Cherokee, Grand Cherokee, 1999-2005

Transmission Removal & Installation

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  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Drain the transmission fluid.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Exhaust front pipe
     
    Transmission braces, if equipped
     
    Transmission oil cooler lines
     
    Starter motor
     
    Crankshaft Position (CKP) sensor
     
    Torque converter access cover
     
    Transmission oil pan
     
    Skid plate
     
    Transmission oil dipstick tube
     
    Propeller shafts after matchmarking them
     
    Park/Neutral switch connector
     
    Shift cable
     
    Throttle valve cable
     
    Shift rod from the transfer case shift lever
     
    Crossmember
     
    Transfer case vent hose
     
    Transfer case
     

  6.  
  7. Slide the transmission/torque converter assembly rearward off the engine dowels
  8.  
  9. Lower and remove the transmission assembly
  10.  

To install:

  1. Install or connect the following:

    Transmission. Torque the flange bolts to 55 ft. lbs. (75 Nm).
     
    Front driveshaft and transfer case, if equipped
     
    Transfer case vent hose
     
    Transmission mount and crossmember
     
    Throttle valve cable
     
    Shift cable
     
    Park/Neutral switch connector
     
    Propeller shafts using the matchmarks made during removal
     
    Transmission oil dipstick tube
     
    Skid plate
     
    Transmission oil pan
     
    Torque converter access cover
     
    CKP sensor
     
    Starter motor
     
    Transmission oil cooler lines
     
    Transmission braces, if equipped. Torque the bolts to 30 ft. lbs. (41 Nm).
     
    Exhaust front pipe
     
    Negative battery cable
     

  2.  
  3. Fill the transmission with the proper fluid.
  4.  
  5. Start the vehicle, check for leaks and repair if necessary.
  6.  

30rh Hydraulic Automatic Transmission




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

  1. Disconnect battery negative cable.
  2.  
  3. Disconnect and lower or remove necessary exhaust components.
  4.  
  5. Remove engine-to-transmission bending braces.
  6.  
  7. Disconnect fluid cooler lines at transmission.
  8.  
  9. Remove starter motor.
  10.  
  11. Disconnect and remove crankshaft position sensor. Retain sensor attaching bolts.
    CAUTION
    The crankshaft position sensor can be damaged during transmission removal (or installation) if the sensor is still bolted to the engine block. To avoid damage, remove the sensor before removing the transmission

  12.  
  13. Remove torque converter access cover.
  14.  
  15. If transmission is being removed for overhaul, remove transmission oil pan, drain fluid and reinstall pan.
  16.  
  17. Remove skid plate for access, if necessary.
  18.  
  19. Remove fill tube bracket bolts and pull tube out of transmission. Retain fill tube seal. On 4 x 4 models, it will also be necessary to remove bolt attaching transfer case vent tube to converter housing.
  20.  
  21. Mark torque converter and drive plate for assembly alignment. Note that bolt holes in crankshaft flange, drive plate and torque converter all have one offset hole.
  22.  
  23. Rotate crankshaft in clockwise direction until converter bolts are accessible. Then remove bolts one at a time. Rotate crankshaft with socket wrench on dampener bolt.
  24.  
  25. Mark propeller shaft and axle yokes for assembly alignment. Then disconnect and remove propeller shaft. On 4 x 4 models, remove both propeller shafts.
  26.  
  27. Disconnect wires from park/neutral position switch and vehicle speed sensor.
  28.  
  29. Disconnect gearshift cable from transmission manual valve lever.
  30.  
  31. Disconnect throttle valve cable from transmission bracket and throttle valve lever.
  32.  
  33. On 4 x 4 models, disconnect shift rod from transfer case shift lever or remove shift lever from transfer case.
  34.  
  35. Support rear of engine with safety stand or jack.
  36.  
  37. Raise transmission slightly with service jack to relieve load on crossmember and supports.
  38.  
  39. Remove bolts securing rear support and cushion to transmission and crossmember.
  40.  
  41. Raise transmission slightly, slide exhaust hanger arm from bracket and remove rear support.
  42.  
  43. Remove bolts attaching crossmember to frame and remove crossmember.
  44.  
  45. Disconnect transfer case vent hose. Then disconnect vacuum switch harness.
  46.  
  47. On 4 x 4 models, remove transfer case.
  48.  
  49. Remove all converter housing bolts.
  50.  
  51. Carefully work transmission and torque converter assembly rearward off engine block dowels.
  52.  
  53. Hold torque converter in place during transmission removal.
  54.  
  55. Lower transmission and remove assembly from under the vehicle.
  56.  
  57. To remove torque converter, carefully slide torque converter out of the transmission.
  58.  

To install:

  1. Check torque converter hub and hub drive notches for sharp edges burrs, scratches, or nicks. Polish the hub and notches with 320/400 grit paper and crocus cloth if necessary. The hub must be smooth to avoid damaging pump seal at installation.
  2.  
  3. Lubricate converter drive hub and oil pump seal lip with transmission fluid.
  4.  
  5. Lubricate converter pilot hub with transmission fluid.
  6.  
  7. Align converter and oil pump.
  8.  
  9. Carefully insert converter in oil pump. Then rotate converter back and forth until fully seated in pump gears.
  10.  
  11. Check converter seating with steel scale and straightedge Surface of converter lugs should be 1 / 2 in. to rear of straightedge when converter is fully seated.
  12.  
  13. Temporarily secure converter with C-clamp.
  14.  
  15. Position transmission on jack and secure it with safety chains.
  16.  
  17. Check condition of converter drive plate. Replace the plate if cracked, distorted or damaged. Also be sure transmission dowel pins are seated in engine block and protrude far enough to hold transmission in alignment.
  18.  
  19. Raise transmission and align converter with drive plate and converter housing with engine block.
  20.  
  21. Move transmission forward. Then raise, lower or tilt transmission to align converter housing with engine block dowels.
  22.  
  23. Rotate converter so alignment marks scribed on converter are aligned with mark on drive plate.
  24.  
  25. Carefully work transmission forward and over engine block dowels until converter hub is seated in crankshaft.
  26.  
  27. Install and tighten bolts that attach transmission converter housing to engine block
    CAUTION
    Be sure the converter housing is fully seated on the engine block dowels before tightening any bolts.

  28.  
  29. Install torque converter attaching bolts. Tighten bolts to following torque.

    40 ft. lbs. (54 Nm) with 9.5 in. 3-lug converter
     
    55 ft. lbs. (74 Nm) with 9.5 in. 4-lug converter
     
    55 ft. lbs. (74 Nm) with 10.0 in. 4-lug converter
     
    270 in. lbs. (31 Nm) with 10.75 in. 4-lug converter
     

  30.  
  31. Install crankshaft position sensor.
  32.  
  33. Install transmission fill tube and seal. Install new fill tube seal in transmission before installation.
  34.  
  35. Connect transmission cooler lines to transmission.
  36.  
  37. Install transfer case onto transmission.
  38.  
  39. Install rear crossmember and attach transmission rear support to crossmember.
  40.  
  41. Remove engine support fixture.
  42.  
  43. Remove transmission jack.
  44.  
  45. Connect vehicle speed sensor wires.
  46.  
  47. Connect wires to park/neutral position switch.
  48.  
  49. Install crankshaft position sensor.
  50.  
  51. Install converter housing access cover.
  52.  
  53. Install exhaust pipes and support brackets, if removed.
  54.  
  55. Install starter motor and cooler line bracket.
  56.  
  57. Install new plastic retainer grommet on any shift linkage rod or lever that was disconnected. Grommets should not be reused. Use pry tool to remove rod from grommet and cut away old grommet. Use pliers to snap new grommet into lever and to snap rod into grommet at assembly.
  58.  
  59. Connect gearshift and linkage and throttle cable.
  60.  
  61. Connect transfer case shift linkage.
  62.  
  63. Adjust gearshift linkage and throttle valve cable if necessary.
  64.  
  65. Align and connect propeller shaft(s)
  66.  
  67. Install skid plate, rear cushion and bracket, if removed.
  68.  
  69. Fill transfer case to bottom edge of fill plug hole.
  70.  
  71. Lower vehicle and fill transmission to correct level with Mopar®ATF Plus 3, type 7176 fluid.
  72.  

42RE Transmission



The overdrive unit can be removed and serviced separately. It is not necessary to remove the entire transmission assembly to perform overdrive unit repairs. If only the overdrive unit requires service, refer to the overdrive unit removal and installation procedures.


CAUTION
The transmission and torque converter must be removed as an assembly to avoid component damage. The converter drive plate, pump bushing, 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.

  1. Disconnect battery negative cable.
  2.  
  3. Disconnect and lower or remove necessary exhaust components.
  4.  
  5. Disconnect fluid cooler lines at transmission.
  6.  
  7. Remove starter motor.
  8.  
  9. Disconnect and remove crankshaft position sensor. Retain sensor attaching bolts
    CAUTION
    The crankshaft position sensor will be damaged if the transmission is removed, or installed, while the sensor is still bolted to the engine block, or transmission (4.0L only) To avoid damage, be sure to remove the sensor before removing the transmission.

  10.  
  11. Remove the bolts holding the bell housing brace to the transmission.
  12.  
  13. Remove nut holding the bell housing brace to the engine to transmission bending brace.
  14.  
  15. Remove the bell housing brace from the transmission.
  16.  
  17. Remove the bolt holding the torque converter cover to the transmission.
  18.  
  19. Remove the torque converter cover from the transmission.
  20.  
  21. If transmission is being removed for overhaul, remove transmission oil pan, drain fluid and reinstall pan.
  22.  
  23. Remove fill tube bracket bolts and pull tube out of transmission. Retain fill tube seal. On 4 x 4 models, it will also be necessary to remove bolt attaching transfer case vent tube to converter housing.
  24.  
  25. Rotate crankshaft in clockwise direction until converter bolts are accessible. Then remove bolts one at a time. Rotate crankshaft with socket wrench on dampener bolt.
  26.  
  27. Mark propeller shaft and axle yokes for assembly alignment. Then disconnect and remove propeller shaft. On 4 x 4 models, remove both propeller shafts.
  28.  
  29. Disconnect wires from park/neutral position switch and transmission solenoid.
  30.  
  31. Disconnect gearshift cable from transmission manual valve lever.
  32.  
  33. Disconnect throttle valve cable from transmission bracket and throttle valve lever.
  34.  
  35. Disconnect transfer case shift cable from the transfer case shift lever.
  36.  
  37. Remove the clip securing the transfer case shift cable into the cable support bracket.
  38.  
  39. Disconnect transmission fluid cooler lines at transmission fittings and clips.
  40.  
  41. Support rear of engine with safety stand or jack.
  42.  
  43. Raise transmission slightly with service jack to relieve load on crossmember and supports.
  44.  
  45. Remove bolts securing rear support and cushion to transmission and crossmember.
  46.  
  47. Remove bolts attaching crossmember to frame and remove crossmember.
  48.  
  49. Remove transfer case.
  50.  
  51. Remove bolts holding the upper transmission bending braces to the torque converter housing and the overdrive unit.
  52.  
  53. Remove all remaining converter housing bolts.
  54.  
  55. Carefully work transmission and torque converter assembly rearward off engine block dowels.
  56.  
  57. Hold torque converter in place during transmission removal.
  58.  
  59. Lower transmission and remove assembly from under the vehicle.
  60.  
  61. To remove torque converter, carefully slide torque converter out of the transmission.
  62.  

To install:

Click image to see an enlarged view

Fig. Bell housing brace and converter cover

  1. Check torque converter hub and hub drive notches for sharp edges burrs, scratches, or nicks. Polish the hub and notches with 320/400 grit paper and crocus cloth if necessary.
  2.  
  3. The hub must be smooth to avoid damaging pump seal at installation.
  4.  
  5. Lubricate oil pump seal lip with transmission fluid.
  6.  
  7. Align converter and oil pump.
  8.  
  9. Carefully insert converter in oil pump. Then rotate converter back and forth until fully seated in pump gears.
  10.  
  11. Check converter seating with steel scale and straightedge. Surface of converter lugs should be 1 / 2 in. to rear of straightedge when converter is fully seated.
  12.  
  13. Temporarily secure converter with C-clamp.
  14.  
  15. Position transmission on jack and secure it with chains.
  16.  
  17. Check condition of converter drive plate. Replace the plate if cracked, distorted or damaged. Also be sure transmission dowel pins are seated in engine block and protrude far enough to hold transmission in alignment.
  18.  
  19. Apply a light coating of Mopar® High Temp grease to the torque converter hub pocket in the rear of the crankshaft
  20.  
  21. Raise transmission and align converter with drive plate and converter housing with engine block.
  22.  
  23. Move transmission forward. Then raise, lower or tilt transmission to align converter housing with engine block dowels.
  24.  
  25. Carefully work transmission forward and over engine block dowels until converter hub is seated in crankshaft.
  26.  
  27. Install two bolts to attach converter housing to engine.
  28.  
  29. Install the upper transmission bending braces to the torque converter housing and the overdrive unit. Tighten the bolts to 30 ft. lbs. (41 Nm)
  30.  
  31. Install remaining torque converter housing to engine bolts. Tighten to 50 ft. lbs. (68 Nm).
  32.  
  33. Install rear transmission crossmember. Tighten crossmember to frame bolts to 50 ft. lbs. (68 Nm).
  34.  
  35. Install rear support to transmission. Tighten bolts to 35 ft. lbs. (47 Nm).
  36.  
  37. Lower transmission onto crossmember and install bolts attaching transmission mount to crossmember. Tighten clevis bracket to crossmember bolts to 35 ft. lbs. (47 Nm). Tighten the clevis bracket to rear support bolt to 50 ft. lbs. (68 Nm).
  38.  
  39. Remove engine support fixture.
  40.  
  41. Install crankshaft position sensor.
  42.  
  43. Install new plastic retainer grommet on any shift cable that was disconnected. Grommets should not be reused. Use pry tool to remove rod from grommet and cut away old grommet. Use pliers to snap new grommet into cable and to snap grommet onto lever.
  44.  
  45. Connect gearshift and throttle valve cable to transmission.
  46.  
  47. Connect wires to park/neutral position switch and transmission solenoid connector. Be sure transmission harnesses are properly routed
    CAUTION
    It is essential that correct length bolts be used to attach the converter to the drive plate. Bolts that are too long will damage the clutch surface inside the converter.

  48.  
  49. Install torque converter-to-drive plate bolts. Tighten bolts to 270 in. lbs. (31 Nm)
  50.  
  51. Install converter housing access cover. Tighten bolt to 200 inch lbs. (23 Nm)
  52.  
  53. Install the bell housing brace to the torque converter cover and the engine to transmission bending brace. Tighten the bolts and nut to 30 ft. lbs. (41 Nm)
  54.  
  55. Install starter motor and cooler line bracket.
  56.  
  57. Connect cooler lines to transmission.
  58.  
  59. Install transmission fill tube. Install new seal on tube before installation.
  60.  
  61. Install exhaust components.
  62.  
  63. Install transfer case. Tighten transfer case nuts to 26 ft. lbs. (35 Nm).
  64.  
  65. Install the transfer case shift cable to the cable support bracket and the transfer case shift lever.
  66.  
  67. Align and connect propeller shaft(s)
  68.  
  69. Adjust gearshift linkage and throttle valve cable if necessary.
  70.  
  71. Lower vehicle.
  72.  
  73. Fill transmission with Mopar® ATF Plus 3, Type 7176 fluid.
  74.  


NOTE
The transmission and torque converter must be removed as an assembly to avoid component damage. The converter drive plate, pump bushing, 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.

  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Disconnect battery negative cable.
  4.  
  5. Disconnect and lower or remove necessary exhaust components.
  6.  
  7. Disconnect fluid cooler lines at transmission.
  8.  
  9. Remove starter motor.
  10.  
  11. Disconnect and remove crankshaft position sensor. Retain sensor attaching bolts.
    NOTE
    The crankshaft position sensor will be damaged if the transmission is removed, or installed, while the sensor is still bolted to the engine block, or transmission (4.0L only). To avoid damage, be sure to remove the sensor before removing the transmission.

  12.  
  13. Remove the bolts holding the bell housing brace to the transmission.
  14.  
  15. Remove nut holding the bell housing brace to the engine to transmission bending brace.
  16.  
  17. Remove the bell housing brace from the transmission.
  18.  
  19. Remove the bolt holding the torque converter cover to the transmission.
  20.  
  21. Remove the torque converter cover from the transmission.
  22.  
  23. If transmission is being removed for overhaul, remove transmission oil pan, drain fluid and reinstall pan.
  24.  
  25. Remove fill tube bracket bolts and pull tube out of transmission. Retain fill tube seal. On 4 x 4 models, it will also be necessary to remove bolt attaching transfer case vent tube to converter housing.
  26.  
  27. Rotate crankshaft in clockwise direction until converter bolts are accessible. Then remove bolts one at a time. Rotate crankshaft with socket wrench on dampener bolt.
  28.  
  29. Mark propeller shaft and axle yokes for assembly alignment. Then disconnect and remove propeller shaft. On 4 x 4 models, remove both propeller shafts.
  30.  
  31. Disconnect wires from park/neutral position switch and transmission solenoid.
  32.  
  33. Disconnect gearshift cable from transmission manual valve lever.
  34.  
  35. Disconnect throttle valve cable from transmission bracket and throttle valve lever.
  36.  
  37. Disconnect transfer case shift cable from the transfer case shift lever.
  38.  
  39. Remove the clip securing the transfer case shift cable into the cable support bracket.
  40.  
  41. Disconnect transmission fluid cooler lines at transmission fittings and clips.
  42.  
  43. Support rear of engine with safety stand or jack.
  44.  
  45. Raise transmission slightly with service jack to relieve load on crossmember and supports.
  46.  
  47. Remove bolts securing rear support and cushion to transmission and crossmember.
  48.  
  49. Remove bolts attaching crossmember to frame and remove crossmember.
  50.  
  51. Remove transfer case.
  52.  

To install:

  1. Check torque converter hub and hub drive notches for sharp edges burrs, scratches, or nicks. Polish the hub and notches with 320/400 grit paper and crocus cloth if necessary. The hub must be smooth to avoid damaging pump seal during installation.
  2.  
  3. Lubricate oil pump seal lip with transmission fluid.
  4.  
  5. Align converter and oil pump.
  6.  
  7. Carefully insert converter in oil pump. Then rotate converter back and forth until fully seated in pump gears.
  8.  
  9. Check converter seating with steel scale and straightedge. Surface of converter lugs should be 1 / 2 in. to rear of straightedge when converter is fully seated.
  10.  
  11. Temporarily secure converter with C-clamp.
  12.  
  13. Position transmission on jack and secure it with chains.
  14.  
  15. Check condition of converter drive plate. Replace the plate if cracked, distorted or damaged. Also be sure transmission dowel pins are seated in engine block and protrude far enough to hold transmission in alignment.
  16.  
  17. Apply a light coating of Mopar® High Temp grease to the torque converter hub pocket in the rear of the crankshaft.
  18.  
  19. Raise transmission and align converter with drive plate and converter housing with engine block.
  20.  
  21. Move transmission forward. Then raise, lower or tilt transmission to align converter housing with engine block dowels.
  22.  
  23. Carefully work transmission forward and over engine block dowels until converter hub is seated in crankshaft.
  24.  
  25. Install two bolts to attach converter housing to engine.
  26.  
  27. Install the upper transmission bending braces to the torque converter housing and the overdrive unit. Tighten the bolts to 30 ft. lbs. (41 Nm).
  28.  
  29. Install remaining torque converter housing to engine bolts. Tighten to 50 ft. lbs. (68 Nm).
  30.  
  31. Install rear transmission crossmember. Tighten crossmember to frame bolts to 68 Nm (50 ft. lbs.).
  32.  
  33. Install rear support to transmission. Tighten bolts to 35 ft. lbs. (47 Nm).
  34.  
  35. Lower transmission onto crossmember and install bolts attaching transmission mount to crossmember. Tighten clevis bracket to crossmember bolts to 35 ft. lbs. (47 Nm).Tighten the clevis bracket to rear support bolt to 50 ft. lbs. (68 Nm).
  36.  
  37. Remove engine support fixture.
  38.  
  39. Install crankshaft position sensor.
  40.  
  41. Install new plastic retainer grommet on any shift cable that was disconnected. Grommets should not be reused. Use pry tool to remove rod from grommet and cut away old grommet. Use pliers to snap new grommet into cable and to snap grommet onto lever.
  42.  
  43. Connect gearshift and throttle valve cable to transmission.
  44.  
  45. Connect wires to park/neutral position switch and transmission solenoid connector. Be sure transmission harnesses are properly routed.
    NOTE
    It is essential that correct length bolts be used to attach the converter to the drive plate. Bolts that are too long will damage the clutch surface inside the converter.

  46.  
  47. Install all torque converter-to-drive plate bolts by hand.
  48.  
  49. Verify that the torque converter is pulled flush to the drive plate. Tighten bolts to 270 inch lbs. (31 Nm).
  50.  
  51. Install converter housing access cover. Tighten bolt to 200 inch lbs. (23 Nm).
  52.  
  53. Install the bell housing brace to the torque converter cover and the engine to transmission bending brace. Tighten the bolts and nut to 30 ft. lbs. (41 Nm).
  54.  
  55. Install starter motor and cooler line bracket.
  56.  
  57. Connect cooler lines to transmission.
  58.  
  59. Install transmission fill tube. Install new seal on tube before installation.
  60.  
  61. Install exhaust components.
  62.  
  63. Install transfer case. Tighten transfer case nuts to 26 ft. lbs. (35 Nm).
  64.  
  65. Install the transfer case shift cable to the cable support bracket and the transfer case shift lever.
  66.  
  67. Align and connect propeller shaft(s).
  68.  
  69. Adjust gearshift linkage and throttle valve cable if necessary.
  70.  
  71. Lower vehicle.
  72.  
  73. Fill transmission with Mopar® ATF +4, type 9602, fluid.
  74.  

42rfe Automatic Transmission




CAUTION
The transmission and torque converter must be removed as an assembly to avoid component damage. The converter drive plate, pump bushing, 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.

  1. Disconnect the negative battery cable.
  2.  
  3. Raise and support the vehicle
  4.  
  5. Mark propeller shaft and axle yokes for assembly alignment.
  6.  
  7. Remove the rear propeller shaft
  8.  
  9. Remove the front propeller shaft.
  10.  
  11. Remove the engine to transmission collar.
  12.  
  13. Remove the exhaust support bracket from the rear of the transmission.
  14.  
  15. Disconnect and lower or remove any necessary exhaust components.
  16.  
  17. Remove the starter motor.
  18.  
  19. Rotate crankshaft in clockwise direction until converter bolts are accessible. Then remove bolts one at a time. Rotate crankshaft with socket wrench on dampener bolt.
  20.  
  21. Disconnect wires from solenoid and pressure switch assembly, input and output speed sensors, and line pressure sensor.
  22.  
  23. Disconnect gearshift cable from transmission manual valve lever.
  24.  
  25. Disconnect transfer case shift cable from the transfer case shift lever.
  26.  
  27. Remove the clip securing the transfer case shift cable into the cable support bracket.
  28.  
  29. Disconnect transmission fluid cooler lines at transmission fittings and clips.
  30.  
  31. Disconnect the transmission vent hose from the transmission.
  32.  
  33. Support rear of engine with safety stand or jack.
  34.  
  35. Raise transmission slightly with service jack to relieve load on crossmember and supports.
  36.  
  37. Remove bolts securing rear support and cushion to transmission and crossmember.
  38.  
  39. Remove bolts attaching crossmember to frame and remove crossmember.
  40.  
  41. Remove transfer case.
  42.  
  43. Remove all remaining converter housing bolts.
  44.  
  45. Carefully work transmission and torque converter assembly rearward off engine block dowels.
  46.  
  47. Hold torque converter in place during transmission removal.
  48.  
  49. Lower transmission and remove assembly from under the vehicle.
  50.  
  51. To remove torque converter, carefully slide torque converter out of the transmission.
  52.  

To install:

  1. Check torque converter hub and hub drive notches for sharp edges burrs, scratches, or nicks. Polish the hub and notches with 320/400 grit paper and crocus cloth if necessary. The hub must be smooth to avoid damaging pump seal at installation.
  2.  
  3. If a replacement transmission is being installed, transfer any components necessary, such as the manual shift lever and shift cable bracket, from the original transmission onto the replacement transmission.
  4.  
  5. Lubricate oil pump seal lip with transmission fluid.
  6.  
  7. Align converter and oil pump.
  8.  
  9. Carefully insert converter in oil pump. Then rotate converter back and forth until fully seated in pump gears.
  10.  
  11. Check converter seating with steel scale and straightedge. Surface of converter lugs should be 1 / 2 in. to rear of straightedge when converter is fully seated.
  12.  
  13. Temporarily secure converter with C-clamp.
  14.  
  15. Position transmission on jack and secure it with chains.
  16.  
  17. Check condition of converter drive plate. Replace the plate if cracked, distorted or damaged. Also be sure transmission dowel pins are seated in engine block and protrude far enough to hold transmission in alignment.
  18.  
  19. Apply a light coating of Mopar® High Temp Grease to the torque converter hub pocket in the rear
  20.  
  21. Raise transmission and align converter with drive plate and converter housing with engine block.
  22.  
  23. Move transmission forward. Then raise, lower or tilt transmission to align converter housing with engine block dowels.
  24.  
  25. Carefully work transmission forward and over engine block dowels until converter hub is seated in crankshaft.
  26.  
  27. Install two bolts to attach converter housing to engine.
  28.  
  29. Install remaining torque converter housing to engine bolts. Tighten to 50 ft. lbs. (68 Nm).
  30.  
  31. Install rear transmission crossmember. Tighten crossmember to frame bolts to 50 ft. lbs. (68 Nm)
  32.  
  33. Install rear support to transmission. Tighten bolts to 35 ft. lbs. (47 Nm).
  34.  
  35. Lower transmission onto crossmember and install bolts attaching transmission mount to crossmember. Tighten clevis bracket to crossmember bolts to 35 ft. lbs. (47 Nm). Tighten the clevis bracket to rear support bolt to 50 ft. lbs. (68 Nm).
  36.  
  37. Remove engine support fixture.
  38.  
  39. Install new plastic retainer grommet on any shift cable that was disconnected. Grommets should not be reused. Use pry tool to remove rod from grommet and cut away old grommet. Use pliers to snap new grommet into cable and to snap grommet onto lever.
  40.  
  41. Connect gearshift cable to transmission.
  42.  
  43. Connect wires to solenoid and pressure switch assembly connector, input and output speed sensors, and line pressure sensor. Be sure transmission harnesses are properly routed
    CAUTION
    It is essential that correct length bolts be used to attach the converter to the drive plate. Bolts that are too long will damage the clutch surface inside the converter.

  44.  
  45. Install torque converter-to-drive plate bolts. Tighten bolts to 270 in. lbs. (31 Nm)
  46.  
  47. Install starter motor and cooler line bracket.
  48.  
  49. Connect cooler lines to transmission.
  50.  
  51. Install transmission fill tube.
  52.  
  53. Install exhaust components.
  54.  
  55. Install transfer case. Tighten transfer case nuts to 26 ft. lbs. (35 Nm)
  56.  
  57. Install the transfer case shift cable to the cable support bracket and the transfer case shift lever.
  58.  
  59. Install the transmission collar onto the transmission and the engine. Tighten the bolts to 40 ft. lbs. (54 Nm)
  60.  
  61. Align and connect propeller shaft(s)
  62.  
  63. Adjust gearshift cable if necessary.
  64.  
  65. Lower vehicle.
  66.  
  67. Fill transmission with Mopar® ATF Plus 3, Type 7176 fluid.
  68.  

545RFE




NOTE
The transmission and torque converter must be removed as an assembly to avoid component damage. The converter drive plate, converter hub O-ring, 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.

  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Raise and support the vehicle
  6.  
  7. Mark propeller shaft and axle yokes for assembly alignment.
  8.  
  9. Remove the rear propeller shaft
  10.  
  11. Remove the front propeller shaft.
  12.  
  13. Remove the engine to transmission collar.
  14.  
  15. Remove the exhaust support bracket from the rear of the transmission.
  16.  
  17. Disconnect and lower or remove any necessary exhaust components.
  18.  
  19. Remove the starter motor.
  20.  
  21. Rotate crankshaft in clockwise direction until converter bolts are accessible. Then remove bolts one at a time. Rotate crankshaft with socket wrench on dampener bolt.
  22.  
  23. Disconnect wires from solenoid and pressure switch assembly, input and output speed sensors, and line pressure sensor.
  24.  
  25. Disconnect gearshift cable from transmission manual valve lever.
  26.  
  27. Disconnect transfer case shift cable from the transfer case shift lever.
  28.  
  29. Remove the clip securing the transfer case shift cable into the cable support bracket.
  30.  
  31. Disconnect transmission fluid cooler lines at transmission fittings and clips.
  32.  
  33. Disconnect the transmission vent hose from the transmission.
  34.  
  35. Support rear of engine with safety stand or jack.
  36.  
  37. Raise transmission slightly with service jack to relieve load on crossmember and supports.
  38.  
  39. Remove bolts securing rear support and cushion to transmission and crossmember.
  40.  
  41. Remove bolts attaching crossmember to frame and remove crossmember.
  42.  
  43. Remove transfer case.
  44.  
  45. Remove all remaining converter housing bolts.
  46.  
  47. Carefully work transmission and torque converter assembly rearward off engine block dowels.
  48.  
  49. Hold torque converter in place during transmission removal.
  50.  
  51. Lower transmission and remove assembly from under the vehicle.
  52.  
  53. To remove torque converter, carefully slide torque converter out of the transmission. To install:
  54.  
  55. Check torque converter hub and hub drive flats for sharp edges burrs, scratches, or nicks. Polish the hub and flats with 320/400 grit paper and crocus cloth if necessary. Verify that the converter hub O-ring is properly installed and is free of any debris. The hub must be smooth to avoid damaging pump seal at installation.
  56.  
  57. If a replacement transmission is being installed, transfer any components necessary, such as the manual shift lever and shift cable bracket, from the original transmission onto the replacement transmission.
  58.  
  59. Lubricate oil pump seal lip with transmission fluid.
  60.  
  61. Align converter and oil pump.
  62.  
  63. Carefully insert converter in oil pump. Then rotate converter back and forth until fully seated in pump gears.
  64.  
  65. Check converter seating with steel scale and straightedge. Surface of converter lugs should be at least 13mm ( 1 / 2 in.) to rear of straightedge when converter is fully seated.
  66.  
  67. Temporarily secure converter with C-clamp.
  68.  
  69. Position transmission on jack and secure it with chains.
  70.  
  71. Check condition of converter drive plate. Replace the plate if cracked, distorted or damaged.
    NOTE
    Be sure transmission dowel pins are seated in engine block and protrude far enough to hold transmission in alignment.

  72.  
  73. Apply a light coating of Mopar® High Temp Grease to the torque converter hub pocket in the rear pocket of the engine-s crankshaft.
  74.  
  75. Raise transmission and align the torque converter with the drive plate and the transmission converter housing with the engine block.
  76.  
  77. Move transmission forward. Then raise, lower, or tilt transmission to align the converter housing with the engine block dowels.
  78.  
  79. Carefully work transmission 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.
  80.  
  81. Install two bolts to attach the transmission to the engine.
  82.  
  83. Install remaining torque converter housing to engine bolts. Tighten to 50 ft. lbs. (68 Nm).
  84.  
  85. Install rear transmission crossmember. Tighten crossmember to frame bolts to 50 ft. lbs. (68 Nm).
  86.  
  87. Install rear support to transmission. Tighten bolts to 35 ft. lbs. (47 Nm).
  88.  
  89. Lower transmission onto crossmember and install bolts attaching transmission mount to crossmember. Tighten clevis bracket to crossmember bolts to 35 ft. lbs. (47 Nm). Tighten the clevis bracket to rear support bolt to 50 ft. lbs. (68 Nm).
  90.  
  91. Install both the left and right side oil pan to transmission bolts, 5.7L only. Torque the bolts to 39 ft. lbs. (57 Nm).
  92.  
  93. Remove engine support fixture.
  94.  
  95. Install new plastic retainer grommet on any shift cable that was disconnected. Grommets should not be reused. Use pry tool to remove rod from grommet and cut away old grommet. Use pliers to snap new grommet into cable and to snap grommet onto lever.
  96.  
  97. Connect gearshift cable to transmission.
  98.  
  99. Connect wires to solenoid and pressure switch assembly connector, input and output speed sensors, and line pressure sensor. Be sure transmission harnesses are properly routed.
    NOTE
    It is essential that correct length bolts be used to attach the converter to the drive plate. Bolts that are too long will damage the clutch surface inside the converter.

  100.  
  101. Install all torque converter-to-drive plate bolts by hand.
  102.  
  103. Verify that the torque converter is pulled flush to the drive plate. Tighten bolts to 270 inch lbs. (31 Nm).
  104.  
  105. Install starter motor and cooler line bracket.
  106.  
  107. Connect cooler lines to transmission.
  108.  
  109. Install transmission fill tube.
  110.  
  111. Install exhaust components.
  112.  
  113. Install transfer case. Tighten transfer case nuts to 26 ft. lbs. (35 Nm).
  114.  
  115. Install the transfer case shift cable to the cable support bracket and the transfer case shift lever.
  116.  
  117. Install the structural dust cover onto the transmission and the engine.
  118.  
  119. Align and connect propeller shaft(s).
  120.  
  121. Adjust gearshift cable if necessary.
  122.  
  123. Lower vehicle.
  124.  
  125. Fill transmission with Mopar® ATF +4, Automatic Transmission fluid.
  126.  

Electronic Automatic Transmission



  1. Raise vehicle.
  2.  
  3. Drain transmission fluid and reinstall oil pan drain plug.
  4.  
  5. On models with 2 - piece fill tube, remove upper half of tube
  6.  
  7. Disconnect cooler lines at transmission.
  8.  
  9. Support engine with safety stand and support transmission with jack.
  10.  
  11. Disconnect transmission and transfer case shift linkage.
  12.  
  13. Remove necessary exhaust components.
  14.  
  15. Disconnect vehicle speed sensor wires
  16.  
  17. Mark position of front and rear propeller shafts for alignment reference. Then remove shafts from vehicle.
  18.  
  19. Remove rear crossmember.
  20.  
  21. Disconnect transmission shift cable at transmission. Then disconnect transmission throttle valve cable at engine.
  22.  
  23. Disconnect necessary vacuum and fluid hoses.
  24.  
  25. Remove transfer case from transmission.
  26.  
  27. Disconnect and remove crankshaft position sensor.
    CAUTION
    The crankshaft position sensor can be damaged during transmission removal (or installation) if the sensor is still bolted to the engine block. To avoid damage, remove the sensor before removing the transmission

  28.  
  29. Remove starter motor.
  30.  
  31. Remove bolts attaching converter to drive plate.
  32.  
  33. Remove bolts attaching converter housing to engine.
  34.  
  35. Secure transmission to jack with safety chains.
  36.  
  37. Pull transmission rearward for access to converter. Then secure converter in pump with C-clamp or strap bolted to converter housing.
  38.  
  39. Remove transmission from under vehicle.
  40.  
  41. Remove torque converter if converter or oil pump seal are to be serviced.
  42.  

To install:

Click image to see an enlarged view

Fig. Electronic automatic transmission mounting diagram

  1. Mount transmission on transmission jack. Then secure transmission to jack with safety chains.
  2.  
  3. Lubricate converter drive hub and oil pump seal lip with transmission fluid. Then install converter. Be sure converter is fully seated in oil pump gears before proceeding. Hold converter in place with C - clamp or strap attached to converter housing.
  4.  
  5. Lubricate the pocket in the rear of the crankshaft, in which the converter pilot hub rides, with a light coating of Mopar®High-Temp Grease.
  6.  
  7. Align and position transmission and converter on engine.
  8.  
  9. Remove clamp or strap used to hold torque converter in place.
  10.  
  11. Move transmission forward seat and it on engine. Be sure torque converter hub is fully seated.
  12.  
  13. Install converter housing - to - engine bolts.
  14.  
  15. Install converter-to-drive plate bolts.
  16.  
  17. Install and connect starter motor.
  18.  
  19. Install and connect crankshaft position sensor.
  20.  
  21. Install transfer case on transmission.
  22.  
  23. Connect transfer case shift linkage and vacuum hoses.
  24.  
  25. Connect exhaust components.
  26.  
  27. Install rear crossmember and remove jack used to support transmission assembly.
  28.  
  29. Connect speed sensor wire harness to sensor.
  30.  
  31. Connect wire harness to park/neutral position switch.
  32.  
  33. Align and connect front and rear propeller shafts.
  34.  
  35. Connect transmission wire harnesses and transfer case vacuum and wire harnesses.
  36.  
  37. Connect transmission cooler lines.
  38.  
  39. Connect transmission throttle cable at engine.
  40.  
  41. Install new O - ring seal on upper half of transmission fill tube. Then connect upper and lower tube halves.
  42.  
  43. Lower vehicle.
  44.  
  45. Fill transmission with Mopar® Dexron®IIE/Mercon®automatic transmission fluid.
  46.  

NAG1 Transmission




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.

  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Raise and support the vehicle.
  6.  
  7. Remove the drive shafts.
  8.  
  9. Remove the bolts holding the starter motor to the transmission.
  10.  
  11. Remove the starter from the transmission starter pocket and safely relocate.

    Click image to see an enlarged view

    Fig. Structural cover-2005 Grand Cherokee w/NAG1

  12.  
  13. Remove the bolts holding the structural cover to the transmission and engine.
  14.  
  15. Remove the structural cover from the vehicle.
  16.  
  17. Rotate crankshaft in clockwise direction until converter bolts are accessible. Then remove bolts one at a time. Rotate crankshaft with socket wrench on dampener bolt.
  18.  
  19. Disconnect the gearshift cable from the transmission manual valve lever.
  20.  
  21. Remove the shift cable from the gearshift cable bracket.
  22.  
  23. Disconnect 13-pin plug connector. Turn bayonet lock of guide bushing counterclockwise.
  24.  
  25. Remove the 13-pin connector from the transmission.
  26.  
  27. Disconnect transmission fluid cooler lines at transmission.
  28.  
  29. Disconnect the transmission vent hose from the transmission.
  30.  
  31. Remove the bolts holding the transmission fill tube to the transmission.
  32.  
  33. Support rear of engine with safety stand or jack.
  34.  
  35. Raise transmission slightly with service jack to relieve load on crossmember and supports.
  36.  
  37. Remove bolts securing rear support and cushion to transmission crossmember.
  38.  
  39. Remove bolts attaching crossmember to frame and remove crossmember.
  40.  
  41. Remove all remaining bolts holding the engine to the transmission. Note the location of any wiring harness clips.
  42.  
  43. Carefully work transmission and torque converter assembly rearward off engine block dowels.
  44.  
  45. Hold torque converter in place during transmission removal.
  46.  
  47. Lower transmission and remove assembly from under the vehicle.
  48.  
  49. To remove torque converter, carefully slide torque converter out of the transmission.
  50.  

To install:

  1. Check torque converter hub and hub drive flats for sharp edges burrs, scratches, or nicks. Polish the hub and flats with 320/400 grit paper and crocus cloth if necessary. The hub must be smooth to avoid damaging pump seal at installation.
  2.  
  3. If a replacement transmission is being installed, transfer any components necessary, such as the manual shift lever and shift cable bracket, from the original transmission onto the replacement transmission.
  4.  
  5. Lubricate oil pump seal lip with transmission fluid.
  6.  
  7. Place torque converter in position on transmission.
    WARNING
    Do not damage oil pump seal or converter hub while inserting torque converter into the front of the transmission.

  8.  
  9. Align torque converter to oil pump seal opening.
  10.  
  11. Insert torque converter hub into oil pump.
  12.  
  13. While pushing torque converter inward, rotate converter until converter is fully seated in the oil pump gears.
  14.  
  15. Check converter seating with a scale and straightedge. Surface of converter lugs should be at least 19mm ( 3 / 4 in.) to rear of straightedge when converter is fully seated.
  16.  
  17. If necessary, temporarily secure converter with C-clamp attached to the converter housing.
  18.  
  19. Check condition of converter drive plate. Replace the plate if cracked, distorted or damaged. Also be sure transmission dowel pins are seated in engine block and protrude far enough to hold transmission in alignment.
  20.  
  21. Apply a light coating of Mopar® High Temp Grease to the torque converter hub pocket in the rear pocket of the engine-s crankshaft.
  22.  
  23. Raise transmission and align the torque converter with the drive plate and the transmission converter housing with the engine block.
  24.  
  25. Move transmission forward. Then raise, lower, or tilt transmission to align the converter housing with the engine block dowels.
  26.  
  27. Carefully work transmission 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.
  28.  
  29. Install two bolts to attach the transmission to the engine.
  30.  
  31. Install remaining torque converter housing to engine bolts. Tighten to 29 ft. lbs.(36 Nm).
  32.  
  33. Install rear transmission crossmember. Tighten crossmember to frame bolts to 50 ft. lbs. (68 Nm).
  34.  
  35. Install rear support to transmission. Tighten bolts to 35 ft. lbs. (47 Nm).
  36.  
  37. Lower transmission onto crossmember and install bolts attaching transmission mount to crossmember. Tighten clevis bracket to crossmember bolts to 35 ft. lbs. (47 Nm). Tighten the clevis bracket to rear support bolt to 50 ft. lbs. (68 Nm).
  38.  
  39. Remove engine support fixture.
  40.  
  41. Install the engine to transmission structural cover.
  42.  
  43. Connect gearshift cable to the gearshift cable bracket and transmission.
  44.  
  45. Check O-ring on plug connector, and replace if necessary.
  46.  
  47. Install the plug connector into the guide bushing. Turn bayonet lock of guide bushing clockwise to connect plug connector.
    WARNING
    It is essential that correct length bolts be used to attach the converter to the drive plate. Bolts that are too long will damage the clutch surface inside the converter.

  48.  
  49. Install all torque converter-to-drive plate bolts by hand.
  50.  
  51. Verify that the torque converter is pulled flush to the drive plate. Tighten bolts to 30 ft. lbs. (42 Nm).
  52.  
  53. Install starter motor.
  54.  
  55. Install transmission fill tube.
  56.  
  57. Connect cooler lines to transmission.
  58.  
  59. Install exhaust components.
  60.  
  61. Install transfer case, if necessary. Tighten transfer case nuts to 26 ft. lbs. (35 Nm).
  62.  
  63. Align and connect drive shafts.
  64.  
  65. Adjust gearshift cable if necessary.
  66.  
  67. Lower vehicle.
  68.  
  69. Connect negative battery cable.
  70.  
  71. Fill transmission with the appropriate fluid.
  72.  
  73. Verify proper operation.
  74.  

 
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