Doosan DX490LC-5 and DX530LC-5 Excavator Service Manual

Table of Contents

Changing the Burner, Flame Monitor and Glow Plug Removal
1. Remove heater.
2. Remove combustion air fan.
3. Remove screw (5, Figure 5) and washer (4, Figure 5).
4. Remove nuts (10, Figure 5) and pull off the bar (8, Figure 5).
5. Pull the grommets (11 and 12, Figure 5) out of the slots in the housing of the combustion pipe (3, Figure 5).
6. Pull the grommet (13, Figure 5) and burner (1, Figure 5) out of the burner head and remove with the swirl orifice (2, Figure 5).
7. Pull the flame monitor (7, Figure 5) and glow plug (6, Figure 5) from the burner (1, Figure 5) and remove.
8. Perform a visual check for assessing the burner.
9. Complete the work on stripped-down components.
Installation
1. Place the swirl orifice (2, Figure 5) onto the burner (1, Figure 5).
2. Carefully insert the flame monitor (7, Figure 5) and glow plug (6, Figure 5) into the burner up to the stop and push the grommets (11 and 12, Figure 5) into the slots in the housing of the burner pipe (3, Figure 5).
3. Insert the burner (1, Figure 5) and grommet (13, Figure 5) into the burner head (3, Figure 5).
4. Push the insulation (9, Figure 5) onto the bar (8, Figure 5) and bring the bar into the assembly position.
NOTE: Route the cable of the flame monitor and the glow plug as shown in the figure!
5. Secure the bar (8, Figure 5) using the nuts (10, Figure 5).
Tighten the nuts to 3 N.m 10%.
6. Secure the fuel line using the screw (5, Figure 5) and washer (4, Figure 5). Tighten the screw to 3 N.m 10%.
7. Install the combustion air fan.
8. Connect the electrical connections.
9. Install the heater

How to Use The Guide Manual

This manual provides information for servicing the Excavator. All service procedures are broken down into detailed steps, listed in their recommended sequence. The manual uses both photographs and drawings to help locate and itemize components. The table of Contents on the preceding pages is your best tool for finding the service procedure you need. Be certain to observe all Safety information included in these pages.

A schematic of each of the major engine systems is provided at the beginning of the section of the manual devoted to troubleshooting and repairing that particular system.

Basic safety precautions are list in the Safety section of the Service Manual. Additional safety precautions are list in the Safety section of the owner/operation/maintenance publication. Specific safety warnings for all these publications are provided in the description of operations where hazards exist. WARNING labels have also been put on the product to provide instructions and to identify specific hazards.