Page 161 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

• Check straightness of side using try square.

• File the adjacent shorter side flat and square to both the finished sides.
• Check squareness (right angle) between both sides using try square.
• Remove burrs/ sharp edge.
• Apply marking media on job surfaces

• Mark lines as per drawing.
• Punch witness marks.
• Mark centre drill for drilling.
• Find hole size for M10X1.5 tapping using formula

TDS=Tap size-2xdepth of thread.

• Drill Ø 6mm in six places.
• Enlarge Ø 8.5mm and chamfered for tapping.
• Hold C’SK drill AM6 for counter sinking

• Use counter sunk drill AM-6
• Set taper tap in Ø 8.5mm hole.
• Check straightness using try square.
• Use medium and bottoming tap.

• Check thread using Bolt Ø 10mm.
• De-burrs and remove sharp edge.
• Apply a little oil and preserve it for evaluation.

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CITS : CG & M - Fitter - Exercise 45