This procedure pertains to changing grease types or changing from one lubricant manufacturer to another. It explains how to relubricate bearings using a new grease and expel the previous grease.
(These conditions must be met.)
- Verify that the bearing arrangement allows excess lubricant to be bled from the system. Bearing damage may result in sealed-for-life systems or systems with oil tight sealing arrangements.
- Verify that the new lubricant and the previous lubricant are fully compatible. Mixing two incompatible products may result in chemical or physical changes which will lead to improper lubrication. Contact the lubricant manufacturers to verify compatibility.
- Verify that the subject bearing is operating properly prior to switching products. Improper fits, clearances, bearing configurations or existing bearing damage cannot be corrected by changes in lubrication.
- Verify that the bearing operating condition can accept a 100% fill condition. This procedure should not be applied to bearings which are designed to operate with limited grease quantities. Excessive bearing operating temperature may result in these cases.