tools & measuring instruments
Post on 30-Dec-2015
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DESCRIPTIONTools & Measuring Instruments. Ag Mechanics. Shop Tools. Quality tools recommended by the manufacturer should be used when servicing a small gas engine, Makes service easy and effective and prevents damage to parts Common shop tools include Wrenches - Punches - Hammers - PowerPoint PPT Presentation
TOOLS & MEASURING INSTRUMENTSAg Mechanics
SHOP TOOLSQuality tools recommended by the manufacturer should be used when servicing a small gas engine, Makes service easy and effective and prevents damage to partsCommon shop tools includeWrenches - Punches - HammersPiers - ChiselsScrewdrivers - Measuring Instruments
WRENCHESThere are many types of wrenches, and it is important to use the correct tool when faced with a decision of which would be best.Box end, open end, adjustable, and socket type wrenches should be used on hexagon bolts and nutsWhich is better to use if you can encompass the entire bolt head, an open or closed end wrench?
IDENTIFY THESE WRENCHESD.A.B.C.
IDENTIFY THESE WRENCHESD.A.B.C.Combination WrenchOpen End WrenchAdjustable Wrench6 Point Socket & Ratchet Handle
WRENCHESAn adjustable wrench should be used as a last resort when other wrenches are not available.Adjustable wrenches are prone to loosening and slipping around the corner of bolts and nutsA torque wrench is used to tighten threaded fasteners to a specific torque setting.Torque is the turning force applied to the fastener
PLIERSPliers are useful for gripping, bending, pulling, and cutting wires.
THEY SHOULD NOT BE USED IN PLACE OF WRENCHES
IDENTIFY THESE PLIERSA.B.C.D.
ANSWERA.B.C.D.Water Pump PliersSlip Joint PliersLineman PliersNeedle Nose Pliers
SCREWDRIVERSScrewdrivers are available in a variety of shapes and sizes. Standard and phillips varietyThe proper size blade should be used to match the length and thickness of the screw head slot
Offset screwdrivers can be used in tight situations.
IDENTIFY THESE SCREWDRIVERSA.B.C.D.
IDENTIFY THESE SCREWDRIVERSA.B.C.D.Standard ScrewdriverStubby ScrewdriverOffset ScrewdriverPhillips Screwdriver
PUNCHESMany types of punches are used for small engine workCenter punchHas a point on the end, used to make depression in metal surfaces before drillingPrick punchSame as above, but the point is 60 degrees to leave a small depression prior to using the center punchPin punchUsed to drive pinsDrift punchUsed to align holes in mating parts
IDENTIFY THESE PUNCHESA.D.B.C.
IDENTIFY THESE PUNCHESA.D.B.C.Center PunchDrift PunchPin PunchPrick Punch
MEASURING INSTRUMENTSHigh quality measuring instruments should always be used when servicing a small gas engine.Measurements are made to determine if parts are within specific limits or if adjustments are needed.CalipersUsed to measure the diameter or thickness of an objectInside or outsideMicrometersPrecision instrument designed to accuratley measure engine parts
IDENTIFY THESE MEASURING TOOLSC.D.A.B.
IDENTIFY THESE MEASURING TOOLSC.D.A.B.MicrometerOutside CaliperInside CaliperFeeler Gauge
PARTS OF A MICROMETERTo understand how to take a reading from a micrometer, we need to know the parts.AnvilSpindleSleeveFrameThimble
THIS IS A ENGLISH MICROMETER
STEPS TO READING A MICROMETERLightly tighten on object.Determine smallest measurement when micrometer is closed.Find largest visible number on sleeve and multiply times 0.100.Count number of marks past largest visible number on sleeve and multiply times 0.025.Multiply thimble reading times 0.001.Add all numbers to get answer.
1516171814 13190.0000.300NOW, AN EXAMPLE...0.0250.016
REVIEW...Lightly tighten on object.Determine smallest measurement when micrometer is closed.Find largest visible number on sleeve and multiply times 0.100.Count number of marks past largest visible number on sleeve and multiply times 0.025.Multiply thimble reading times 0.001.Add all numbers to get answer.