Bearings are housed inside a stationary unit that allows the shaft to rotate within the housing. If a bearing becomes badly worn, it can cause vibration. To check the bearings for damage and wear, first remove your mower deck. Next, remove the mandrel covers and the belt, then spin all the pulleys and listen for a growling noise. If you hear anything odd, or notice excessive movement, you will need to replace the bearing in that unit. If you decide to change the bearings in the mandrel, first remove the blade, mandrel covers, and belt. Remove the bolt holding the mandrel pulley in place, and remove the pulley, collar, and dust cover. Once you have done this, the shaft will slide out. With the mandrel taken apart, you will need to tap the bearings out with a piece of wood or something similar that will not damage the bearings. Remove...
Bearings are housed inside a stationary unit that allows the shaft to rotate within the housing. If a bearing becomes badly worn, it can cause vibration. To check the bearings for damage and wear, first remove your mower deck. Next, remove the mandrel covers and the belt, then spin all the pulleys and listen for a growling noise. If you hear anything odd, or notice excessive movement, you will need to replace the bearing in that unit. If you decide to change the bearings in the mandrel, first remove the blade, mandrel covers, and belt. Remove the bolt holding the mandrel pulley in place, and remove the pulley, collar, and dust cover. Once you have done this, the shaft will slide out. With the mandrel taken apart, you will need to tap the bearings out with a piece of wood or something similar that will not damage the bearings. Remove the bushing between the 2 bearings as well. If the mandrel has no grease fitting, be sure to pack the new bearings with grease. If the mandrel does have a grease fitting, then you will need to grease it after the bearings are installed. Tap one bearing into place and reinstall the bushing, then do the same with the other bearing. Re-install the shaft, dust cover, collar, pulley, and nut. Re-attach the blade, belt, and mandrel cover. With everything re-installed as it was before the repair, you can finally re-install the mower deck and your repair is complete.
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