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8HP70 Automatic Transmission (Service Information): Installation

CAUTION:

The transmission and torque converter must be removed as an assembly to avoid component damage. The converter driveplate, oil pump, or oil seal can be damaged if the converter is left attached to the driveplate 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 TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .

  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. Apply a light coating of Mopar® High Temp Grease to the torque converter hub pocket in the rear pocket of the engine's crankshaft.
  3. Install the torque converter. Refer to TORQUE CONVERTER, INSTALLATION .
    GC0158384Courtesy of CHRYSLER GROUP, LLC
  4. Place a suitable jack under the transmission and secure with chains or similar.
    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.
  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.
    GC0138699Courtesy of CHRYSLER GROUP, LLC
  8. Install two transmission to engine bolts (1).
    GC0118998Courtesy of CHRYSLER GROUP, LLC
  9. Install the remaining transmission to engine bolts (3 and 4). Tighten all the transmission to engine bolt to the proper torque specification. Refer to TECHNICAL SPECIFICATIONS .
    GC0158383Courtesy of CHRYSLER GROUP, LLC
  10. Install torque converter bolts (1) and tighten to the proper torque specification. Refer to TECHNICAL SPECIFICATIONS .
    NOTE:

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

    GC0158324Courtesy of CHRYSLER GROUP, LLC
  11. Connect left front transmission line clip (1).
  12. Connect the transmission vent hose.
    GC0158317Courtesy of CHRYSLER GROUP, LLC
  13. Connect the transmission lines. Be sure that the lines are fully seated.
  14. Snap the Jiffy Tite lock (1) over the line fitting.
    GC0158322Courtesy of CHRYSLER GROUP, LLC
  15. Install the MPR cable (2) into the bracket (3) and lock into place.
    GC0158335Courtesy of CHRYSLER GROUP, LLC
  16. Install the wiring harness bracket (1) onto the right side of the torque converter housing and tighten to the proper torque specification. Refer to TECHNICAL SPECIFICATIONS .
    GC0081175Courtesy of CHRYSLER GROUP, LLC
  17. Check O-ring on plug connector (1), and replace if necessary.
  18. Install the transmission wire harness connector (1) into the adapter plug (2). Turn bayonet lock of the adapter plug (2) clockwise to connect the transmission wire harness connector (1).
  19. Install the transfer case. Refer to REMOVAL AND INSTALLATION .
    GC0158334Courtesy of CHRYSLER GROUP, LLC
  20. Install the engine structural cover and tighten to the proper torque specification. Refer to TECHNICAL SPECIFICATIONS .
    NOTE:

    The left front structural cover bolt (2) must be installed with the cover.

  21. Finally torque the structural cover bolts tighten to the proper torque specification. Refer to TECHNICAL SPECIFICATIONS .
  22. Install the starter. Refer to STARTER, INSTALLATION .
  23. Install the left and right catalytic converters. Refer to CONVERTER, CATALYTIC, INSTALLATION .
    GC0158349Courtesy of CHRYSLER GROUP, LLC
  24. Install the cross-member, cross-member bolts (1 and 3) and tighten to the proper torque specification. Refer to TECHNICAL SPECIFICATIONS .
  25. Install the transmission mount nuts (2) and tighten to the proper torque specification. Refer to TECHNICAL SPECIFICATIONS .
  26. Install the rear drive shaft. Refer to SHAFT, DRIVE, REAR, INSTALLATION .
    GC0158366Courtesy of CHRYSLER GROUP, LLC
  27. Remove the zip tie (3) from the MPR lever.
  28. Connect the MPR cable (1) to the MPR lever (2).
  29. Install heat shield for rear propeller shaft/muffler.
  30. Install the rear section of exhaust. Refer to MUFFLER, EXHAUST, INSTALLATION .
  31. If equipped install skid plates.
  32. Fill the transmission with appropriate fluid. Refer to STANDARD PROCEDURE .
  33. Remove the support and lower the vehicle.
  34. Connect the battery negative cable.
  35. If the valve body is replaced, program the Transmission Control Module (TCM). Refer to MODULE, TRANSMISSION CONTROL (TCM), MODULE PROGRAMMING .
  36. Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
CAUTION:

The transmission and torque converter must be removed as an assembly to avoid component damage. The converter driveplate, oil pump, or oil seal can be damaged if the converter is left attached to the driveplate 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 TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .

  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 .
    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.
    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.
    GC0138699Courtesy of CHRYSLER GROUP, LLC
  8. Install two bolts (1) to attach the transmission to the engine.
    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.).
    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.
    GC0144169Courtesy of CHRYSLER GROUP, LLC
  11. Rotate the crankshaft in a clockwise direction until the converter bolts (1) are accessible.
    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.

    GC0158420Courtesy of CHRYSLER GROUP, LLC
  13. Install the NVH cover over the crankshaft damper. Tighten the bolts to 9 N.m (80 in. lbs.).
    GC0158324Courtesy of CHRYSLER GROUP, LLC
  14. Connect left front transmission line clip (1).
  15. Connect the transmission vent hose.
    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.
    GC0158322Courtesy of CHRYSLER GROUP, LLC
  18. Install the Manual Park Release (MPR) cable (2) into the bracket (3) and lock into place.
    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.).
    GC0158418Courtesy of CHRYSLER GROUP, LLC
  20. Install the exhaust to transmission case bracket. Tighten the nuts to 25 N.m (18 ft. lbs.).
    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).
    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. 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, REAR, INSTALLATION .
    GC0158349Courtesy of CHRYSLER GROUP, LLC
  28. Install the cross-member 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 .
    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 Reduction 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 STANDARD PROCEDURE .
  37. Lower the vehicle.
  38. Connect the battery negative cable.
  39. If the valve body is replaced, program the Transmission Control Module (TCM). Refer to MODULE, TRANSMISSION CONTROL (TCM), MODULE PROGRAMMING .
  40. Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
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