7. Q. What kind of oil should be used on hot bearings?

A. Use engine oil unless the temperature of bearing consumes it, when a

small quantity of valve oil may be used while the bearing is warm enough

to make this oil flow. The valve oil must be removed as soon as the

bearing cools to prevent reheating.

The Traveling Engineers' Association to Improve the Locomotive Engine Service of American Railroads Examination Questions and Answers for Firemen for Promotion and New Men for Employment · 第 212 / 436 题