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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1687 (Transfer Case) >> ATX14B >> Transfer Assembly >> Disassembly and Assembly >> Assembly >> Center Case
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Center Case

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. Apply ATF to the O-ring, and install it on the oil filter stud.
    CAUTION: Do not reuse O-rings.
    Fig 1: Applying ATF To O-Ring
    G04174689Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Install the oil filter stud to the oil filter.
  3. Apply ATF to the two O-rings (1), and install them on the oil filter (2).
    CAUTION: Do not reuse O-rings.
    Fig 2: Identifying O-Rings
    G04174690Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Install the oil filter to the center case. Tighten the bolts to the specified torque. Refer to , "COMPONENTS ".
    CAUTION:
    • Do not damage oil filter.
    • Attach oil filter and tighten bolts evenly.
    Fig 3: Identifying Oil Filter Center Case
    G04174691Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Install the outer gear and inner gear into the sub oil pump housing, and measure the side clearance. Refer to , "SUB-OIL PUMP ".
    Fig 4: Identifying Outer Gear, Inner Gear And Sub Oil Pump Housing
    G04174692Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Align the dowel pin hole and bolt hole of the sub oil pump assembly with the center case. Install the sub oil pump cover. Then tighten to the specified torque. Refer to , "COMPONENTS ".
    Fig 5: Identifying Sub Oil Pump Cover
    G04174693Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Apply ATF to the O-ring and install it to the transfer motor.
    CAUTION: Do not reuse O-rings.
    Fig 6: Applying ATF To O-Ring
    G04174694Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Fit the double-flat end of the transfer motor shaft into the slot of the sub-oil pump assembly. Then tighten to the specified torque. Refer to , "COMPONENTS ".
    CAUTION: Be sure to install connector bracket.
  9. Assemble the control valve assembly with the following procedure.
    CAUTION:
    • Do not reuse any part that has been dropped or damaged.
    • Make sure valve is assembled in the proper direction.
    • Do not use a magnet because residual magnetism stays during assembly.
    1. Clean the upper body (5), control valves (3) and springs (4) with cleaning agent, and dry with compressed air.
      Fig 7: Identifying Upper Body, Control Valves And Springs
      G04174695Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Dip the control valves in ATF, and apply ATF to the valve-mounting area of the upper body.
    3. Install each control valve, spring, and plug to the upper body, and install retainer plates to hold them in place.
      CAUTION:
      • To insert control valves into upper body, place upper body on a level surface in order to prevent flaw or damage.
      • Make sure each control valve is smoothly inserted.
      Fig 8: Identifying Control Valve, Spring And Plug
      G04174696Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Install the reverse balls, relief balls and relief springs, accumulator pistons and valve springs to the upper body.
      Fig 9: Identifying Reverse Balls, Relief Balls, Relief Springs, Accumulator Pistons And Valve Springs
      G04174697Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Install the lower body and separator plate to the upper body.
      CAUTION: Do not reuse separator plates.
      Fig 10: Identifying Lower Body And Separator Plate
      G04174698Courtesy of NISSAN MOTOR CO., U.S.A.
    6. With the lower body down, tighten the two bolts shown.
      Fig 11: Tightening Bolts With Lower Body Down
      G04174699Courtesy of NISSAN MOTOR CO., U.S.A.
    7. Apply ATF to the O-rings, and install them to each solenoid valve, switch and terminal body.
      CAUTION: Do not reuse O-rings.
    8. Install the following to the control valve assembly:
      • Clutch pressure solenoid valve
      • Clutch pressure switch
      • 2-4WD shift solenoid valve
      • Line pressure switch
      • Transfer fluid temperature sensor
  10. Apply ATF to lip seals, and install them to the center case.
    CAUTION:
    • Do not reuse lip seals.
    • There are 2 kinds of lip seals (lip seal of large inner diameter: 5 pieces, lip seal of small inner diameter: 2 pieces). Confirm their position for installation.
    Fig 12: Applying ATF To Lip Seals
    G04174700Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Install the control valve assembly to the center case, and tighten to the specified torque. Refer to , "COMPONENTS ".
    CAUTION:
    • Do not reuse any part that has been dropped or damaged.
    • Make sure valve is assembled in the proper direction.
    • Do not use a magnet because residual magnetism stays during assembly.
    Fig 13: Tightening Control Valve Assembly To Center Case
    G04174701Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Install the connector assembly into the center case, and secure with a snap ring.
    Fig 14: Identifying Snap Ring
    G04174702Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Apply ATF to the O-rings, and install them on the oil strainer.
    CAUTION: Do not reuse O-rings.
  14. Install the oil strainer to the control valve assembly.
    Fig 15: Identifying O-Rings And Oil Strainer
    G04174703Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Tighten the bolts to the specified torque. Refer to , "COMPONENTS ".
    Fig 16: Identifying Oil Strainer
    G04174704Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Apply ATF to the D-rings, and install them to the clutch piston.
    CAUTION: Do not reuse D-rings.
    Fig 17: Identifying D-Rings And Clutch Piston
    G04174705Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Install the thrust needle bearing race to the clutch piston.
    Fig 18: Installing Thrust Needle Bearing Race To Clutch Piston
    G04174706Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Install the clutch piston to the center case as shown.
    CAUTION: Install so the fitting protrusion of clutch piston aligns with the dent of center case.
    Fig 19: Installing Clutch Piston To Center Case
    G04174707Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove all the sealant from the oil pressure check port and inside the center case.
    CAUTION: Remove old sealant adhering to mating surfaces. Also remove any moisture, oil, or foreign material adhering to application and mating surfaces.
    Fig 20: Identifying Oil Pressure Check Plug And Center Case
    G04174708Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Thread the oil pressure check plug in 1 or 2 pitches and apply sealant to the oil pressure check plug threads. Tighten to the specified torque. Refer to , "COMPONENTS ".
    CAUTION: Do not reuse oil pressure check plug.
  21. Install the snap ring to the clutch hub using suitable tool.
    CAUTION: Do not reuse snap ring.
    Fig 21: Installing Snap Ring To Clutch Hub
    G04174709Courtesy of NISSAN MOTOR CO., U.S.A.
  22. Apply petroleum jelly to the needle bearing, and install the needle bearing, spacer, clutch drum and clutch hub to the mainshaft.
    Fig 22: Identifying Needle Bearing, Spacer, Clutch Drum And Clutch Hub
    G04174710Courtesy of NISSAN MOTOR CO., U.S.A.
  23. Install the snap ring to the mainshaft.
    CAUTION: Do not reuse snap rings.
    Fig 23: Installing Snap Ring To Mainshaft
    G04174711Courtesy of NISSAN MOTOR CO., U.S.A.
  24. Apply ATF each plate, then install them into the clutch drum as shown.
    Fig 24: Installing Plate Into Clutch Drum
    G04174712Courtesy of NISSAN MOTOR CO., U.S.A.
  25. Install the return spring assembly into the clutch hub.
    Fig 25: Installing Return Spring Assembly Into Clutch Hub
    G04174713Courtesy of NISSAN MOTOR CO., U.S.A.
  26. Install the press flange by aligning the notches to the clutch hub as shown.
    Fig 26: Identifying Press Flange
    G04174714Courtesy of NISSAN MOTOR CO., U.S.A.
  27. Press the press flange to install snap ring into snap ring groove on mainshaft using Tools.

    Tool number A: ST22452000 (J-34335) 

    B: ST30911000 ( - ) 

    C: KV31103300 ( - ) 

    CAUTION: Do not reuse snap ring.
    Fig 27: Pressing Press Flange
    G04174715Courtesy of NISSAN MOTOR CO., U.S.A.
  28. Install the snap ring to the mainshaft using suitable tool.
    CAUTION: Do not reuse snap ring.
    Fig 28: Installing Snap Ring To Mainshaft Using Tool
    G04174716Courtesy of NISSAN MOTOR CO., U.S.A.
  29. Apply ATF to the thrust needle bearing and install it on the press flange.
    Fig 29: Identifying Thrust Needle Bearing On Press Flange
    G04174717Courtesy of NISSAN MOTOR CO., U.S.A.
  30. Install the snap ring to the main shaft.
    CAUTION: Do not reuse snap ring.
    Fig 30: Identifying Snap Ring
    G04174718Courtesy of NISSAN MOTOR CO., U.S.A.
  31. Install the mainshaft rear bearing to the center case using Tool.

    Tool number: ST15310000 (J-25640-B) 

    Fig 31: Installing Mainshaft Rear Bearing To Center Case Using Tool
    G04174719Courtesy of NISSAN MOTOR CO., U.S.A.
  32. Install the mainshaft assembly using a press.
    • Press the mainshaft into the center case using Tools.

      Tool number A: ST30911000 ( - ) 

      B: ST33052000 ( - ) 

    Fig 32: Identifying Mainshaft Assembly
    G04174720Courtesy of NISSAN MOTOR CO., U.S.A.
  33. Install the C-rings to the mainshaft.
    Fig 33: Installing C-Rings To Mainshaft
    G04174721Courtesy of NISSAN MOTOR CO., U.S.A.
  34. Set the washer holder on the mainshaft, and secure it with a snap ring.
    CAUTION: Do not reuse snap ring.
    Fig 34: Setting Washer Holder On Mainshaft And Securing With Snap Ring
    G04174722Courtesy of NISSAN MOTOR CO., U.S.A.
  35. Apply petroleum jelly to the stem bleeder and install it to the center case.
    Fig 35: Identifying Stem Bleeder
    G04174723Courtesy of NISSAN MOTOR CO., U.S.A.
  36. Apply ATF to the seal ring and install it to the main oil pump cover.
    CAUTION: Do not reuse seal ring.
    Fig 36: Identifying Seal Ring And Main Oil Pump Cover
    G04174724Courtesy of NISSAN MOTOR CO., U.S.A.
  37. Install the inner gear and outer gear in the main oil pump housing. Then, measure the side clearance. Refer to , "MAIN OIL PUMP ".
    Fig 37: Measuring Side Clearance
    G04174725Courtesy of NISSAN MOTOR CO., U.S.A.
  38. Install the main oil pump housing, outer gear and inner gear to the center case.
    Fig 38: Installing Main Oil Pump Housing, Outer Gear And Inner Gear To Center Case
    G04174726Courtesy of NISSAN MOTOR CO., U.S.A.
  39. Install the main oil pump cover to the center case, and tighten to the specified torque. Refer to , "COMPONENTS ".
    Fig 39: Identifying Main Oil Pump Cover
    G04174727Courtesy of NISSAN MOTOR CO., U.S.A.
  40. Remove all the sealant from the switch mounting area and inside the center case.
    CAUTION: Remove old sealant adhering to mounting surfaces. Also remove any moisture, oil, or foreign material adhering to application and mounting surfaces.
  41. Thread the ATP switch and neutral-4LO switch in one to two pitches and apply sealant to the threads of the switches. Tighten to the specified torque. Refer to , "COMPONENTS ".
    NOTE:
    • Neutral-4LO switch harness connector is gray.
    • ATP switch harness connector is black.
    Fig 40: Identifying Sealant Applying Area Of ATP Switch And Neutral - 4LO Switch Threads
    G04174728Courtesy of NISSAN MOTOR CO., U.S.A.
  42. Install the front drive shaft rear bearing using Tools.

    Tool number A: KV40100621 (J-25273) 

    B: ST30032000 (J-26010-01) 

    Fig 41: Installing Front Drive Shaft Rear Bearing Using Tools
    G04174729Courtesy of NISSAN MOTOR CO., U.S.A.
  43. Install the front drive shaft to the front bearing using Tools.

    Tool number A: KV40100621 (J-25273) 

    B: ST30032000 (J-26010-01) 

    Fig 42: Installing Front Drive Shaft To Front Bearing Using Tools
    G04174730Courtesy of NISSAN MOTOR CO., U.S.A.
  44. Install the drive chain to the front drive shaft and clutch drum.
    CAUTION: Install drive chain by aligning identification marks to the rear as shown.
    Fig 43: Installing Drive Chain To Front Drive Shaft And Clutch Drum
    G04174731Courtesy of NISSAN MOTOR CO., U.S.A.
  45. Tap the front drive shaft while keeping it upright and press-fit the front drive shaft rear bearing.
    CAUTION: Do not tap drive chain.
  46. Install the front case assembly. Refer to , "FRONT CASE ".
  47. Install the rear case assembly. Refer to , "REAR CASE ".
    Fig 44: Tapping Front Drive Shaft
    G04174732Courtesy of NISSAN MOTOR CO., U.S.A.
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