Disassembly and Assembly: Adjustment

Differential Side Bearing Preload

• When adjusting differential side bearing preload, select adjusting shim for differential side bearing. To select adjusting shim, measure clearance (L) between transaxle case and differential side bearing outer race. Refer to "AVAILABLE SHIMS ".
  CAUTION: Up to 2 adjusting shims can be selected.
• Calculate dimension (L) (thickness of adjusting shim) using the following procedure to satisfy specification of preload for differential side bearing.

  Preload :  Refer to "AVAILABLE SHIMS ".

  Dimension L = (L1 - L2) + Preload 

  L : Thickness of adjusting shim 

  L1 : Distance between transaxle case end face and mounting face of adjusting shim 

  L2 : Distance between differential side bearing outer race and clutch housing end face 

  Fig 1: Measuring Clearance Between Transaxle Case And Differential Side Bearing Outer Race

  Courtesy of NISSAN MOTOR CO., U.S.A.

1. Using a depth micrometer and straightedge, measure dimension (L1) between transaxle case end face and mounting face of adjusting shim.
2. Install differential side bearing outer race onto differential side bearing on final gear side. Holding lightly differential side bearing outer race horizontally by hand, rotate final gear five times or more (for smooth movement of bearing roller).
   Fig 2: Measuring Dimension (L1) Between Transaxle Case End Face And Mounting Face Of Adjusting Shim

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Using a depth micrometer and straightedge as shown in the figure, measure dimension (L2) between differential side bearing outer race and clutch housing end face.
   CAUTION: L2: Measure at 4 point by approximately 90 degrees and use the average value.
   Fig 3: Measuring Dimension (L2) Between Differential Side Bearing Outer Race And Clutch Housing End Face

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Install selected differential side bearing adjusting shim and then install differential side bearing outer race (transaxle case side) using Tool.

   Tool number : ST30720000 (J25405) 

   Fig 4: Installing Differential Side Bearing Outer Race (Transaxle Case Side) Using Tool

   Courtesy of NISSAN MOTOR CO., U.S.A.
   CAUTION: Replace differential side bearing and differential side bearing outer race as a set.

Reverse Idler Gear End Play

• When adjusting reverse idler gear end play, select adjusting shim for reverse idler gear. To select adjusting shim (1), measure clearance between transaxle case (2) and reverse idler gear (rear) (3). Refer to "AVAILABLE ADJUSTING SHIMS ".
  CAUTION: Only 1 adjusting shim can be selected.
• Calculate dimension (Q) (thickness of adjusting shim) using the following procedure to satisfy specification of end play for reverse idler gear.

  End play :  Refer to "AVAILABLE ADJUSTING SHIMS ".

  Dimension Q = (Q1 - Q2) - End play 

  Q : Thickness of adjusting shim 

  Q1 : Distance between transaxle case end face and mounting face of adjusting shim 

  Q2 : Distance between clutch housing end face and end face of reverse idler gear (rear) 

  Fig 5: Measuring Clearance Between Transaxle Case And Reverse Idler Gear

  Courtesy of NISSAN MOTOR CO., U.S.A.

1. Using a depth micrometer and straightedge, measure dimension (Q1) between transaxle case end face and mounting face of adjusting shim.
   Fig 6: Measuring Dimension (Q1) Between Transaxle Case End Face And Mounting Face Of Adjusting Shim

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Using a depth micrometer and straightedge as shown in the figure, measure dimension (Q2) between clutch housing (1) end face and end face of reverse idler gear (rear) (2).
   CAUTION: Q2: Measure at 4 point by approximately 90 degrees and use the average value.
3. Install selected reverse idler gear adjusting shim onto reverse idler gear (rear).
   Fig 7: Measuring Dimension (Q2) Between Clutch Housing End Face And End Face Of Reverse Idler Gear

   Courtesy of NISSAN MOTOR CO., U.S.A.

Input Shaft End Play

• When adjusting input shaft end play, select adjusting shim for input shaft rear bearing. To select adjusting shim, measure clearance between transaxle case and input shaft rear bearing. Refer to "AVAILABLE ADJUSTING SHIMS ".
  CAUTION: Only 1 adjusting shim can be selected.
• Calculate dimension (O) (thickness of adjusting shim) using the following procedure to satisfy specification of end play for input shaft rear bearing.

  End play :  Refer to "AVAILABLE ADJUSTING SHIMS ".

  Dimension O = (O1 - O2) - End play 

  O : Thickness of adjusting shim 

  O1 : Distance between transaxle case end face and mounting face of adjusting shim 

  O2 : Distance between clutch housing end face and end face of input shaft rear bearing 

  Fig 8: Measuring Clearance Between Transaxle Case And Input Shaft Rear Bearing

  Courtesy of NISSAN MOTOR CO., U.S.A.

1. Using a depth micrometer and straightedge, measure dimension (O1) between transaxle case end face and mounting face of adjusting shim.
   CAUTION: O1: Measure at 4 point by approximately 90 degrees and use the average value.
   Fig 9: Measuring Dimension (O1) Between Transaxle Case End Face

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Using a depth micrometer and straightedge as shown in the figure, measure dimension (O2) between clutch housing end face and end face of input shaft rear bearing.
   CAUTION: (O2): Measure at 4 point by approximately 90 degrees and use the average value.
3. Install selected input shaft rear bearing adjusting shim onto input shaft.
   Fig 10: Measuring Dimension (O2) Between Clutch Housing End Face And End Face Of Input Shaft Rear Bearing

   Courtesy of NISSAN MOTOR CO., U.S.A.

Striking rod End Play

• When adjusting striking rod end play, select adjusting shim (1) for striking rod (2). To select adjusting shim, measure clearance between transaxle case (3) and striking rod shim (4). Refer to "AVAILABLE ADJUSTING SHIMS ".
  CAUTION: Only 1 adjusting shim can be selected.
• Calculate dimension (R) (thickness of adjusting shim) using the following procedure to satisfy specification of end play for striking rod.

  End play :  Refer to "AVAILABLE ADJUSTING SHIMS ".

  Dimension R = (R1 - R2) - End play 

  R : Thickness of adjusting shim 

  R1 : Distance between transaxle case end face and mounting face of adjusting shim 

  R2 : Distance between clutch housing end face and end face of striking rod shim 

  Fig 11: Measuring Clearance Between Transaxle Case And Striking Rod Shim

  Courtesy of NISSAN MOTOR CO., U.S.A.

1. Using a depth micrometer (A) and straightedge (B), measure dimension (R1) between transaxle case (1) end face and mounting face of adjusting shim.
   CAUTION: R1: Measure at 4 point by approximately 90 degrees and use the average value.
   Fig 12: Measuring Dimension (R1) Between Transaxle Case End Face And Mounting Face Of Adjusting Shim

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Using a depth micrometer (A) and straightedge (B) as shown in the figure, measure dimension (R2) between clutch housing (1) end face and end face of striking rod shim (2).
   CAUTION:

   • R2: Measure at 4 point by approximately 90 degrees and use the average value.
   • When measuring, be careful for the inclination of striking rod assembly and striking rod shim.
3. Install selected striking rod adjusting shim onto striking rod assembly.

Mainshaft End Play

Fig 13: Measuring Dimension (R2) Between Clutch Housing End Face And End Face Of Striking Rod Shim

Courtesy of NISSAN MOTOR CO., U.S.A.

• When adjusting mainshaft end play, select adjusting shim (1) for mainshaft rear bearing (2). To select adjusting shim, measure clearance (M) between transaxle case (3) and dummy adjusting shim (4) on mainshaft rear bearing. Refer to "AVAILABLE ADJUSTING SHIMS ".
  Fig 14: Measuring Clearance (M) Between Transaxle Case And Dummy Adjusting Shim On Mainshaft Rear Bearing

  Courtesy of NISSAN MOTOR CO., U.S.A.
  CAUTION: Only 1 adjusting shim can be selected.
• Calculate dimension (P) (thickness of adjusting shim) using the following procedure to satisfy specification of end play for mainshaft rear bearing.

  End play :  Refer to "AVAILABLE ADJUSTING SHIMS ".

  Dimension P = (M + N) - End play 

  P : Thickness of adjusting shim 

  M : Distance between dummy adjusting shim on mainshaft rear bearing end face and transaxle case end face 

  N* : Thickness of dummy adjusting shim 

  *: Refer to the latest parts information to use a dummy adjusting shim of which part number is the thinnest in thickness. Refer to "AVAILABLE ADJUSTING SHIMS ".

1. Install transaxle case following the procedures below.
   1. Temporarily install snap ring of mainshaft rear bearing into transaxle case.
      CAUTION: Do not reuse snap ring.
      Fig 15: Installing Snap Ring Of Mainshaft Rear Bearing Into Transaxle Case

      Courtesy of NISSAN MOTOR CO., U.S.A.
   2. Install dummy adjusting shim (1) to mainshaft assembly.
      Fig 16: Installing Dummy Adjusting Shim To Mainshaft Assembly

      Courtesy of NISSAN MOTOR CO., U.S.A.
   3. With shifter lever A (1) held in the position shown in the figure, temporarily assemble transaxle case to clutch housing.
      CAUTION: Do not damage striking rod oil seal.
      NOTE: Make sure to hold shifter lever A in the position shown in the figure. Otherwise transaxle case cannot be installed to clutch housing.
      Fig 17: Locating Shifter Lever A Held In Position

      Courtesy of NISSAN MOTOR CO., U.S.A.
   4. While rotating shifter lever A (1) in the direction of the arrow shown in the figure, assemble transaxle case to clutch housing.
      Fig 18: Identifying Shifter Lever Position

      Courtesy of NISSAN MOTOR CO., U.S.A.
   5. Accessing from the bore plug hole, expand snap ring at mainshaft rear bearing so that the ring catches the periphery of mainshaft rear bearing.
   6. Temporarily tighten transaxle case bolts.
      Fig 19: Identifying Transaxle Case Bolts

      Courtesy of NISSAN MOTOR CO., U.S.A.
2. Shift the shifter lever A to 2nd gear position.
   NOTE:

   • The 2nd gear position is attained when shifter lever A (1) is in the position shown in the figure.
     Fig 20: Shifting Shifter Lever A To 2nd Gear Position

     Courtesy of NISSAN MOTOR CO., U.S.A.
   • When transaxle is shifted to the 2nd gear position, mainshaft assembly (1) is lifted.
     Fig 21: Identifying Mainshaft Assembly

     Courtesy of NISSAN MOTOR CO., U.S.A.
3. Seat snap ring in the groove on mainshaft rear bearing. If snap ring is not seated in the groove on mainshaft rear bearing, remove transaxle case and repeat the procedure 1 from step  c.
4. Shift the shifter lever A to 1st gear position, and then shift it to 2nd gear position. Repeat 3 times.
   NOTE:

   • The mainshaft rear bearing position will be stabilized by shifting between 1st gear position and 2nd gear position alternately.
   • The 1st gear position is attained when shifter lever A (1) is in the position shown in the figure.
     Fig 22: Shifting Shifter Lever A To 1st Gear Position

     Courtesy of NISSAN MOTOR CO., U.S.A.
   • When transaxle is shifted to the 1st gear position, mainshaft assembly (1) is declined.
     Fig 23: Location Of Mainshaft Assembly

     Courtesy of NISSAN MOTOR CO., U.S.A.
5. Set the dial indicator (A) to dummy adjusting shim (1) through the bore plug hole.
   Fig 24: Setting Dial Indicator To Dummy Adjusting Shim

   Courtesy of NISSAN MOTOR CO., U.S.A.
6. Shift the shifter lever A (1) to 2nd gear position (A), and then rotate it in the direction of the arrow (C) shown in the figure until it stops. Using this position as the reference point, measure the amount of movement when shifting shifter lever A to 1st gear position (B) and rotating it in the direction of the arrow (D) shown in the figure until it stops. This measurement is the (M) dimension.
7. When measurement (M) is 0 - 0.06 mm (0 - 0.0024 in), adjustment terminates, and the dummy adjusting shim becomes regular adjusting shim. Select adjusting shim from the computed expressions when measurement (M) is over 0.06 mm (0.0024 in).
   Fig 25: Shifting Shifter Lever A To 2nd Gear Position

   Courtesy of NISSAN MOTOR CO., U.S.A.