Doosan DX300L Excavator Seal and Bearing Assemble Guide

This illustration show you guide on how to assemble seal and bearing for Doosan DX300L excavator.

 

Procedure:

1. Postion case so that pinion gear is pointing down.
Doosan DMS-5

2. Make sure that there is no foreign substance left on seal assembly, apply grease to and around lip of oil seal (TC5001300) as in Figure 75 and Loctite #609 to its external part.

 

3. Using seal installation jig, press seal into case, keeping it level during installation. Make sure that seall is fully seated.
Make sure that there is no foreign substances on lip area. Use care not to damage seal when inserting it.Doosan Workshop Service Manual
Chack for proper installation after pressing seal into position.
 

4. Using seal installation jig, position bearing on end of shaft, with bearing trade mark on inner race facing up. Press bearing firmly into place, making sure it is properly seated.

5. Rotate pinion by hand and check if it turns properly.

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6. Insstall plugs into PT1/2 and PT1/8 drain ports.

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