6-42. In a Kingsbury type thrust bearing, which of the following is one of the purposes of the shoe? 6-48. In a Kingsbury thrust bearing, if you notice an increase in end play of the main  thrust  bearing,  which  of  the following  parts  should  you  examine  first? 1. To  equalize  the  thrust  load 2. To transmit the thrust from the collar 3. To hold the leveling plates in place 4. To receive the thrust from the leveling  plates 1. The  main  shaft  coupling 2. The  gear  teeth  surfaces 3. The  thrust  shoe  surfaces 4. The  thrust  leveling  plates 6-49. Before the end play of a main thrust bearing  is  measured  with  a  dial indicator,  the  flange  surface  should  be coated  with  which  of  the  following substances? 6-43. Some  thrust  bearing  installations  are furnished  lubricating  oil  by  the  same system  that  lubricates  which  of  the following  parts? 1. Main  shaft  bearings 2. Stern  tube  bearings 3. Reduction  gears 4. All of the above 1. Oil 2. Paint 3. Prussian blue 4. Tallow 6-44. Why  are  Kingsbury  thrust  bearings  usually provided with shoes on each side of the collar? 6-50. When checking shaft end play by jacking on the shaft flange, which of the following  actions  should  you  take? 1. To  permit  ahead  and  astern  operations 2. To  prevent  overloading  of  the  oil film 3. To  compensate  for  small  errors  in alignment 4. To  distribute  the  thrust  evenly  to all parts of the bearing 1. Rotate  the  shaft  manually 2. Ensure  that  no  structural  damages occur 3. Ensure that the shaft movement has plenty of play 4. Both steps 2 and 3 above 6-45. That  part  of  the  Kingsbury  thrust  bearing that tilts to permit the formation of a wedge-shaped film of oil is known as the Learning Objective: Recognize the components  that  support  the  main propulsion  shaft  and  describe  their functions. 1. collar 2. lower  leveling  plate 3. dowel disk 4.    shoe 6-51. What  is/are  the  primary  function(s)  of the main  line shaft bearings? 6-46. When the end play of a Kingsbury thrust bearing  is  measured,  the  upper  half  of the bearing must always be bolted down to prevent  which  of  the  following  conditions? 1. To support the weight of the shafting and hold it in alignment 2. To link the strut tube with the main line shaft 3. To  reduce  the  amount  of  friction 1. Breaking  of  the  leveling  plates 2. Tilting of the base rings 3. Distortion  of  the  shaft 4. Dislocation  of  the  collar created  during  operation To prevent the  engine  from 4. hunting Question 6-52 is to be judged True or False. 6-47. What parts of a new thrust bearing are permitted  to  have  a  slight  displacement from  the  installed  position  after  the 6 bearing  has  been  put  into  operation? -52. Main  line  shaft  spring  bearings  are lubricated  by   brass   oiler  rings  passing around  an  oil   reser voir. 1. 2. Leveling  plates Base rings 3. Thrust  shoes 4. Thrust  collars 40