Doosan DX300LC Excavator Lower Roller Reassembly and Disassembly Guide

This instruction show you guide on how to reassembly and disassembly lower roller for Doosan DX300LC excavator. Doosan DMS-5 Download



Procedures:
1. Degrease, clean and dry all parts before reassembly. Insert bushing into roller.
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2. Apply grease to the O-rings (7, Figure 29) and insert into axle.
3. Align collar (2, Figure 30) and axle (3) pin holes and pin (5) the collar.
4. Insert floating seals (6, Figure 31) into the roller (1) and collar (2).
NOTE: Apply clean engine oil to the joint side of the floating seal. Apply grease to the floating seal O-ring.
5. Slide the axle inside the roller.
6. Install the collar (2, Figure 32), O-ring (7), and pin (5) on the remaining side.
7. Fill with clean engine oil with approximately 480.0 cc (16.2 oz).
8. Install plug (8, Figure 32) on the collar.
Doosan EPC
Lower Roller Installation
1. Install four bolts to hold lower roller assembly to track frame.
NOTE: To gain access to some rollers a link guard may have to be removed. Remove four spring washers and bolts to remove guard.

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