1 / 119

OBJECTIVES

OBJECTIVES. After studying Chapter 10, the reader should be able to: Describe some of the transmissions used in domestic vehicles. Describe some of the transmissions used in the more popular import vehicles. Explain the operation of a particular transmission.

colin
Download Presentation

OBJECTIVES

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. OBJECTIVES After studying Chapter 10, the reader should be able to: • Describe some of the transmissions used in domestic vehicles. • Describe some of the transmissions used in the more popular import vehicles. • Explain the operation of a particular transmission. • Identify which transmission is used in a particular vehicle. • Identify a particular transmission.

  2. INTRODUCTION • In the following sections, we will briefly describe the more common transmission and transaxles. • They will be described by manufacturer and cross-referenced by the gear train types described in Chapter 5. • A particular transmission design may have many small differences. • In any single year, there may be many versions of the same transmission depending on the application.

  3. FIGURE 10-1 When a vehicle is driving straight, the differential gears rotate as a unit; equal load keeps the pinion gears stationary on the mate shaft (a). An unequal load causes the pinion gears to rotate on the mate shaft so one axle can turn faster than the other (b). (Courtesy of Chrysler Corporation) INTRODUCTION • Transaxles • A transaxle is a combination of a transmission, either standard or automatic, and a final drive assembly.

  4. INTRODUCTION • There are essentially four types of final drive and differential combinations used in transaxles: • The first type uses helical gears and an intermediate/idler gear or shaft to transfer power from the transmission planetary gear assembly to the differential case • The second type uses a planetary gearset mounted to the output of the transmission gearset for the final drive reduction gears • The third type uses a planetary gear final drive that is driven by a chain and sprockets from the transmission section • Some FWD vehicles use an engine mounted lengthwise in the vehicle so the crankshaft and the transaxle shafts run longitudinal (fore and aft) instead of transverse or lateral (side to side) relative to the vehicle.

  5. FIGURE 10-2 The 41TE transaxle uses a set of helical final drive gears (a) to transfer power from the transfer shaft to the differential and drive shafts. A set of helical transfer gears (b) is used to transfer power from the transmission gears to the transfer shaft. (Courtesy of Chrysler Corporation) INTRODUCTION

  6. FIGURE 10-3 An exploded view from a parts catalog of a Ford CD4E shows a chain (3201) to transfer power from the transmission gearset to the final drive and differential. (Courtesy of Aceomatic Recon) INTRODUCTION

  7. FIGURE 10-4 The Chrysler 42LE transaxle uses hypoid final drive gears. Note the transfer chain to connect the transmission gearset to the final drive pinion gear. (Courtesy of Chrysler Corporation) INTRODUCTION

  8. FIGURE 10-5 The overall gear ratio in a transaxle is a product of multiplying the transmission gear ratio by the final drive ratio. This should be multiplied by any transfer gear/chain ratio. INTRODUCTION

  9. FIGURE 10-6 A THM 3254L transmission is mounted alongside of the engine. The front axle assembly is attached directly to the output shaft (lower left) to drive the front wheels. (Reprinted with permission of General Motors) WERE THE THM 325, 325-4L, AND 425 MODELS TRANSMISSIONS OR TRANSAXLES?

  10. INTRODUCTION • New-Generation Transmissions and Transaxles • Vehicle manufacturers are working to improve vehicle efficiency, performance, and fuel mileage. • Transmissions and transaxles are being introduced that are smaller, lighter, and have additional gear ranges.

  11. CHRYSLER • Torqueflites are three-speed, Simpson gear train transmissions of two basic sizes. • The A-904 was introduced as a Torqueflite 6 (TF6) in 1960 for use with 6-cylinder engines. • The A-727 was introduced in 1962 for use with 8-cylinder engines. • The A-727 is called the Torqueflite 8 (TF8).

  12. FIGURE 10-7 The gear ratios for Chrysler transmissions and transaxles. CHRYSLER

  13. CHRYSLER • Chrysler Rear Wheel Drive Transmissions • 30RH-32RH Transmissions • 36RH-37RH Transmissions • 40RH-42RH, 42RE-44RE Transmissions • 42RLE Transmission • 45RFE Transmission • 46RH-47RH, 46RE-47RE-48RE Transmissions • W5A580/722.6 Transmission

  14. FIGURE 10-8 This body decal identifies the transmission as well as other important features of this vehicle. (Courtesy of Chrysler Corporation) CHRYSLER

  15. FIGURE 10-9 Older Torqueflite transmissions can be identified by a code stamped in the case (a). Newer units use a label attached to the case (b). (Courtesy of Chrysler Corporation) CHRYSLER

  16. FIGURE 10-10 A Chrysler 4WD, 44RE (at the top) and a 2WD, 46RE can be identified by the pan shape and extension housing (a). Some transmissions can be identified by the shape of the pan gasket (b). (Courtesy of Chrysler Corporation) CHRYSLER

  17. FIGURE 10-11 A cutaway view of a 30RH (A940) transmission with a clutch and band application chart. (Courtesy of Chrysler Corporation) CHRYSLER

  18. FIGURE 10-12 A cutaway view of a 42RH transmission; note that the overdrive unit attaches to the rear of the main transmission section. (Courtesy of Chrysler Corporation) CHRYSLER

  19. FIGURE 10-13 A cutaway view of a 45RFE transmission showing the three driving clutches, the three reaction clutches, and the complex gearset. (Courtesy of Chrysler Corporation) CHRYSLER

  20. FIGURE 10-14 This clutch chart shows the active control devices for each gear range of a 45RFE transmission. CHRYSLER

  21. CHRYSLER • Chrysler Transaxles • Chrysler transaxles can be identified by the transmission code on the vehicle body plate. • When the transaxle is out of the vehicle, it can be identified by an identification tag on the case • 30TH-31TH Transaxle • 41TE Transaxle • 42LE Transaxle • 62TE Transaxle

  22. FIGURE 10-15 The 41TE transaxle can be identified by an identification label attached to the converter housing and by the shape of the case with the solenoid sound shield, transfer gear cover, and strengthening ribs over the final drive section. (Courtesy of Chrysler Corporation) CHRYSLER

  23. FIGURE 10-16 A cutaway view of a 30TH three-speed transaxle. (Courtesy of Chrysler Corporation) CHRYSLER

  24. FIGURE 10-17 A cutaway view of a 41TE transaxle with a clutch application chart. (Courtesy of Chrysler Corporation) CHRYSLER

  25. FORD MOTOR COMPANY • Ford now uses an alphanumeric code. • Like other vehicle manufacturers, Ford transmissions are manufactured all over the world. • Some are from Ford-owned production lines in the United States and France; others are produced by manufacturers in Japan (JATCO and Aisin [AW]) and in Europe (ZF).

  26. FIGURE 10-18 The gear ratios for Ford Motor Company transmissions and transaxles. FORD MOTOR COMPANY

  27. FIGURE 10-19 This body decal identifies the transmission and other important features of this vehicle. The transmission type U (arrow) indicates a 4R70W transmission. FORD MOTOR COMPANY • Ford Motor Company Rear Wheel Drive Transmissions

  28. FIGURE 10-20 A 4F50N (AX4N) transaxle can be identified by the tag attached to the top of the case, the stamping on the valve body cover, and the overall shape of the unit. FIGURE 10-21 Many technicians use the shape of the oil pan gasket and filter to identify a transmission. FORD MOTOR COMPANY

  29. FORD MOTOR COMPANY • 4R44E Transmission • 5R55E Transmission • 4R70W Transmission • 4R100/E4OD Transmission • 5R110W Transmission • 6R60, 6R80 Transmission • C6 Transmission • JATCO L3N71B • FM, FMX, HX, MX • Two Speed

  30. FIGURE 10-22 An exploded view of a 4R44E (A4LD) transmission. (Courtesy of Aceomatic Recon) FORD MOTOR COMPANY

  31. FIGURE 10-23 A cutaway view of a 4R100 (E40D) transmission. Note the mirror at the bottom showing the valve body. FORD MOTOR COMPANY

  32. FIGURE 10-24 An exploded view of a C4 and C5 transmission. (Courtesy of Aceomatic Recon) WERE THE C3, C4, AND C5 DIFFERENT?

  33. FIGURE 10-25 An exploded view of a C6 transmission. (Courtesy of Aceomatic Recon) FORD MOTOR COMPANY

  34. FORD MOTOR COMPANY • Ford Motor Company Transaxles • Ford transaxles can be identified by the vehicle’s production label located on the driver’s side door pillar. • When the transaxle is out of the vehicle, it can be identified by a service identification tag attached to the case.

  35. FORD MOTOR COMPANY • 4F50N/AX4N Transaxle • AX4S Transaxle • CD4E Transaxle • F4E Transaxle • 4F20E Transaxle • 4F27E Transaxle • 6F50, 6F35 • ATX Transaxle

  36. FIGURE 10-26 An exploded view of the 4F50N (AX4N) gear train. (Courtesy of Aceomatic Recon) FORD MOTOR COMPANY

  37. FIGURE 10-27 An exploded view of the Ford AX4S gear train. Note the similarity to the AX4N gear train with the addition of a low sprag and a direct roller clutch. (Courtesy of Aceomatic Recon) FORD MOTOR COMPANY

  38. GENERAL MOTORS CORPORATION • Like other manufacturers, General Motors uses transmissions produced in various parts of the world, and supplies other manufacturers with General Motors transmissions. • The most notable are Rolls Royce and Jaguar. • General Motors previously identified its transmissions as Turbo Hydra-Matic (THM) followed by an alphanumeric code that described the relative size of the unit. • Currently, General Motors uses an alphanumeric model designation system

  39. FIGURE 10-28 The gear ratios for General Motors transmissions. GENERAL MOTORS CORPORATION

  40. GENERAL MOTORS CORPORATION • General Motors Rear Wheel Drive Transmissions • General Motors has produced many different automatic transmissions. • Six popular, out-of-production transmissions will also be described in this text. • General Motors transmissions can be identified by the identification tag on the vehicle. • When the transmission is out of the vehicle, it can be identified by a service identification tag attached to the case

  41. FIGURE 10-29 General Motors transmissions (a) and transaxles (b) can be identified by a label or tag on the case. (Reprinted with permission of General Motors) GENERAL MOTORS CORPORATION

  42. FIGURE 10-30 The shape of the pan gasket can be used for a general identification of a transmission or transaxle. GENERAL MOTORS CORPORATION

  43. GENERAL MOTORS CORPORATION • 3L30 Transmission • 4L30-E Transmission • 4L60-E Transmission • 4L80-E Transmission • THM 200, THM 200C, THM 325 Transmissions • THM 200-4R, THM 325-4L Transmissions • THM 250, THM 250C Transmissions • THM 350, THM 350C, THM 375B Transmissions • 3L80, THM 400, THM 375, THM 425 Transmissions

  44. GENERAL MOTORS CORPORATION • Two-Mode Hybrid Transmission. • 6L80E Transmission • 6L50E Transmission • Allison 1000 and 2000 Transmissions • Ravigneaux Gear Train

  45. FIGURE 10-31 A 3L30 transmission. (Courtesy of Slauson Transmission Parts,www.slauson.com) GENERAL MOTORS CORPORATION

  46. FIGURE 10-32 A cutaway view of a 4L60-E transmission showing the internal parts. (Reprinted with permission of General Motors) GENERAL MOTORS CORPORATION

  47. FIGURE 10-33 4L80E transmission. (Courtesy of Slauson Transmission Parts,www.slauson.com) GENERAL MOTORS CORPORATION

  48. FIGURE 10-34 A THM 200-4R transmission. It has the appearance of a stretch THM 200C. (Courtesy of Slauson Transmission Parts, www.slauson.com) GENERAL MOTORS CORPORATION

  49. FIGURE 10-35 A THM 325 transmission. A 325-4L will have a larger chain cover to enclose the overdrive gearset. (Courtesy of Slauson Transmission Parts, www.slauson.com) GENERAL MOTORS CORPORATION

More Related