3. Clutches Auto 3/4 Mr. Saunders GO

4. 12/2001VHS AUTO3 Who needs a clutch?

5. 12/2001VHS AUTO4 Not me!

6. 12/2001VHS AUTO5 Big Daddy Don Garlits

7. 12/2001VHS AUTO6 Clutches Lets read together starting on page # Black book Chapter 44

8. 12/2001VHS AUTO7 Clutches 44-1 Purpose of the Clutch Someone read please

9. 12/2001VHS AUTO8 Purpose of the Clutch Allows engine to be disengaged from transmission for shifting gears and coming to a stop Allows smooth engagement of engine to transmission

10. NOT !

11. 12/2001VHS AUTO10 Clutches 44-2 Location of the Clutch Someone read please Rear wheel drive Front engine Rear engine Mid engine Front wheel drive

12. 12/2001VHS AUTO11 Clutches 44-3 Construction of the Clutch Read along with me

13. 12/2001VHS AUTO12 Clutches 44-3 Construction of the Clutch Coil spring pressure plate (cover and pressure plate) READ ON

14. 12/2001VHS AUTO13 Clutches 44-3 Construction of the Clutch Splines to input shaft Of transmission Clutch Disk or Friction Disk READ ON

15. 12/2001VHS AUTO14 Pilot Bushing or bearing READ ON

16. 12/2001VHS AUTO15 Clutches 44-3 Construction of the Clutch Flywheel bolts to crankshaft Pressure plate & cover bolt to flywheel If there is a chance you will be reusing pressure plate, make alignment marks to flywheel to maintain proper balance BEFORE removal When unbolting pressure plate from the flywheel, remove bolts evenly as not to bend the cover. REMEMBER, this is under high spring pressure.

17. 12/2001VHS AUTO16 Flywheels Add weight to crank for non-power strokes Has ring-gear for cranking engine (usually replaceable)

18. 12/2001VHS AUTO17 Flywheels Hot spots

19. 12/2001VHS AUTO18 Flex plates Ring gear for automatic transmissions Light weight, bolts crank to torque converter Sometimes too light weight

20. 12/2001VHS AUTO19 Clutches 44-4 Operation of the Clutch Someone read please

21. 12/2001VHS AUTO20 Clutches Bolted to Crank (friction disk) splined to transmission Input shaft (throw-out bearing T/O bearing) allows to push on rotating clutch fingers Bolted to flywheel - Applies the spring force to clamp the friction disk to the flywheel (clutch fork) pushes T/O bearing to release rotating clutch Pilot bushing or bearing in center of flywheel or crankshaft, supports the end of input shaft

22. 12/2001VHS AUTO21 Pressure Plate Pivots T/O bearing Moves pressure Plate right Releases friction disk from flywheel

23. 12/2001VHS AUTO22 Clutch terms Clutch disengaged Clutch pedal is in or down Clutch engaged Clutch pedal is out or up What would it mean if someone said the clutch pedal Is engaged? Make sure you know if you are talking about the clutch or the clutch pedal !!!

24. 12/2001VHS AUTO23 Throw out Bearing (release bearing) Slides on transmission input shaft bearing retainer READ ON

25. 12/2001VHS AUTO24 Clutches READ ON

26. 12/2001VHS AUTO25 Throw out bearings Most need clearance between fingers of pressure plate so it isn’t spinning all the time (free play) Riding the clutch (foot resting on pedal) Pushes T/O bearing into pressure plate fingers Causes it spin constantly Wearing it out too soon Releases some of clutch spring pressure Causing clutch to slip

27. 12/2001VHS AUTO26 Slipping clutch ?

28. 12/2001VHS AUTO27 Free play Clearance between T/O bearing and clutch fingers Measured at clutch pedal Usually 1 ½ inches of free movement Goes away as clutch disk wears thinner Some manufactures use T/O bearings that always ride on the clutch fingers Usually self adjusting READ ON

29. 12/2001VHS AUTO28 www.howstuffworks.com web site In the search, type in “Clutch”

30. 12/2001VHS AUTO29 44-5 Clutch Linkage Someone read please

31. 12/2001VHS AUTO30 44-5 Clutch Linkage Can be very complicated Have the right amount of movement and direction without too much pedal pressure Wear Motor mounts Spring to pull T/O bearing away Has to be lubricated

32. 12/2001VHS AUTO31 Over-center spring Helps pull up on clutch pedal Helps pull down on clutch pedal

33. 12/2001VHS AUTO32 Clutch fork T/O bearing hooks here Fulcrum point What would cause this?

34. 12/2001VHS AUTO33 Skip to 44-10 Hydraulic clutch Some one read please

35. 12/2001VHS AUTO34 Hydraulic clutch Uses master cylinder and slave cylinder Uses brake fluid Must be bleed

36. 12/2001VHS AUTO35 Hydraulic clutch No complicated linkage Can easily control mechanical advantage with piston sizes Self lubricating No motor mount problems Service just like you would hydraulic brakes

37. 12/2001VHS AUTO36 Slave cylinder Some are adjustable for free-play and some not

38. 12/2001VHS AUTO37 Ford’s slave cylinders Some are part of T/O bearing Can’t change without pulling tranny (inside bellhousing) Can be a royal pain to bleed

39. 12/2001VHS AUTO38 Cable clutch No complicated linkage Flexibility No motor mount problems

40. 12/2001VHS AUTO39 Linkage/Cable/Hydraulic controls

41. 12/2001VHS AUTO40 Back to 44-6 Friction disks Someone read please

42. 12/2001VHS AUTO41 Friction disks Often made of asbestos Must be put in only one way Usually marked Clutch won’t release if wrong

43. 12/2001VHS AUTO42 Friction disks Cushion springs Waved metal between clutch half's Dampen clutch engagement

44. 12/2001VHS AUTO43 Friction disks Torsional springs Can be spring or rubber Dampen power impulses from crankshaft

45. 12/2001VHS AUTO44 Torsional Springs Has pins to limit amount of twist. Springs try to keep it centered between pins. Springs sometimes get weak and start rattling or fall out

46. 12/2001VHS AUTO45 Clutch disks Friction material isn’t very thick. Minimum thickness around.012”

47. 12/2001VHS AUTO46 Clutch disks Well, uhh….. Dad, I only got on it a little bit Does side stepping the clutch at 6000 RPM count?

48. 12/2001VHS AUTO47 44-7 Types of Clutches Someone read please

49. 12/2001VHS AUTO48 Types of Clutches (pressure plates) Coil spring 9 spring 12 spring 3 fingers for T/O bearing to push on

50. 12/2001VHS AUTO49 44-8 Diaphragm-Spring Clutches Someone read please

51. 12/2001VHS AUTO50 Diaphragm-Spring Clutches

52. 12/2001VHS AUTO51 44-9 Centrifugal Clutch Someone read please

53. 12/2001VHS AUTO52 Centrifugal Clutch The faster the RPM, the harder the clutch disk is squeezed

54. 12/2001VHS AUTO53 Centrifugal Clutch T/O bearing Pressure plate

55. 12/2001VHS AUTO54 Centrifugal Clutch

56. 12/2001VHS AUTO55 44-11 Clutch safety switch Someone read please

57. 12/2001VHS AUTO56 Clutch Safety Switch Prevents from cranking with clutch engaged Some standard transmissions won’t let you take the key out and lock the steering column with out the transmission in reverse Prevents steering lock while moving forward

58. 12/2001VHS AUTO57 Think Do you know the names of the clutch parts and what they do? How would motor mounts affect the clutch? What pulls the clutch linkage back? What would happen if free-play is incorrect? How would crankshaft end-play affect the clutch? What if the pilot bushing was worn, or seized up? What happens to free-play with disk wear?

59. 12/2001VHS AUTO58 CDX Review Disk 15 Clutches Clutch Components Principals of a clutch Single plate clutches Multi-plate clutches Operating mechanisms

60. 12/2001VHS AUTO59 CDX Review

61. 12/2001VHS AUTO60 Look at the chart on page 462 and 463 Clutch trouble diagnosis chart

63. 12/2001VHS AUTO62 Need to Know What would cause and not cause: Clutch slippage Clutch chatter Hard shifting Clutch noises Clutch pedal pulsations Clutch application problems

64. 12/2001VHS AUTO63 Checking Flywheel for Run-out

65. 12/2001VHS AUTO64 Checking pressure plate for warpage

66. 12/2001VHS AUTO65 Clutch Disk Replacement Very wise to: Have flywheel surfaced (even with no run- out or hot spots) Replace pilot bushing or bearing Replace T/O bearing Replace pressure plate (cover, plate springs)

67. 12/2001VHS AUTO66 Clutch Disk Replacement Very wise to inspect & replace as necessary: Clutch fork & pivot Input shaft bearing retainer on transmission (where T/O bearing slides) Linkage, cable or hydraulic components Motor mounts Flywheel ring gear

68. 12/2001VHS AUTO67 Installing new clutch Drive in pilot bushing or bearing with bushing driver

69. 12/2001VHS AUTO68 Installing new clutch Loctite and torque flywheel to specifications on a clean crankshaft hub

70. 12/2001VHS AUTO69 Installing new clutch You must use clutch alignment tool (pilot shaft) when bolting up pressure plate Torque and Loctite pressure plate to specifications Use a crossing pattern to pull pressure plate down evenly

71. 12/2001VHS AUTO70 Universal clutch alignment tool Select end that fits tight in pilot bushing or bearing

72. 12/2001VHS AUTO71 Universal clutch alignment tool

73. 12/2001VHS AUTO72 Universal clutch alignment tool

74. 12/2001VHS AUTO73 Clutch Alignment tools (pilot shaft)

75. 12/2001VHS AUTO74 Alignment studs Cut off bolts screwed into engine block Prevents from bending clutch disk when installing transmission

76. 12/2001VHS AUTO75 Adjust clutch Shorten or lengthen linkage or cable to reach proper free-play Jam nutAdjusting nut

77. 12/2001VHS AUTO76 We will do standard transmissions after Christmas

78. 12/2001VHS AUTO77 Clutch questions?