1. Transfer Case Disassemble

Transfer Case Disassemble

^ Tools Required
- J 3289-20 Holding Fixture
- J 23907 Slide Hammer with Bearing Adapter
- J 26941 Bushing and Bearing Remover (3-4 inch)
- J 36513 Gear and Bearing Separator Plate
- J 44707 T Bar Push Puller
- J 44737 Shift Rail Bearing Remover
- J 44759 Adapter 3/8 NC to 5/8 NF
- J 45358 Case Spreader
- J 45380 Transfer Case Rear Bushing Remover and Installer
- J 45759 Assembly Fixture





1. Important: Because of manufacturing design changes, the transfer case was manufactured with either 1st design oil pump suction pipe components or the 2nd design oil pump suction pipe assembly. The 2nd design oil pump suction pipe assembly is a 1 piece design and is serviced as an assembly. The changes are for manufacturing purposes only and do not enhance the performance of the transfer case.

If available, using the adapter studs, attach the J 45759 (2) to the transfer case.
2. Mount the J 3289-20 (1) to a sturdy workbench.
3. Install the J 45759 (2) into the J 3289-20 (1) and secure with the pivot pin.





4. Remove the drain plug.
5. Tip the transfer case to remove any remaining transfer case fluid.





6. Notice: Refer to Transfer Case Seal Removal Notice in Service Precautions.

Using a fine flat-bladed screwdriver and a mallet, loosen the front input shaft seal.





7. Using a small block of wood and a large flat-bladed screwdriver, remove the front input shaft seal from the transfer case.





8. Remove the front input shaft seal.





9. Remove the dust seal from the front output shaft. The front output shaft oil seal does not require removal at this time.





10. Remove the transfer case bolt that is retaining the wiring harness bracket.
11. Mark the location of the wiring harness bracket bolt.
12. Remove the encoder/motor mounting bolts.





13. Remove the encoder/motor assembly.





14. Remove both vehicle speed sensors (VSS) and O-ring seals from the rear extension.





15. Notice: Refer to Transfer Case Seal Removal Notice in Service Precautions.

Remove the rear output seal.





16. Inspect the rear output shaft bushing for scoring or wear.
17. Remove the rear output shaft bushing using the J 45380.
^ Install the finger section of the J 45380 in front of the bushing.
^ Install the tube and forcing screw assembly to the finger section. Ensure the forcing screw is backed out.
^ Using a wrench on the forcing screw, remove the rear output shaft bushing.





18. Important: Remove the rear extension and case half bolts at the same time for easier rear case disassembly.

Remove the rear extension mounting bolts.





19. Remove the case half bolts.





20. Notice: Refer to Machined Surface Damage Notice in Service Precautions.

Install the J 45358 between the tabs on one side of the case.

21. Important:
^ Ensure that all of the case half bolts have been removed.
^ DO NOT use screwdrivers or pry bars to separate the transfer case halves. The special tool must be used to separate the transfer case halves properly.

Using the J 45358, shear the sealer securing the front and rear case half together.
22. Move the J 45358 to the tabs on the other side of the case and shear the sealer.





23. Use a suitable prying tool at one side of the case half.





24. Use a suitable prying tool at the other side of the cased halves.
25. Working both tools, separate the front input shaft from the front output shaft bearing, and the input shaft from the output shaft.





26. Remove the front case half from the rear case half. Only the input gear assembly will remain with the front case half.





27. Important: If using the drive chain and sprockets again, mark the position of the drive chain to the sprockets in order for the proper wear pattern alignment.

Remove the front output shaft from the front output shaft rear bearing.
28. Remove the drive chain assembly from the drive gear on the output shaft and the driven gear on the front output shaft.





29. Remove the retaining ring for the high/low shift fork.





30. Remove the top shift fork spring.





31. Remove the shift fork assembly from the shift fork shaft.





32. Separate the shift fork from the range sleeve.





33. Remove the bottom shift fork spring.





34. Insert a screwdriver in the slot of the rear extension.





35. Remove the rear extension from the rear case half.





36. Using the J 44707 (1), the J 44759 (2), and the J 36513 (3), remove the speed sensor reluctor wheel from the rear output shaft.
37. Discard the speed sensor reluctor wheel after removal.





38. Remove the rear output shaft assembly.





39. Remove the clutch lever from the rear case half.





40. Remove the shift fork shaft with the shift detent lever. Rotate the control actuator lever shaft in order to remove the shift detent lever.





41. Remove the oil pump cover mounting bolts.





42. Remove the oil pump cover.





43. Remove the oil pump drive gear, the inner rotor.
44. Remove the oil pump driven gear, the outer rotor.





45. While pushing down on the clutch apply plate, remove the clutch pressure plate bearing retaining ring.





46. Remove the clutch inner plate.





47. Remove the clutch pressure plate bearing.





48. Remove the clutch apply plate.





49. Remove the clutch spring.





50. Remove the clutch hub retaining ring.





51. Remove the clutch housing assembly.





52. Hold on to the clutch plates, and turn the clutch housing over on a workbench.
53. Remove the clutch housing from the clutch plates and the clutch hub.
54. Remove the clutch hub from the clutch plates.





55. Remove the drive sprocket retaining ring from the clutch housing.





56. Remove the drive sprocket from the clutch housing.





57. Remove the clutch housing retaining ring from the rear output shaft.





58. Remove the rear output shaft rear thrust washer.





59. Using a press, remove the planetary gear assembly.
1. Support the front case half on press plates, to allow the planetary gear assembly removal.
2. Use a suitable adapter to press on the input gear bearing.





60. Using a press, remove the input gear bearing.
0. Support the planetary gear assembly on press plates, to allow removal of the input gear.
1. Use a suitable adapter to press on the input gear.





61. Remove the input gear.





62. Remove the planetary gear large diameter thrust washer.





63. Remove the input gear smaller diameter thrust washer.





64. If necessary, remove the bore seal and the input gear thrust bearing from the input gear.





65. Remove the driven gear retaining ring from the front output shaft.
66. Remove the driven gear from the front output shaft.





67. Using a hydraulic press and a suitable adapter on the front input shaft, remove the front speed sensor reluctor wheel.





68. Important: The vent only requires removal if it is damaged.

Remove the vent.





69. Remove the front output shaft VSS and O-ring seal from the rear case.





70. Remove the chip collector magnet from the rear case.





71. If 1st design, remove the oil pump suction pipe with the oil pump screen.





72. If 2nd design, remove the oil pump suction pipe assembly.





73. Remove the retaining ring for the control actuator lever shaft.
74. Discard the retaining ring.





75. Remove the control actuator lever shaft from the rear case.





76. Important: Only remove the bearings if they are faulty. Do not use the bearings again.

Inspect the front output shaft rear bearing for being faulty. Refer to Cleaning and Inspection.
77. Using the J 23907 (1) and the J 26941 (2), remove the rear bearing for the front output shaft.





78. Important: Only remove the bearings if they are faulty. Do not use the bearings again.

Inspect the rear output shaft bearing for being faulty. Refer to Cleaning and Inspection.

79. Important: The bushing surface for the oil pump is located by the output shaft bearing. When using the J 26941, the jaws must not come in contact with the oil pump bushing surface.

Using the J 23907 (1) and the J 26941 (2), remove the rear output shaft bearing from the rear case. Ensure the jaws on the J 26941 are between the bearing and the oil pump bushing.





80. Important: Only remove the bearings if they are faulty. Do not use the bearings again.

Inspect the control actuator lever shaft bearing for being faulty. Refer to Cleaning and Inspection.
81. Using the J 44707 (2) and the J 44737 (1), remove the control actuator lever shaft bearing.





82. Notice: Refer to Transfer Case Seal Removal Notice in Service Precautions.

Using a suitable prying tool, remove the front output shaft seal.
83. Discard the seal.





84. Important: Only remove the bearings if they are faulty. Do not use the bearings again.

Inspect the front output shaft front bearing for being faulty. Refer to Cleaning and Inspection.
85. Using a hammer and a punch, remove the front bearing for the front output shaft from the front case.
86. Clean and inspect all the internal parts of the transfer case. Refer to Cleaning and Inspection.