STRUCTURE, FUNCTION, & MAINTENANCE STANDARD SWING MACHINERY 12 1. Swing pinion (No. of teeth: 15) 2. Spacer 3. Case 4. No. 2 planetary carrier 5. No. 2 sun gear 6. Ring gear 7. No. 1 sun gear 8. Swing motor 9. Oil level gauge 10. No. 1 planetary gear 11. No. 1 planetary carrier 12. No. 2 planetary gear 13. Drain plug SPECIFICATIONS Reduction ratio: 627 . 18 18 58 18 17 58 17 = + Ч + Unit: mm PC210/240-7K 10-9 No. Check item Criteria Remedy 14 Backlash between swing motor shaft and No. 1 sun gear Standard clearance Clearance limit Replace 0.18 - 0.28 — 15 Backlash between No. 1 sun gear and No. 1 plane- tary gear 0.16 - 0.50 1.00 16 Backlash between No.
1 planetary gear and ring gear 0.18 - 0.59 1.10 17 Backlash between No. 1 planetary carrier and No. 2 sun gear 0.39 - 0.71 1.20 18 Backlash between No. 2 sun gear and No. 2 plane- tary gear 0.16 - 0.50 0.90 19 Backlash between No. 2 planetary gear and ring gear 0.18 - 0.59 1.00 20 Backlash between No. 2 planetary carrier and swing pinion 0.07 - 0.23 — 21 Backlash between swing pinion and swing circle 0.22 - 1.32 2.00 22 Clearance between plate and planetary carrier 0.66 - 1.14 — 23 Wear of swing pinion surface contacting with oil seal Standard size Repair limit Apply hard chrome plating, recondition, or replace 0 115 -0.100 —