Yanmar 4BY - Measuring Instruments

ENGINE
BY Service Manual
5-15
Measuring Instruments
MEASURING INSTRUMENTS
No. Instrument Name Application Illustration
1 Dial Indicator For measuring shaft bend and end play
2 Magnetic Stand For holding the dial indicator when measuring
3 Micrometer
For measuring the outside diameters of
crankshaft, pistons, piston pins, etc.
4 Cylinder Bore Gauge
For measuring the inside diameters of cylinder
bores, bearing bores, etc.
5 Calipers
For measuring outside diameters, depth,
thickness and width
6 Depth Micrometer For measuring valve recession
7 Square
For measuring valve spring inclination and
straightness of parts
8 Torque Wrench
For tightening nuts and bolts to the specified
torque
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