Nissan Altima 2007-2012 Service Manual: Function diagnosis

M/T SYSTEM

System Diagram

CROSS-SECTIONAL VIEW

1. Transaxle case

2. 3rd input gear

3. 3rd-4th synchronizer hub

4. 3rd-4th coupling sleeve

5. 4th input gear

6. 5th input gear

7. 5th-6th synchronizer hub

8. 5th-6th coupling sleeve

9. 6th input gear

10. Input shaft rear bearing

11. Mainshaft rear bearing

12. 6th main gear

13. 5th main gear

14. 4th main gear

15. 3rd main gear

16. 2nd main gear

17. 1st-2nd synchronizer hub

18. 1st-2nd coupling sleeve

19. 1st main gear

20. Reverse main gear

21. Differential side bearing

22. Differential case assembly

23. Final gear

24. Speedometer drive gear

25. Mainshaft front bearing

26. Mainshaft

27. Input shaft

28. Input shaft front bearing

29. Clutch housing

30. Reverse idler shaft

31. Reverse idler gear (Front)

32. Reverse coupling sleeve

33. Reverse idler gear (Rear)

System Description

DOUBLE-CONE SYNCHRONIZER

Double-cone synchronizer is adopted for 3rd gear to reduce operating force of the shift lever.

TRIPLE-CONE SYNCHRONIZER

Triple-cone synchronizer are adopted for 1st and 2nd gears to reduce operating force of the shift lever.

REVERSE GEAR NOISE PREVENTION FUNCTION (SYNCHRONIZING METHOD)

Reverse gear can be matched smoothly in a structure by setting synchronizer hub (1) of reverse idler gear (5) [Rear], reverse coupling sleeve (2), reverse baulk ring (3), and reverse insert spring (4) to reverse idler gears, and letting reverse gear be synchronized.

6 : Reverse idler gear (Front)

    Symptom diagnosis
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