Assignment   4 ENGINE  MAINTENANCE Textbook  Assignment:  Engineman  1&C,  NAVEDTRA  10543-E1,  Pages  3-1  through  3-24 Learning Objective: Describe the procedure and equipments used to inspect and test-run diesel engines. 4-1. 4-2. 4-3. 4-4. 4-5. Questions 4-1 through 4-4 are to be judged True or False. A comparatively minor engine malfunction, if  not  recognized  and  remedied  in  its early  stages,never  develops  into  a major   casualty. Work center personnel must learn to recognize symptoms of developing malfunctions  by  using  the  senses  of  sight, hearing,  smell,  and  touch. Because  of  the  safety  features  which  are commonly  incorporated  in  pumps  and  similar equipment,   considerable  loss  of  capacity may  occur  before  any  external  evidence  of damage  is  apparent. When  a  material  failure  occurs  in  any unit,   a  prompt  inspection  of  all  similar units  will  NOT  prevent  a  wave  of  similar casualties. A  spring-balanced  indicator  uses  which  of the  following  types  of  pistons? 1. Trunk 2. Inverted 3. Ball 4. Check 22 Questions 4-6 and 4-7 are to be judged True or False. 4-6. The  Kiene  indicator  is  used  only  to measure the firing pressure of an engine. 4-7.    A  multivolt  meter  is  used  to  measure  the voltage produced by the thermocouples installed in an engine's exhaust system. Learning Objective:Specify  what maintenance and adjustments are required on temperature regulators, and recognize some of the troubles that may be encountered. Question 4-8 is to be judged True or False. 4-8. For  maximum  temperature  control,  the  bulb of  the  temperature  regulator  should  always be installed in the inlet side of the engine  cooling  water  piping  system. 4-9. At  which  of  the  following  points  should the  valve  stem  of  a  temperature  regulator be  lubricated? 1. Where  the  valve  stem  enters  the stuffing  box 2. Around  the  threaded  sleeve  used  for manual  control 3. Both 1 and 2 above 4. At  the  temperature  adjusting wheel 4-10. What  should  you  do  if  the  temperature of  the  freshwater  leaving  the  engine becomes  too  high  when  the  regulator is  set  on  the  lowest  adjustment  setting? 1. Make  sure  that  the  manual  pointer  is set  at  the  THERMOSTATIC  position 2. Make  sure  that  the  packing  gland  is not  binding  the  valve  stem  and  the valve stem is not stuck in the minimum  cooling  position 3. Make  sure  that  the  temperature control  element  is  operating  properly 4. All of the above