III
FOREWORD
Terms used in this manual
Nominal value
means the basic nominal size of a part to be measured.
Standard value
means the quantitative requirement for dimension of a part, clearance between parts and performance. The values are rounded
off for the inspection job, and do not necessarily conform to the design values.
Limit value
means the limit value, which the measured value reaches, the part needs repair or replacement with a new one.
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 : Japanese Industrial Standards
LLC : Long Life Coolant
MIL : Military Specifications and Standards (U.S.A.)
MSDS : Material Safety Data Sheet
SAE : Society of Automotive Engineers (U.S.A.)
P/N : Part Number
Unit of Measurement
Measurements are based on the International System of Units (SI), and their converted metric values are indicated in { } and
U.S. customary values are in [ ]. For metric conversion, the following rates are used.
Pressure :1 MPa = 10.197 kgf/cm
2
Torque :1 N•m = 0.10197 kgf•m
Force :1 N = 0.10197 kgf
Output power :1 kW = 1.341 HP = 1.3596 PS
Pressure (mercury column) :1 kPa = 0.7 cmHg
Pressure (watercolumn) :1 kPa = 10.197 cmH
2O (cmAq)
Rotation speed: 1 min
-1
= 1 rpm
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