Differential bearing preload
1. The required procedure is the same as described in Chapter 11, noting the following differences, along with different preload and torque:
- (A) Forked tool number KV38106500
- (b) Thickness of required gaskets - measured value plus 0.40-0.46mm
- (With) Gaskets are available in thickness range 0.40-1.20 mm
Output shaft bearing preload
2. It is necessary to adjust the shaft bearing preload if the following parts were replaced during assembly:
- Output shaft
- Output vase bearings
- Clutch housing
- Transmission housing
3. Remove the left shaft bearing cup and all preload shims from the transmission housing. Install the outer ring without spacers.
4. Clean the mating surfaces of the transmission housing and clutch housing, and if necessary, remove the outer ring of the right shaft bearing from the clutch housing.
5. Install the output shaft to the transmission housing, place the right bearing outer race on the end of the shaft.
6. Prepare a steel ruler at least 50mm wide and place it across the mating surface of the transmission housing. Measure the distance from the top surface of the edge of the ruler to the top (that is, the right one) end of the bearing outer ring. Repeat the measurement at sin points around the outer ring and calculate the average. Subtract the average value from the ruler width to obtain the distance the outer ring protrudes outward from the mating surface of the transmission housing; write this size as 'A' (Pic. 6.42).
Pic. 6.42. Output Shaft Bearing Preload - Dimension 'A'
7. Measure the distance from the mating surface of the clutch housing to the shoulder in the output shaft bearing bore against which the bearing outer race is installed. Repeat the measurement at three points around the shoulder and calculate the average; write this size as 'B' (Pic. 6.43).
Pic. 6.43. Output Shaft Bearing Preload - Dimension 'B'
8. Subtract 'A' from 'B' to get 'C'.
9. The required thickness of the shims is 'C' plus 0.25 - 0.31 mm and should be composed of one thick or two thin shims. Gaskets are available through Nissan dealers in a thickness range of 0.40mm - 1.20mm.
10. Gasket (ki) must be installed between the left outer race of the bearing and the transmission housing.
11. The preload setting can be checked by measuring the overall transmission torque. See Chapter 14, paragraph 53 and Chapter 10, paragraph 63.
Side play of input shaft
12. It is necessary to adjust the lateral play of the shaft if the following parts were replaced during assembly:
- Entrance vase
- Entrance vase bearings
- Clutch housing
- Transmission housing
Pic. 6.44. Measuring input shaft side play
13. Install the input shaft into the clutch housing, using heavy grease to secure the lubrication channel at the left end.
14. Remove the input shaft adjusting shims from the transmission housing, install it in the clutch housing and tighten the fastening bolt with the tightening force regulated by the Specification.
15. Attach the gauge to the clutch housing so that the lateral play of the input shaft can be measured.
16. The thickness of the shims required will be equal to the measured side play minus 0-0.06 mm and should be made up of one thick shim (where possible) or two thin pads. Gaskets are available through Nissan dealers in a thickness range of 0.40mm - 1.20mm.
17. Gasket (ki) must be installed between the left bearing outer race and the transmission housing.
18. Side play can be checked with a meter immediately after assembling the transmission. A slight lateral play of up to a maximum of 0.06 mm is allowed, check that there is no preload on the shaft bearings.