Engine : General Subjects - 89/1128
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| Machinery with ball bearings designed to be filled with grease should have the relief plug temporarily removed while grease is being added. This plug should remain out until the machinery has been operated and sufficiently warmed up to ensure that __________. |
| A) all air pockets are vented from the grease |
| B) dirt and grit are flushed from the bearing housing |
| C) the grease is properly distributed within the bearing |
| D) a path of expansion is provided for the grease |
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