Doosan DX420LC-5 Excavator Service Manual

Product Overview

The Doosan DX420LC-5 Excavator Service Manual is an essential guide for servicing your Doosan DX420LC-5 Excavator. This manual offers detailed service procedures in a comprehensive 1574-page PDF document. It features photographs and technical drawings to assist in servicing each component efficiently. This manual is presented in English with publication number 950106-01020E, applicable for serial numbers 10001 and above.

Key Features

• Format: PDF
• Language: English
• Comprehensive guide with 1574 pages
• Publication No: 950106-01020E
• Applicable for serial numbers 10001 and above

Benefits

• Step-by-step service procedures for effective maintenance
• Detailed photographs and drawings for easy component identification
• Comprehensive safety instructions to ensure safe operation
• Includes schematics of major engine systems for troubleshooting

Usage Recommendations

• Follow the detailed steps outlined for each service procedure.
• Refer to the table of contents to quickly find the required information.
• Adhere to all safety guidelines and precautions found in the manual.
• Regularly check and replace critical components as instructed, such as the torsion damper during main bearing cap repairs, to prevent further damage.

Sample Instruction: Removing the Crankshaft

The following steps outline the process for removing the crankshaft:

• Remove the crankshaft gear as described in the relevant section.
• Detach the crankshaft pulley by following the instructions in “Removing the Drive Belt” on page 4-1-144.
• Disassemble the oil sump, pump suction pipe, ladder frame, and oil pump using the respective guides.
• Remove pistons and connecting rods per the instructions in “Removing the Piston” on page 4-1-136.
• Take off main bearing caps and main bearings, ensuring to reinstall them in their marked positions.
• Carefully lift out the crankshaft.

When checking the main bearing caps for M18 main bearing screws, ensure all screws are secure because broken screws might indicate high load issues. Replace the torsion damper to avoid further problems if these screws are replaced.