Systems Repair Worksheet Chapter 45 Pages 1323-1362 Name______Suspension Systems 98 Points Due Date______

1. Suspension systems support the ______of the vehicle, keep the ______in contact with

the road, maintain correct vehicle ______& proper ______and reduce the effects of shock forces as the vehicle travels on irregular surfaces.

2. Vehicles can have either body –over- ______construction or be ______construction.

3. Springs can be of either the ______, ______bar, ______, or air type.

4. The amount of deflection under a certain load is known as ______.

5. ______is the term used to describe a spring compressing as a & wheel moves upward.

6. ______is the term used to describe a spring extending as a tire & wheel moves downward.

7. A ______dampens or slows the spring motion during jounce & rebound.

8. All of the vehicle’s weight supported by the suspension is known as ______weight. The more sprung weight a vehicle has, the better it’s ride will be. (springs under shocks on )

9. The vehicle’s weight not supported by the springs is known as ______weight.

10. Coil springs can be either ______rate (same shape & same wire) or ______rate.

11. In variable rate springs, inactive, transitional, and active coils have the ability to ______or bottom out within each other without touching, lessening the space needed to store the spring.

12. Leaf springs may be either ______leaf, ______, or ______.

13. A ______pin is frequently used to ensure proper rear location on leaf springs.

14. A ______secures the main leaf in a spring set to the frame allowing fore & aft movement.

15. Some leaf springs are ______mounted.

16. Fiber composite leafs made of ______and polyester resins weigh only 8-10 pounds.

17. Air/electronic springs, located in the same places as coils, can provide a 1/3 ______ride.

18. Torsion bars, often described as straightened out coils, have one end anchored to the ______and the other end anchored to the lower . Think of torsion as twisting along an axis.

19. Torsion bars are ______(right or left) because they are pre-stressed for fatigue strength. They are also able to be adjusted to change ride height.

20. Shock absorbers are ______-sensitive, ______dampening devices.

21. A works on the principle of ______displacement on both jounce & rebound.

22. Angle mounting of shocks dampens both ______and ______torque.

23. Since aerated oil is compressible, it can cause a skip in shock operation. ______-______shocks have an internal nitrogen cell or bag to eliminate foaming and aeration of the shock oil. The nitrogen chamber in a gas-charged shock may be pressurized to 25 times atmospheric pressure!

24. Air shock systems can be either ______fill or automatic ______-______.

25. Some shock absorber jounce : rebound ratio or dampening rates are adjustable. True or False

26. Most suspensions have a ______bar to reduce . They are also known as ______bars or stabilizer bars. Used on both the front and rear suspension systems, the differ in diameter.

27. Stabilizer ______& sway bar ______attach sway bars to the control arms & frame.

28. ______, are fastened from lower control arms to the frame limit forward & backward movement of lower control arms that don’t make use of the “A” shape.

29. Suspension ______are used as rubber-mounted pivots that absorb road shock as they twist.

30. Use only ______-based lubricants on bushings, petroleum-based lubes will deteriorate them.

31. MacPherson struts contain a ______, ______suspension pivot or mount, & ______absorber.

32. ______MacPherson suspensions have a mounted separately, not concentrically.

33. ______do the dampening function of a shock, locate the spring & the suspension position.

34. MacPherson suspensions eliminate the ______ball joint & the upper ______arm.

35. The upper strut ______or bearing plate is the load-carrying member of these suspensions.

37. On a modified MacPherson strut suspension, the lower ______is the load carrying member and the upper bearing plate is the component.

38. The ______-______arm, systems maintain tire-to-road contact throughout jounce & rebound. They are often called SLA, A-frame, or double-wishbone suspensions.

39. A narrow lower control arm is fitted with a ______to control fore & aft movement.

40. The steering ______and wheel ______are often forged into a single component.

41. Upper and lower ______arms or A-frames have inner pivots to allow up & down movement.

42. A ______connects the steering knuckle to the control arm, allowing the knuckle to pivot on the control arm during steering.

43. Ball joints are either ______-carrying or are ______. The load-carrying generally mounts on the control arm that holds the bottom of or “seats” the spring.

44. Load carrying ball joints are also classified as either ______or ______- loaded, depending upon how the force of the load tends to either push on or pull on the joint to keep it in its socket. Follower ball joints are said to be friction-loaded.

45. Some load carriers have ______indicators built into them. If flushed or recessed with a load on, it means they need replacement. Follower joints should have absolutely no play in them.

46. To optimize ride quality & movement some vehicles use the ______-______suspension.

47. During a bounce test, a shock or strut should only oscillate about ____ cycles & then settle.

48. Measuring ______height (also called curb height, trim height & ride height) at specific points on each corner & side of the suspension can help determine if springs are broken, sagging, or in need of replacement. Remember to replace springs in pairs and that some may be position-specific.

49. Heavy duty work of coil spring removal & installation requires a special spring ______.

50.. A ball joint must be ______and moved with a pry bar to properly check it for looseness.

51. Some wear tolerances for ball joints are so small, a dial ______must be used to check them for looseness or play. Ball joints should be checked for both axial & radial play or movement.

52. ______play is measured at a right angle to the joint centerline. ______play is measured with a dial indicator on the same axis as the centerline of the ball joint. (aka: lateral)

53. Wear indicator ball joints (most often load carriers) must remain ______to check for wear.

54. Ball joints are mounted to control arms in one of four basic ways: ______, ______, press-fit, and threaded into the control arms. A very common mounting method is press-fit.

55. Alignment should be performed after MacPherson strut, spring or ball joint service. True or False

56. Control arm ______are pressed in & out of their bores with special tools. There may also be bushings on strut rods and sway bars.

57. ______malfunction can cause steering & handling problems, braking that is not smooth, excessive bouncing after stops, cupped wear patterns on & spring bottoming.

58. A shock absorber can be ______tested for lag, skip, or seizing at any point.

59. Replacing MacPherson strut components requires the use of a strut ______.

60. Rear suspension systems may be either ______-axle, ______-independent, or independent.

61. Rear suspension systems most often use either ______or ______springs.

62. The axle housing is connected to leaf springs with ____-bolts. 63. The rear spring eye is held to the frame with a ______to allow fore & aft spring movement as it jounces & rebounds. “Axle tramp” on acceleration causes poor traction.

64. Rear coil spring suspensions must have ______arms, trailing arms or links to limit lateral movement as well as to control accelerating and braking torque.

65. A ______bar may be used to help reduce sideways (lateral) movement of the rear axle.

66. When servicing a semi-independent rear suspension, never remove both ______absorbers at the same time. hoses, lines, cables could be damaged and coil springs will fly out at you!

67. Rear strut suspensions can use either MacPherson or ______struts. These struts are not load carriers and do not have upper pivots needed for steering.

68. Some rear suspensions use ______mounted multiple or mono-leafs.

69. When servicing rear coil springs, service _____ coil at a time, but replace the springs in ______.

70. Electronically controlled suspensions may be either ______or ______.

71. ______suspensions use electronic shock absorbers with variable valving.

72. ______regulates the flow of -rheological fluid, by a variable magnetic field produced by a small electric coil mounted inside the shock, that changes from a fluid to a semi- solid instantly & directly proportional to the magnetic field applied to it. Response time is 5mSec.

73. Sensors on systems include a: ______angle sensor, ______sensor, lateral acceleration sensor, and a G-sensor. These systems can also control squat on acceleration.