Inspection After Disassembly

Shift Rod Components

• Check the working face of the shift rod and fork for wear, partial wear, bending and other abnormality. If any is found, replace with a new one.
  Fig 1: Locating 2-4 And L-H Fork Working Face

  Courtesy of NISSAN NORTH AMERICA, INC.
• Measure the clearance between the shift fork and sleeve. If it is out of specification, replace it with a new one.

  Specification Refer to  "INSPECTION AND ADJUSTMENT "

  Fig 2: Measuring Clearance Between Shift Fork And Sleeve Using Feeler Gauge

  Courtesy of NISSAN NORTH AMERICA, INC.

Planetary Carrier

• Measure the end play of each pinion gear. If it is out of specification, replace the planetary carrier assembly with a new one.

  Pinion gear end play Refer to  "INSPECTION AND ADJUSTMENT "

  Fig 3: Checking End Play Of Pinion Gear (Planetary Carrier)

  Courtesy of NISSAN NORTH AMERICA, INC.
• Check the working face of each gear and bearing for damage, burrs, partial wear, dents and other abnormality. If any is found, replace the planetary carrier assembly with a new one.

Sun Gear

• Check if the oil passage of the sun gear assembly is clogged. For this, try to pass a 3.6 mm (0.142 in) dia. pin through the oil passage as shown.
• Check the sliding and contact surface of each gear and bearing for damage, burrs, partial wear, dents, and other abnormality. If any is found, replace the sun gear assembly with a new one.
  Fig 4: Checking Oil Passage Of Sun Gear Assembly Using Pin

  Courtesy of NISSAN NORTH AMERICA, INC.

Internal Gear

• Check the internal gear teeth for damage, partial wear, dents and other abnormality. If any is found, replace the internal gear with a new one.
  Fig 5: Locating Internal Gear Teeth Checking Area

  Courtesy of NISSAN NORTH AMERICA, INC.

Gears and Drive Chain

• Check the gear faces and shaft for wear, cracks, damage, and seizure.
• Check the surfaces which contact the sun gear, clutch drum, clutch hub, press flange, clutch piston and each bearing for damage, peel, partial wear, dents, bending, or other abnormal damage. If any is found, replace with a new one.
  Fig 6: Locating Checking Surfaces Of Gears And Drive Chain

  Courtesy of NISSAN NORTH AMERICA, INC.

  Bearing

• Make sure the bearings roll freely and are free from noise, pitting and cracks.
  Fig 7: Checking Bearings Rolling

  Courtesy of NISSAN NORTH AMERICA, INC.

Main Oil Pump

1. Check the inner and outer circumference, tooth face, and side-face of the inner and outer gears for damage or abnormal wear.
2. Measure the side clearance between the main oil pump housing edge and the inner and outer gears.
3. Make sure the side clearance is within specification. If the measurement is out of specification, replace the inner and outer gears with new ones as a set. Refer to "INSPECTION AND ADJUSTMENT ".

   Specification Refer to  "INSPECTION AND ADJUSTMENT "

   Fig 8: Checking Inner And Outer Circumference, Tooth Face And Side-Face Of Gears For Damage Or Abnormal Wear

   Courtesy of NISSAN NORTH AMERICA, INC.

Sub-oil Pump

1. Check the inner and outer circumference, tooth face, and side-face of the inner and outer gears for damage or abnormal wear.
2. Measure the side clearance between the sub oil pump housing edge and the inner and outer gears.
3. Make sure the side clearance is within specification. If the measurement is out of specification, replace the inner and outer gears with new ones as a set. Refer to "INSPECTION AND ADJUSTMENT ".

   Specification Refer to  "INSPECTION AND ADJUSTMENT "

   Fig 9: Measuring Side Clearance Between Sub Oil Pump Housing Edge And Inner And Outer Gears

   Courtesy of NISSAN NORTH AMERICA, INC.

Control Valve

• Check resistance between the terminals of the clutch pressure solenoid valve, 2-4WD shift solenoid valve, clutch pressure switch, line pressure switch and the transfer fluid temperature sensor. Refer to "COMPONENT INSPECTION " (clutch pressure solenoid valve), "COMPONENT INSPECTION " (2-4WD solenoid valve), "COMPONENT INSPECTION " (clutch pressure switch), "COMPONENT INSPECTION " (line pressure switch) and "COMPONENT INSPECTION " (transfer fluid temperature sensor).
  Fig 10: Identifying Clutch Pressure Solenoid Valve, Switches And Transfer Fluid Temperature Sensor

  Courtesy of NISSAN NORTH AMERICA, INC.
• Check the sliding faces of the control valves and plugs for abnormality. If any is found, replace the control valve assembly with a new one. Refer to "INSPECTION AND ADJUSTMENT ".
  CAUTION: Replace control valve body together with clutch return spring as a set.
  Fig 11: Identifying Control Valve Overall Length

  Courtesy of NISSAN NORTH AMERICA, INC.
• Check each control valve spring for damage or distortion. Also check its free length, outer diameter and wire diameter. If any damage or fatigue is found, replace the control valve body with a new one. Refer to "INSPECTION AND ADJUSTMENT ".
  CAUTION: Replace control valve body together with clutch return spring as a set.
  Fig 12: Identifying Control Valve Spring Dimensions

  Courtesy of NISSAN NORTH AMERICA, INC.

Clutch

• Check the drive plate facings and driven plate for damage, cracks or other abnormality. If any abnormalities are found, replace with a new one.
• Check the thickness of the drive plate facings and driven plate. Refer to "INSPECTION AND ADJUSTMENT ".
  CAUTION:

  • Measure facing thickness at 3 points to take an average.
  • Check all drive and driven plates.
  • Check return spring for damage or deformation.
  • Do not remove spring from plate.
    Fig 13: Identifying Thickness, Core Plate And Facing Of Drive Plate

    Courtesy of NISSAN NORTH AMERICA, INC.

Return Spring

• Check the stamped mark shown. Then, check that the free lengths, (include thickness of plate) are within specifications. If any abnormality is found, replace with a new return spring assembly of the same stamped number. Refer to "INSPECTION AND ADJUSTMENT ".
  Fig 14: Identifying Spring And Apring Mark On Spring Assembly

  Courtesy of NISSAN NORTH AMERICA, INC.