Each line on the sleeve of the micrometer represents ______” or 1/40”. ... with a
micrometer or dial caliper since they have no graduations of their own.
Engine Tech Study Guide Roth 9th Chapter 2
Tools & Measuring Pages 21-43
Name____________________________ 43 Points Due Date____________
1. A combination wrench has one __________ end and one ________ end. 2. A ______________ or flare-nut wrench is used on metal tubing connection fittings. (special open end) 3. _______________________ or “crescent wrenches” should only be used as a last resort because they tend to slip and will round off (strip) the hexagon-shapes of nuts and bolts. 4. _____________fit onto ratchet handles. They are available in 1/4”, 3/8”, or 1/2” square drives. 5. ____________ wrenches or “hex keys” are used on hex, socket-head machine screws. _______® bits are star-shaped, socket head machine screws. Torx® can be internal, external or tamper resistant. 6. ___________________ wrenches are used to tighten fasteners to a specific amount of twisting force. Available in foot-pound or inch-pound increments & dial, deflecting beam, click & electronic types. 7. Proper __________ of fasteners is critical to successful repair. Torque charts are in service manuals. Torque (twisting force) reading is found by multiplying the length of the wrench handle by the applied force.
8. Change the following torque values from either inch-pounds to foot-pounds or ft-lbs to in-lbs. 120 inch-pounds = ______ foot-pounds
180 inch-pounds = ______ foot-pounds
240 inch-pounds = ______ foot-pounds
360 inch-pounds = ______ foot-pounds
36 foot-pounds = ______ inch-pounds
12 foot-pounds = ______ inch-pounds
6 foot-pounds = ______ inch-pounds
24 foot pounds = ______ inch-pounds
9. To service engines & implements you will use a huge variety of __________, screwdrivers, and hammers. 10. A ________ _____________ is used to remove gears, bearings, & blade adapters from shafts. 11. A bench-mounted ________ is useful for holding parts while working on them. Soft jaws may be needed. 12. A _______________ ________ or parts washer is used to safety remove grease and oil from parts. The solvent in the tank is non-flammable. **Never use gasoline to clean parts, it is flammable! 13. Most _____________________ expand only 1” or 25mm from closed to the fully open position. 14. A standard micrometer is graduated in ___________________ of an inch. (.001”) (digital readouts!) 15. Each line on the sleeve of the micrometer represents ______” or 1/40”. (the spindle goes through the sleeve) Each line on the thimble representing ________” or 1/1000”.
.025”
.001”
16. A dial/digital caliper can make ___________, ____________ & __________ measurements. 17. __________________________ gauges are “transfer-type” measuring tools which must be used along with a micrometer or dial caliper since they have no graduations of their own. (also called snap gages) 18. The ____________ __________ gauge is similar to a telescoping gage, but is use to measure much smaller holes (1/8” to 1/2”). It is not graduated & must be used along with a micrometer or dial caliper. 19. Thickness gages are known as “________________ _________” because they rely on the user’s “sense of feel” for accuracy. They may be made of steel, brass, or plastic & can be metric or standard. 20. Leaf or _______ feeler gages are used for measuring clearances such as ring end gap. Round or ______ feeler gages are used mostly for checking spark plug gaps. Available in metric and standard sizes.
21. Valve springs must be checked for proper _______________, length, straightness and for square. 22. A ___________________ ___________ can check level, square, 45° & 90°, as well as measure linearly. 23. _______ _______________ are used to check axial or radial movement of parts known as play or lash. 24. The ___________ __________ gauge is used to determine the coarseness of threads on nuts, bolts, or inside of threaded holes. They may be std. (threads per inch) or metric (distance between thread crests). 25. Match the following six terms to their definitions. ______ 1. Measurement
______ 3. Dimension
______ 5. Clearance
______ 2. Specification
______ 4. Tolerance
______ 6. Increment
A. A space between 2 moving machine parts left to prevent clashing or to permit relatively free motion. B. A measurement of length, width, or thickness in a particular direction or across a diameter. C. The permissible range of variation in a dimension or characteristic of an object. D. The act of determining the dimension or quantity of something, especially by comparison to a standard. E. A detailed description of requirements, dimensions, or materials. F. The difference between two measurement units or values
