Page 110 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

EXERCISE 73 : Repair & replacement of belts and check
for workability

Objectives

At the end of this exercise you shall be able to
• fix a belt on driver and driven pulley
• measure tension of a ‘V’ belt drive
• adjust belt tension with a spring balance.
Job Sequence

• Mark and cut the belt to the required length (Fig 1).

• Trim both ends of the belt square (Fig 2).

• Fit an alligator fastener centrally into the jaws of the lacing machine and fit the pin into the side of the jaws to
hold the fastener in the machine (Fig 3).
• Put the belt centrally between the jaws of the machine. (Fig 4)
• Operate the machine to press the fastener into the belt until it is flush with the belt (Fig 5 & 6). Trim the edges
of the fastener.
• Place the belt around the shafts beside the pulleys with the rough side against the pulleys and join both ends
by the pin (Fig 7).
• Fit the belt to the small pulley end first and then run it on to the big pulley (Fig 8).

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