Measuring Instrument

Torque Wrench Vernier Caliper Micrometer Dial Guage Measuring Instrument E – Book for reference ..An initiative by RJ2 Training Team..

Overview • This E – Book is developed to enhance the overall knowledge & skill level of dealer manpower • Measuring Instrument usage reference must be taken using this book Directions to play video • Follow the steps below to watch the measuring instruments usage video for better understanding Desktop Version Smartphone Version Learning Objectives

Torque Wrench Vernier Caliper Micrometer Dial Guage

Torque Wrench Adjusting torque on Torque Wrench Overview Dial-Indicating type torque Adjustable Type Torque wrench ❑ Instrument name: Torque wrench Secondary Reading = 2 N-m Secondary Reading = 1 N-m ❑ Range: 5-25 N-m, 30-140 N-m ❑ Usage: To tighten the bolts nuts/bolts with recommended torque for example… ▪ Front axle nut ▪ Clutch centre nut ▪ Measure depth/height Application of tool Primary Reading = 40 N-m Primary Reading = 20 N-m Final Reading = Pr. Reading + Sec. Reading Final Reading = Pr. Reading + Sec. Reading = 40 N-m + 2 N-m = 20 N-m + 1 N-m = 42 N-m = 21 N-m Flywheel Driven Pulley Steering Nut

Vernier Caliper Overview Main Scale Reading ❑ Instrument name: Vernier Caliper Vernier Scale Reading ❑ Least count: 0.02 mm Step.01:- Note down the main scale reading 19.00 mm ❑ Usage: ▪ Measure Outside dimensions i.e. Outer Dia., length etc. ▪ Measure inner diameter ▪ Measure depth/height Application of tool Reading = Main scale reading + (Vernier scale matching Outer dimensions Inner dimensions Depth/Height line x Least Count) Step.02:-Note down the line on the vernier scale which match with the = 19.00 + (20 X 0.02) main scale. = 19.00 + 0.40 4th Division on vernier scale = 19.40 mm

Micrometer Micrometer selection process Overview ❑ Instrument name: Micrometer ❑ Least count: 0.01 mm ❑ Usage: ▪ Measure Outside dimensions of engine parts. ▪ Used where high precision is required Application of tool Piston O.D. Valve stem Camshaft lobe height Calculation of final measurement: Final measurement= Main Scale Reading + Vernier Scale Reading = 53.50 mm + (10 X 0.01)mm = 53.00 mm + 0.10 mm = 53.60 mm

Dial Gauge Taking readings on Dial Gauge Overview Initial Reading Final Reading Long Hand Short Hand Spindle Probe Long Hand Short Hand ❑ Instrument name: Dial Gauge Secondary reading: Primary reading: ❑ Least count: 0.01 mm ❑ Usage: 0.87 mm 1.00 mm ▪ Measure runout of crankshaft, fork pipe, front axle, cylinder bore Application of tool Final Reading= Primary Reading + Secondary Reading = 1.00 mm + 0.87 mm = 1.87 mm Calculation of final measurement: Crankshaft runout Fork pipe runout Cylinder bore diameter Final measurement= Final reading – Initial reading = 1.87 mm – 0.00 mm = 1.87 mm