WHEN ENGINE GETS HOT.
One common cause of engine overheating is the poor operating condition of the fan, due to the belt driving it being too loose and slipping on the pulleys, thus driving the fan at a much slower speed than is intended. Most engines have provision for adjusting the belt tension by setting the fan shaft slightly higher, which lengthens the distance between pulley centres and takes up the belt slack. Sometimes the belt is badly soaked with oil or coated with grease to such an extent that abnormal slipping cannot be prevented. Such a belt should be cleaned. There should, of course, be a slight slippage of the belt, because one which is too tight will be subject to undue wear, but there is a hapyy medium tension which common sense will dictate.
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Thames Star, Volume LVII, Issue 15129, 21 February 1922, Page 6
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136WHEN ENGINE GETS HOT. Thames Star, Volume LVII, Issue 15129, 21 February 1922, Page 6
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