Page 232 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

• Check ovality of the bearing bore by fixing cap on the bottom housing as shown in Fig 4.

• To remove the ovality. Remove the cap by unscrewing fastening bolts. File the bearing caps equally with flat
file to compensate for the ovality by holding the cap into the vice as shown Fig 5.

• Fit the two halves of the bearing back together and make sure that, when the bolts are fitted, the load is taken
by the caps and not by shells. (Fig 6)

• Fit the shells to their housings. Check that they fit correctly and the oil holes align with those of the housings
as shown in Fig 7.

• Apply marking medium around the Journal area and place it into bottom shell for uniform contact. (Fig.8)

• If the number of colour marking on the bottom shell is more, it indicate shaft having proper contact with bottom
shell otherwise scrape the shell to have more number of colour marking. (Fig 9)

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CITS : C G & M - Fitter - Exercise 94