Page 155 - CITS - Fitter Trade Practical - Volume -2
P. 155
FITTER - CITS
When the dies bite into the pipe, stop pushing and continue the rotation by moving the handle up and down.
Apply the lubricant to the pipe after the first thread has been cut.
Keep rotating the handles clockwise and check the length of the pipe thread.
Ensure that the length of the thread is sufficient to fit half way into the socket or coupling.
If the die stock and the die stick, turn the stock anticlockwise to break the chips.
Reverse the ratchet knob, ease the handle and turn the stock anticlockwise till the stock and dies come out of the
pipe.
Clean the thread with a wire brush.
Form thread until the pipe extends about one or two threads beyond the end of the stock.
Remove the stock and dies by operating the quick-release lever and clean off the thread with a wire brush.
Check the formation of thread with a standard fitting.
Repeat the operation if the thread is too tight, by adjusting the dies.
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CITS : C G & M - Fitter - Exercise 86 - 88
