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Home >> Jeep >> 2014 >> Grand Cherokee SRT >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> 8HP70 Automatic Transmission (Service Information) >> Installation >> 3.0L Diesel

3.0L Diesel

CAUTION:

The transmission and torque converter must be removed as an assembly to avoid component damage. The converter drive plate, oil pump, or oil seal can be damaged if the converter is left attached to the drive plate during removal. Be sure to remove the transmission and converter as an assembly.

NOTE:

If the transmission is being reconditioned (clutch/seal replacement) or replaced, it is necessary to perform the TCM Adaptation Procedure using the scan tool.

Refer to MODULE, TRANSMISSION CONTROL, STANDARD PROCEDURE .

  1. If a replacement transmission is being installed, transfer any components necessary, such as the manual shift lever and shift cable bracket, Mechanical Park Release bracket from the original transmission onto the replacement transmission.
  2. Install the torque converter. Refer to TORQUE CONVERTER, INSTALLATION .
    Fig 1: Supporting Transmission With Jack
    GC0158384Courtesy of CHRYSLER GROUP, LLC
  3. Place the transmission on a jack and secure with chains or similar.
  4. Apply a light coating of Mopar® High Temp Grease to the torque converter hub pocket in the rear pocket of the engine's crankshaft.
    Fig 2: Identifying Transmission
    GC0082966Courtesy of CHRYSLER GROUP, LLC
  5. Raise transmission and align the torque converter with the drive plate and the transmission converter housing with the engine block.
    NOTE:

    If the torque converter was spun or removed, align torque converter bolts holes with the starter pocket to ease bolt installation.

  6. Move transmission forward. Then raise, lower, or tilt transmission to align the converter housing with the engine block dowels.
    NOTE:

    It may be necessary to support the rear of the engine during transmission installation.

  7. Carefully work transmission (2) forward and over engine block dowels until converter hub is seated in crankshaft. Verify that no wires, or the transmission vent hose, have become trapped between the engine block and the transmission.
    Fig 3: Lower Transmission Bolts
    GC0138699Courtesy of CHRYSLER GROUP, LLC
  8. Install two bolts (1) to attach the transmission to the engine.
    Fig 4: Removing/Installing Transmission To Engine Bolts
    GC0118998Courtesy of CHRYSLER GROUP, LLC
  9. Install remaining torque converter housing to engine bolts (3 and 4). Tighten all torque converter housing bolts to 55 N.m (41 ft. lbs.).
    Fig 5: Torque Converter Bolt
    GC0144169Courtesy of CHRYSLER GROUP, LLC
  10. Rotate the crankshaft in a clockwise direction to line up the alignment hole (1) in the flex plate, then start the first bolt.
    Fig 6: Torque Converter Bolt
    GC0144169Courtesy of CHRYSLER GROUP, LLC
  11. Rotate the crankshaft in a clockwise direction until the converter bolts (1) are accessible.
    Fig 7: Torque Converter Bolts
    GC0138700Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    3.6L engine shown in illustration, diesel engine similar.

  12. Install torque converter bolts (1) and torque to 42 N.m (31 ft. lbs.).
    NOTE:

    Install all torque converter bolts (1) by hand first. There are 3 sets of two bolts 120° apart.

    NOTE:

    The torque convertor bolts are installed through the starter pocket.

    Fig 8: NVH Cover On Crankshaft Damper
    GC0158420Courtesy of CHRYSLER GROUP, LLC
  13. Install the NVH cover over the crankshaft damper. Tighten the bolts to 9 N.m (80 in. lbs.).
    Fig 9: Cooler Line Clip
    GC0158324Courtesy of CHRYSLER GROUP, LLC
  14. Connect left front transmission line clip (1).
  15. Connect the transmission vent hose.
    Fig 10: Locking Covers
    GC0158317Courtesy of CHRYSLER GROUP, LLC
  16. Connect the transmission cooler lines. Be sure that the lines are fully seated.
  17. Snap the Jiffy Tite lock (1) over the line fitting.
    Fig 11: Locking Tab, MPR Cable & Bracket
    GC0158322Courtesy of CHRYSLER GROUP, LLC
  18. Install the MPR cable (2) into the bracket (3) and lock into place.
    Fig 12: Differential Pressure Sensor Bracket & Bolts
    GC0158428Courtesy of CHRYSLER GROUP, LLC
  19. Install the differential pressure sensor bracket (1) onto the right side of the torque converter housing and torque to 10 N.m (89 in. lbs.).
    Fig 13: Exhaust Bracket & Bolts
    GC0158418Courtesy of CHRYSLER GROUP, LLC
  20. Install the exhaust to transmission case bracket. Tighten the nuts to 25 N.m (18 ft. lbs.).
    Fig 14: Removing/Installing Wiring Connector Plug
    GC0081175Courtesy of CHRYSLER GROUP, LLC
  21. Check O-ring on plug connector (1), and replace if necessary.
  22. Install the plug connector (1) into the adapter plug (2). Turn bayonet lock of the adapter plug (2) clockwise to connect plug connector (1).
    Fig 15: 13-Pin Connector Bracket & Bolts
    GC0158423Courtesy of CHRYSLER GROUP, LLC
  23. Install the 13-way connector bracket to the transmission case and catalytic converter. Tighten bolts to 25 N.m (18 ft. lbs.).
  24. Install the transfer case.

    For MP2010, refer to INSTALLATION . For MP3010, refer to INSTALLATION . For MP3023, refer to INSTALLATION .

  25. Install the starter.

    Refer to STARTER, INSTALLATION .

  26. If 4WD, install the front propeller shaft heat shield.
  27. If 4WD, install the front propeller shaft.

    Refer to SHAFT, DRIVE, FRONT, INSTALLATION .

    Fig 16: Crossmember Bolts & Nuts
    GC0158349Courtesy of CHRYSLER GROUP, LLC
  28. Install the crossmember and tighten bolts (1 and 3) to 68 N.m (50 ft. lbs.)
  29. Install the transmission mount nuts (2) and torque to 47 N.m (35 ft. lbs.)
  30. Install the rear propeller shaft.

    Refer to SHAFT, DRIVE, REAR, INSTALLATION .

    Fig 17: Mechanical Park Release Cable, Lever & Zip Tie
    GC0158366Courtesy of CHRYSLER GROUP, LLC
  31. Remove the zip tie (3) from the MPR lever.
  32. Connect the MPR cable (1) to the MPR lever (2).
  33. Install heat shield for rear propeller shaft/muffler.
  34. Install the Selective Range Catalyst (SRC).

    Refer to CATALYST, SELECTIVE CATALYTIC REDUCTION (SCR), INSTALLATION .

  35. If equipped install skid plates and close out panels.
  36. Fill the transmission with appropriate fluid.

    Refer to FLUID AND FILTER, STANDARD PROCEDURE .

  37. Lower the vehicle.
  38. Connect the battery negative cable.
  39. Verify normal operation of the transmission.
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