Komatsu PC500LC-10R Shop Manual page 339

10 STRUCTURE AND FUNCTION
General view and sectional view
a: Position of outer race soft zone
1: Greasing port of swing circle pinion
2: Inner race (quantity of teeth: 84)
3: Ball
PC500LC-10R
COMPONENT PARTS OF SWING SYSTEM
b: Position of inner race soft zone mark (S)
4: Outer race
5: Seal
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