Hydraulic System Of The Automatic Transmission

HYDRAULIC SYSTEM OF THE AUTOMATIC TRANSMISSION

PURPOSE

Hydraulic pressure from the hydraulic slave circuits actuate the planetary holding devices (clutches and brake bands).

The hydraulic system controls the shifting pattern of the transmission. This is done by switching hydraulic pressure to programmed combinations of the planetary holding devices based on vehicle speed and engine load indicators.

The hydraulic system circulates oil through a remote cooler to remove excess heat that is generated in the transmission and torque converter.

The hydraulic system provides a constant, fresh supply of oil to all critical wearing surfaces of the transmission.

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Article Pages
1. Drive Train Intro
2. Principles Of Torque
3. Fundamentals Of Gears
4. Types Of Gears
5. Gear Principles
6. Principle Of Gear Ratios
7. Principle Of Torque Ratios
8. Operation Of A Gear Train
9. The Construction And Operation Of A Planetary Gearset
10. Operating Principles Of A Planetary Gearset
11. Why Clutches Are Needed
12. Clutch Construction
13. Types Of Clutches
14. Clutch Operation
15. Clutch Maintenance
16. Introduction To Manual Transmissions
17. Types Of Manual Transmissions
18. Manual Transmission Construction
19. Manual Transmission Operation
20. The Powerflow In Manual Transmissions
21. Manual Transmission Lubrication
22. Manual Transmission Ventilation
23. Constant Mesh Transmissions
24. Synchromesh Transmissions
25. Power Take-Offs
26. Power Take-Offs Construction And Operation
27. Input Gear, Output Shaft and Shifter Fork
28. Inspecting The Transmission
29. Leaking Lubricants In A Manual Transmission
30. Leaking Seals In A Manual Transmission
31. Testing Transmissions For Malfunctions
32. Power Take-Off Inspecting And Testing
33. Automatic Transmission Introduction
34. Automatic Transmission Fundamentals
35. Drive Train Mechanisms
36. Drive Train Operation
37. The Drive Train Arrangements Of The Automatic Transmission
38. Simpson Drive Train
39. Hydraulic System Of The Automatic Transmission
40. Hydraulic Supply System
41. Torque Converter Feed Circuit
42. Range Control System
43. Vehicle Speed Versus Engine Loading
44. Transfer Case
45. Transfer Operation
46. The Construction And Operation Of Sprag Units

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