2-30. Crab  steering  moves  a  machine in a straight line at an angle to its center line. 1. True 2. False Learning  Objective: Recognize the  principles  and  components of  suspension  systems. 2-31. What component is used to suspend wheels or tracks from a vehicle frame? 1. Drag link 2. Springs 3. Torque  rods 4. Shock  absorber 2-32. Which of the following problems are  symptoms  of  suspension  troubles in  vehicle  operations? 1. Vehicle  wanders 2. Vehicle pulls to one side during  normal  driving 3. Sway on turns 4. All of the above 2-33. Which  of  the  following  components of a multiple leaf spring keeps the springs from separating on the rebound after the spring has been depressed? 1. Spring  hanger 2. Leaf clip 3. Spring  seat 4. Spring  shackle 2-34. Which  of  the  following  components of  a  multiple  leaf  spring  provides a  swinging  support  allowing  the spring  to  straighten  out  when compressed? 1. Spring  hanger 2. Leaf clip 3. Spring  seat 4. Spring  shackle 2-35. What parts are used to prevent the spring  from  shifting  on  track  type of  tractors? 1. Brackets 2. Shackles 3. U-bolts 4. Hangers 2-36. Coil  springs  are  generally  used  on which  of  the  following  suspension systems? 1. 4 X 4 suspension systems 2. 4 X 6 suspension systems 3. Independent  suspension  systems 4. All  suspension  systems 2-37. Rubberized  fabric  spacers  placed  at each end of spring coils serve what function? 1. They  prevent  oil  leakage 2. They  prevent  squeaking 3. They  prevent  grease  leakage 4. They provide a tighter seal between the coil spring and the  steering  bushing 2-38. Double–acting  shock  absorbers perform  which  of  the  following functions? 1. Prevent  metal-to-metal  contact when  the  springs  are  compressed and absorb torsion from the springs 2. Check  spring  rebound  only 3. Check  spring  compression  and spring  rebound 4. Prevent  metal-to-metal  contact when  the  springs  are  compressed and check spring rebound Learning  Objective: Recognize the  principles  and  components of  tires. 2–39. Abuse and neglect are primary causes  of  the  premature  failure of  tires. 1. True 2. False 12