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21 Cards in this Set
- Front
- Back
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What are Sensitive Measuring Tools ? |
Devices that provide measurement readings to a thousandth of an inch or less. |
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Which sensitive measuring tools are used most? |
- Dial Indicator - Dial/Vernier Caliper - Micrometer - Snap Gauge - Bore Gauge - Strain Gauge |
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What is a dial indicator used to measure? |
- Shaft Runout - Shaft Thrust - Gear Backlash - Flywheel Face Runout - Flywheel Housing Concentricity - Valve Seat Concentricity |
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What does a dial/vernier caliper measure? |
Used to measure the inside or outside diameter of an object. |
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What is the purpose of a snap gauge? |
Compares the outside diameters of parts such as shafts and journals to a standard. |
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What is the purpose of bore gauges? |
Measuring a cylindrical bore or for checking a bore for out of roundness or taper. |
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What is the purpose of strain/deflection gauge? |
Used to check the crankshaft alignment on large diesel engines. |
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What is the correct method to follow when opening a micrometer? |
Hold the frame with one hand and turn the knurled sleeve with the other hand. |
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Why must you expose the bore gauge and its special tools to the same environment before measuring? |
Because the temperature differential may cause your reading to be inaccurate. |
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When a strain/deflection gauge is used, readings are generally taken in how many crank positions? |
4 |
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If you use an extension to a torque adapter, how should the torque be applied to the part or fastener compared to the torque indicated on the torque wrench? |
Greater |
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In what location would you most likely use a dynamometer? |
Shore activity shop |
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When taking crankshaft End play of Thrust Reading, which of the following steps is part of the procedure you must use? |
Set the dial indicator to zero. |
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How does the strain/deflection gauge check crankshaft alignment on large diesel engines? |
Flexing motion of the web. |
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Which of the following measurements of speed is not measured by a stroboscope? |
In-line |
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Ridge reamers are used to remove ridges on cylinders; how are these ridges formed? |
Piston rings moving up and down in the cylinder. |
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Most micrometers read down to what friction on an inch? |
.0001 |
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To ensure the accuracy when measuring crankshaft end play, take the measurement what minimum number of times? |
2 |
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What is the preferred ratio of the torque multiplier? |
2 to 1 |
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When an engine has been repaired, and needs to be tested for proper operation and power output, what piece of test equipment is used? |
Dynamometer. Applies specific loads to an engine. |
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What must you do to the strain/deflection gauge after each reading? |
Nothing, do not touch until all reading are completely taken. |
