CYLINDER GP-HYDRAULIC 5083948 - Caterpillar

bearings that are used in the generator contain grease. The grease is subject to deterioration. If the generator is stored more than one year, without rotating the rotor, new bearings may be required. The bearings are greased at the factory. The bearings do not require any additional greasing in the field. Remove any necessary covers in order to inspect the bearings of the generator. Perform a visual inspection for obvious damage, for corrosion, or for an excessive amount of purged grease around the bearing sleeves. Small amounts of purged grease are expected. Grease that covers the brackets or the windings is excessive.If inspection indicates that bearings are free of rust or corrosion, and no noise or excessive vibration occur on start-up, replacement is not necessary.If inspection indicates that bearing replacement is necessary, consult your Cat dealer.