    GC0169583Courtesy of CHRYSLER GROUP, LLC
  19. Remove the temporarily installed cap bolts from main bearing caps 2, 3 and 5. Install the bearing beam (1) with its longer bolts so that the <FRT indication (2) is pointing to the front of the engine.
    GC0162220Courtesy of CHRYSLER GROUP, LLC
  20. Tighten the ten main bearing cap bolts in the sequence shown in illustration, following this 3 step torque plus angle method. Tighten according to the following torque values:
    • Step 1: All to 15 N.m (11 ft. lbs.)
    • Step 2: All to 45 N.m (33 ft. lbs.)
    • Step 3: All an additional 45° Turn Do not use a torque wrench for this step. 
  21. Install the ladder frame, balance shaft/oil pump assembly and oil pan. Refer to FRAME, LADDER, REMOVAL AND INSTALLATION .
  22. Install the cylinder head and engine timing cover. Refer to CYLINDER HEAD, REMOVAL AND INSTALLATION .
  23. Install a new rear crankshaft oil seal. Refer to SEAL, CRANKSHAFT OIL, REAR, REMOVAL AND INSTALLATION .
  24. Install the transmission to the engine and install the engine in the vehicle. Refer to REMOVAL AND INSTALLATION .
  25. If removed, install the oil filter and fill the engine crankcase with the proper oil to the correct level. Refer to OIL, STANDARD PROCEDURE .
  26. Fill the transmission. Refer to STANDARD PROCEDURES .
  27. Fill the cooling system. Refer to STANDARD PROCEDURE .
  28. Connect the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), connect the IBS connector to the negative battery cable.
  29. Evacuate and charge the refrigerant system. Refer to PLUMBING, STANDARD PROCEDURE .
  30. Start engine and check for leaks.
  31. Run the engine until it reaches normal operating temperature. Check cooling system for correct fluid level. Refer to STANDARD PROCEDURE .
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