Doosan DX300LC Excavator Swing Reduction Gear Disassemble Guide

July 20, 2022

This instruction show you guide on how to disassemble swing reduction gear for Doosan DX300LC excavator.

Doosan Data Monitoring System DMS-5 DMS-3 Free Download

Procedures:
1. Remove bolts and motor from swing reduction case.
CAUTION:The motor should be separated without damage or any foreign substance.
2. Remove level pipe from cover.

3. Remove bolts and cover from case.
CAUTION!
Care should be taken not to damage mounting surface of cover. Carefully remove all gasket material from mounting surfaces.

4. Remove No. 1 sun gear from No. 1 carrier.
CAUTION:Care should be taken not to damage teeth of No. 1 sun gear.

5. Remove No. 1 carrier.

6. Remove washer and No. 2 sun gear
Care should be taken not to damage teeth of No. 2 sun
gear.

7. Install eye bolts in No. 2 carrier and remove it from ring
gear.

8. Install eye bolts in ring gear and remove it.
Care should be taken not to damage mounting surfaces of ring gear and case. Carefully remove all gasket material from mounting surfaces.Doosan DMS-5

9. Use a rollover machine to turn assembly over, loosen lock
wire, bolts and cover.

10. Remove pinion gear.

11. Using a gear puller to remove collar

12. Using snap ring pliers, remove lock ring and disassemble
plate.

13. Use a rollover machine to turn case over and place a jig on drive shaft. Use a press to remove drive shaft from case.