2. Terms Nominal value ······This is the nominal dimension of the part being measured. Standard value ······This is the dimension of the individual part being measured, the clearance between the parts in question, or the standard performance in question. Standard values have been arranged within the range appropriate for the inspection being carried out, and are not necessarily the design values. Limit ·····················Parts that have reached the limit value should be replaced or repaired whichever is appropriate. 3.
Abbreviations and standards BTDC = Before Top Dead Center ATDC = After Top Dead Center BBDC = Before Bottom Dead Center ABDC = After Bottom Dead Center TIR = Total Indicator Reading API = American Petroleum Institute ASTM = American Society for Testing and Materials JIS = Japan Industrial Standards LLC = Long Life Coolant MIL = Military Specifications MSDS = Material Safety Data Sheets SAE = Society of Automotive Engineers 4. Units Values shown in this manual are based on SI units (International System of Units). The corresponding metric values are shown in ( ) immediately after the SI values. The SI to metric conversions are based on the following. Pressure:
1 MPa = 10.197 kgf / cm 2 Torque: 1 N m = 0.10197 kgf m Force: 1 N = 0.10197 kgf Horsepower: 1 kW = 1.341 HP = 1.3596 PS Meter of mercury: 1 kPa = 0.7 cmHg Meter of water: 1 kPa = 10.197 cmH 2 O (cmAq) Rotational speed: 1 min -1 = 1 rpm