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8HP70 Automatic Transmission (Service Information): Assembly

CAUTION:

A unique transmission fluid has been developed for this transmission. This fluid is NOT compatible with ATF+4 or any other current Chrysler transmission fluid. For specifics about this unique fluid see FLUIDS, LUBRICANTS AND GENUINE PARTS.

CAUTION:

The Transmission Control Module (TCM), or Transmission Control Module Assembly (TCMA) is extremely sensitive to Electrostatic Discharge (ESD). Always use a ground strap and follow the ESD guidelines in ELECTROSTATIC DISCHARGE SENSITIVE DEVICES. Failure to follow these instructions may result in damage to the TCM/TCMA.

NOTE: If the transmission is being reconditioned (clutch/seal replacement) or replaced, it is necessary to perform the TCM Adaptation Procedure. Refer to TRANSMISSION CONTROL MODULE (TCM) ADAPTATION .
  1. Insert the P4 annulus (3) into the P4 annulus drum (2).
  2. Install the snap ring (1) into the P4 annulus drum (2).
    GC0209118Courtesy of CHRYSLER GROUP, LLC
  3. Install the P4 planetary carrier\output shaft (2) into the P4 annulus drum (1).
    GC0209096Courtesy of CHRYSLER GROUP, LLC
  4. Position the bearings on the top and the bottom of C clutch (1).
    GC0209119Courtesy of CHRYSLER GROUP, LLC
  5. Install the C clutch (1) into the P4 sun gear/C/E clutch retainer (2).
  6. Install the needle bearing (2) onto the E clutch (1).
    GC0209120Courtesy of CHRYSLER GROUP, LLC
  7. Install the E clutch (1) into the P4 sun gear/C/E clutch retainer (3).
  8. Install the snap ring (1) into the P4 sun gear/C/E clutch retainer (2).
    GC0209121Courtesy of CHRYSLER GROUP, LLC
  9. Install the P3 annulus (1) into the P4 sun gear/C/E clutch retainer (2).
    GC0209122Courtesy of CHRYSLER GROUP, LLC
  10. Install the snap ring (1) into the P4 sun gear/C/E clutch retainer (2).
    GC0209123Courtesy of CHRYSLER GROUP, LLC
  11. Install the P4 sun gear/C/E clutch retainer (1) into the D clutch drum (2).
    GC0209126Courtesy of CHRYSLER GROUP, LLC
  12. Install the needle bearing onto the planetary carrier.
    GC0209095Courtesy of CHRYSLER GROUP, LLC
  13. Install the P3 planetary carrier (2) in the D clutch drum.
  14. Install the snap ring (1).
  15. Install the D clutch drum (1) into the P4 annulus drum (2).
    GC0209124Courtesy of CHRYSLER GROUP, LLC
  16. Install the P2 annulus\P3 sun gear (1) onto the drum assembly (2).
    GC0209128Courtesy of CHRYSLER GROUP, LLC
  17. Install the needle bearing (2) and washer.
    GC0209129Courtesy of CHRYSLER GROUP, LLC
  18. Install the input shaft with P2 planetary carrier (1) into the drum assembly.
  19. Install P1/P2 sun gear into the bottom of the P1 planetary carrier (3).
    GC0209130Courtesy of CHRYSLER GROUP, LLC
  20. Install the P1 planetary carrier (3).
  21. Install the snap ring (1).
  22. Install the needle bearing and holding plate (2) onto the P1 planetary carrier.
    GC0209132Courtesy of CHRYSLER GROUP, LLC
  23. Install the selectable shim to the P1 annulus/B clutch hub.
  24. Install the P1 annulus\B clutch hub assembly (1) onto the P4 annulus drum.
  25. Install the O-ring and five squared O-rings.
  26. Install the clutch pack (2).
    NOTE: The Installer, Output Needle Bearing/Rear Oil Dam 10373A (3) is a combination tool that is reversed to install the oil dam and output shaft inner needle bearing. For use to install the output shaft inner needle bearing, use the thick walled side (2) of the tool against the bearing.
    GC0209138Courtesy of CHRYSLER GROUP, LLC
  27. Using (special tool #10373A, Installer, Output Needle Bearing/Rear Oil Dam) (3) and (special tool #C-4171, Driver Handle, Universal) (1), install the output shaft inner needle bearing.
    GC0209092Courtesy of CHRYSLER GROUP, LLC
  28. Install the snap ring.
    NOTE: The Installer, Output Needle Bearing/Rear Oil Dam 10373A (3) is a combination tool that is reversed to install the oil dam and output shaft inner needle bearing. For use to install the oil dam, use the thin walled side (2) of the tool against the oil dam.
  29. Using (special tool #10373A, Installer, Output Needle Bearing/Rear Oil Dam) (3) and (special tool #C-4171, Driver Handle, Universal) (1), install the oil dam.
    GC0209091Courtesy of CHRYSLER GROUP, LLC
  30. Install the snap ring.
  31. Install the needle bearing (AWD) or ball bearing (RWD).
    GC0209099Courtesy of CHRYSLER GROUP, LLC
  32. Install the snap ring (1).
    NOTE: The transmission must be in a upright position when the input/output shaft and the P4 annulus drum assembly (1) is installed.
  33. Install the input/output shaft and P4 annulus drum assembly (1) into the case.
    GC0154476Courtesy of CHRYSLER GROUP, LLC
  34. From outside the transmission case, install the park pawl shaft and install the park pawl (1) and spring (2).
    GC0209133Courtesy of CHRYSLER GROUP, LLC
  35. Install the park pawl shaft plug (1) into the rear of the case and tighten to 35 N. m (26 ft. lb.).
    GC0209134Courtesy of CHRYSLER GROUP, LLC
  36. Using (special tool #6936, Spacer) (1), install the selector shaft seal (2).
    GC0209093Courtesy of CHRYSLER GROUP, LLC
  37. Install the shaft (4), spring (2), and fork (1) into the case.
    GC0209135Courtesy of CHRYSLER GROUP, LLC
  38. Install the roll pin into the selector shaft (4) using a suitable pin punch (3).
  39. Install the park pawl lock rod (1) onto the fork (2).
    GC0209136Courtesy of CHRYSLER GROUP, LLC
  40. Position the park pawl lock rod guide plate (2), install the three park pawl lock rod guide plate retaining screws (1) and tighten to 10 N. m (89 in. lb.).
    GC0209137Courtesy of CHRYSLER GROUP, LLC
  41. Install the oil pump cover lip seal (3) on the oil pump cover (2).
    GC0209090Courtesy of CHRYSLER GROUP, LLC
  42. If removed, install a new oil pump needle bearing using (special tool #10376, Installer, Input Shaft Needle Bearing) and (special tool #C-4171, Driver Handle, Universal).
    GC0154563Courtesy of CHRYSLER GROUP, LLC
  43. If removed, install the inner oil pump needle bearing using (special tool #10382, Installer, Oil Pump Housing Needle Bearing) and (special tool #C-4171, Driver Handle, Universal)
    GC0154353Courtesy of CHRYSLER GROUP, LLC
  44. Using (special tool #10375, Installer, Oil Pump Cover Oil Seal) (1), install the input shaft seal in the oil pump cover (2).
  45. Position the oil pump housing (2) and oil pump cover (3) together.
    GC0209104Courtesy of CHRYSLER GROUP, LLC
  46. Install the five bolts (1) and tighten to 5 N. m (44 in. lb.) plus 45°.
  47. Insert the piston and the retaining ring (1) into the housing.
    GC0209103Courtesy of CHRYSLER GROUP, LLC
  48. Position the oil pump housing assembly (4) in a suitable arbor press.
    GC0209105Courtesy of CHRYSLER GROUP, LLC
  49. Using (special tool #8285, Compressor, Spring) (1), press on the fingers of the piston retaining ring to remove tension, and install the two halves of the split retainer ring (2).
  50. Install the hub (3).
    GC0209106Courtesy of CHRYSLER GROUP, LLC
  51. Install the clutches and spacers (4).
  52. Install the snap ring (2).
  53. Install the outer ring (1) (below B-piston).
  54. Position the B-piston alignment tab (2) above the notch and install B-piston (1) on the assembly.
    GC0209089Courtesy of CHRYSLER GROUP, LLC
  55. Carefully position the oil pump housing assembly into the case, firmly press the oil pump into place before drawing it in with the bolts.
    NOTE: Check the transmission end play before installing the new oil pump bolts, in case adjustment is needed.
    GC0209141Courtesy of CHRYSLER GROUP, LLC
  56. Install the new  input shaft O-ring.
  57. Install the thirteen oil pump cover retaining bolts and tighten the oil pump cover as follows:
    1. In order to seat the oil pump cover properly, pre tighten bolts one, seven and nine to 6 N. m (53 in. lb.).
    2. Working in a clockwise pattern, beginning with number one, tighten to 10 N. m (89 in. lb.).
    3. Working in a clockwise pattern, beginning with number one, tighten an additional 90°.
    NOTE: The manual park release lever (2) can be reversed to release tension and ease the installation of the valve body assembly.
    GC0209110Courtesy of CHRYSLER GROUP, LLC
  58. Temporarily install the manual park release lever (2) to release tension on the shift fork as follows:
    1. Install the manual shift shaft lever (2) 180 degrees offset from its original position.
    2. Install the nut (1) and hand tighten.
    3. Turn the manual park release lever (2) and using a tie strap (3), secure the lever (2) into position so the park release fork is in the same position as it was before valve body assembly removal.
    GC0209094Courtesy of CHRYSLER GROUP, LLC
  59. Install a new compression seal (3) into the transmission case.
    GC0209112Courtesy of CHRYSLER GROUP, LLC
  60. Install the fluid port (1) with new  O-rings to the transmission case.
  61. Install the (special tool #10379, Pins, Valve Body Alignment) (1) in the transmission case as guides for the valve body assembly.
    NOTE: Make sure the shift fork lines up properly.
    GC0212885Courtesy of CHRYSLER GROUP, LLC
  62. Using the valve body alignment pins (1) to guide, position the valve body assembly to the transmission.
    NOTE: After several bolts have been hand tightened, remove the guide pins (1).
  63. Install the fourteen valve body assembly retaining bolts and hand tighten.
  64. Using (special tool #10377, Remover/Installer, Guide Sleeve) (1) carefully install the electrical harness insulator (2) into the transmission case (3).
    GC0209139Courtesy of CHRYSLER GROUP, LLC
  65. Install the sensor (4) and the sensor retaining bolt (1) and hand tighten.
    GC0209143Courtesy of CHRYSLER GROUP, LLC
  66. Latch the electrical connector insulator lock (2) by pushing in.
  67. If equipped, install the Hydraulic Impulse Storage Unit (H.I.S.).
    GC0154626Courtesy of CHRYSLER GROUP, LLC
  68. Tighten the bolts (2 and 3) to 8 N. m (71 in. lbs.).
  69. Install the valve body assembly end retainer bolts (3) and hand tighten.
  70. Tighten the valve body assembly retaining bolts 1-18 in the sequence shown in illustration to 8 N. m (71 in. lbs.).
    GC0212886Courtesy of CHRYSLER GROUP, LLC
  71. Remove the tie strap and return the manual release lever (1) to the original position.
    GC0209111Courtesy of CHRYSLER GROUP, LLC
  72. Install the nut (2) and tighten to 10 N. m (89 in. lbs.).
  73. Position the oil pan and gasket.
    GC0209113Courtesy of CHRYSLER GROUP, LLC
  74. Install the thirteen oil pan retaining bolts and using the sequence shown in illustration and tighten to 10 N. m (89 in. lbs.).
    NOTE: AWD only.
    CAUTION:

    The seal must be installed flush with the case. Driving the seal deeper could damage the seal causing a leak.

  75. Position the new output shaft seal (3) over the output shaft and against the transmission case.
    GC0209101Courtesy of CHRYSLER GROUP, LLC
  76. Using (special tool #8481, Installer, Gear) install the output shaft seal.
  77. Position the extension housing.
  78. Install the seven transmission housing extension bolts (2) and tighten to 27 N. m (20 ft. lbs.).
    NOTE: RWD only.
  79. Install the transmission output shaft washer.
    CAUTION:

    The seal must be installed flush with the case. Driving the seal deeper could damage the seal causing a leak.

    GC0209140Courtesy of CHRYSLER GROUP, LLC
  80. Position the new output shaft seal (3) over the output shaft and against the transmission case.
  81. Using (special tool #8481, Installer, Gear) install the output shaft seal.
  82. Install the transmission rear dust seal (2).
  83. Install the driveshaft flange (1).
  84. Install the new  driveshaft flange nut and washer using a 34 mm 12 point socket (3) and (special tool #C-3281, Holder, Flange) (2) to hold the flange (1). Tighten to 60 N. m (44 Ft. lbs.).
    GC0209145Courtesy of CHRYSLER GROUP, LLC
  85. Stake the nut.
  86. Install the torque converter (1). Refer to TORQUE CONVERTER, INSTALLATION .
    GC0209144Courtesy of CHRYSLER GROUP, LLC
  87. Before installing the transmission in the vehicle, pre-fill the transmission as outlined in FILL TRANSMISSION AFTER SERVICE. Refer to STANDARD PROCEDURE - TRANSMISSION FILL AFTER SERVICE .
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