*Ž>e>šHHÛ@ÿçÿîÿR#(ü,, ç `,- ^ì&'dAxxxx€Là (h`'ÿPrecision, Accuracy and Tolerance  Chapter 13 Lab Activity - Engine Lab` ÿ 8Comparing measurements to specifications and tolerances. HProblem: Your team has a used small engine crankshaft. In order to be Fuseable, the three bearing journals have to be smooth and within size %limits specified by the manufacturer.  5-P.T.O. main bearing journal : 0.875 inch ± .002 inch 2-Mag main bearing journal: 0.875 inch ± .002 inch ,-Rod bearing journal: 0.750 inch ± .002 inch :-You have a 0 - 1inch micrometer caliper at your disposal.  Understand the problem: "1. Do you have the data you need? 02. Do you have an appropriate measuring device?  3. What are you trying to find?  Develop a plan: /1. How will you determine actual journal size? *2. What mathematical method will you use?  Your procedure: 8List your plan of action below for solving this problem. 1.  2.  3.  4.   Carry out the Plan  Check your results: 'Compare your results with the lab data.         Engine Lab - Write up    Your data:  Cmaximum allowed size P.T.O. main bearing journal _________________  Cminimum allowed size P.T.O. main bearing journal _________________  Imeasured size P.T.O. main bearing journal _________________   Bmaximum allowed size Mag main bearing journal _________________  Cminimum allowed size Mag main bearing journal _________________  Imeasured size Mag main bearing journal _________________   Gmaximum allowed size Rod bearing journal _________________  Hminimum allowed size Rod bearing journal _________________  Nmeasured size Rod bearing journal _________________   %Your crank shaft number______________  )This crankshaft (is)/(is not) acceptable. if not useable, why?      Questions: 51. Why aren't all parts made to the same exact size?     E2.What might be the consequences of using an "out of tolerance" part?