Page 71 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

EXERCISE 65 : Dismantling and mounting of pulleys

Objectives

At the end of this exercise you shall be able to
• calculate the distance of the lap, the distance between centre of first rivet and edges and the distance of
pitch as per BIS standard
• layout the spacing for rivet holes to make a single riveted lap joint.

Job Sequence

Extract pulley from shaft

• Remove pulley using puller.
• Remove pulley using arbour press.
Extract pulley using puller
• Select correct size of puller, depending upon the size of the shaft and pulley.
• Clean end of the shaft using flat file, to remove any burrs or bulging on the end of the shaft.

• Place the legs of the puller diagonally opposite sides of the pulley to hold the pulley firmly (Fig 1).

Fig 1

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