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Summary of Contents for Doosan DL420A
- Page 1 Shop Manual DL420A Wheel Loader Serial Number 10001 and Up DOOSAN and the DOOSAN logo are registered trademarks of DOOSAN Corporation in the United 950106-00817E States and various other countries around the world. June 2012 Copyright DOOSAN 2012 Original Instructions...
- Page 3 Table of Contents Safety Wheel Loader Safety ................SP002667 Specifications Specification for DL420A ..............SP002704 General Maintenance General Maintenance Instructions ............SP002454 Standard Torques ................. SP002404 Drivetrain Transmission and Torque Converter ............ SP002705 Transmission Error Codes (ZF) ............SP002673 Front Axle (ZF-MT-L 3105 II) ..............SP002402 Rear Axle (ZF-MT-L 3095 II)..............
- Page 4 Main Control Valve ................SP002735 Load Isolation System ................SP002736 Fan Drive Hydraulic Motor ..............SP002737 Unloader Valve ..................SP002738 Pilot System..................SP002739 Hydraulic Schematic DL420A ............... SP002740 Electrical System Air Conditioner ..................SP000172 Electrical System .................. SP002712 Electrical Schematic (DL420A) ............. SP002742...
- Page 5 Safety...
- Page 7 SP002667 WHEEL LOADER SAFETYSP002667 Wheel Loader Safety Edition 1 Wheel Loader Safety SP002667 Page 1...
- Page 8 MEMO Wheel Loader Safety SP002667 Page 2...
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Page 9: Table Of Contents
Table of Contents Wheel Loader Safety Safety Instructions ..........5 Applicable Models ..........5 Safety Messages ..........6 Safety Decals ............7 General..............7 Transportation ............ 17 Operation ............19 Maintenance ............37 Environment and Circumstances......52 Wheel Loader Safety SP002667 Page 3... - Page 10 MEMO Wheel Loader Safety SP002667 Page 4...
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Page 11: Safety Instructions
The contents of this section apply to the following models and serial number ranges. MODEL SERIAL NUMBER RANGE DL250A 10001 and Up DL300A 10001 and Up DL420A 10001 and Up DL550A 10001 and Up Wheel Loader Safety SP002667 Page 5... -
Page 12: Safety Messages
SAFETY MESSAGES Safety messages and safety decals included in this manual and on the machine provide instructions how to operate, service and maintain the machine. Safety messages and safety decals indicate potential hazards and describe safety precautions required to avoid hazards. Operator and maintenance personnel should read and understand these safety messages and decals before beginning operation or maintenance. -
Page 13: Safety Decals
SAFETY DECALS Location of safety labels (decals) can vary from unit to unit. Refer to appropriate Operation and Maintenance Manual, and parts manual for your unit. Always replace damaged or faded decals. GENERAL Safe Operation is Operator's Responsibility Only trained and authorized personnel should operate and maintain the machine. - Page 14 Proper Work Tools and Attachments Only use work tools and attachments that are recommended by DOOSAN for use on DOOSAN machines. When installing and using optional attachments, read instruction manual for attachment, and general information related to attachments in this manual. Because DOOSAN cannot anticipate, identify or...
- Page 15 Falling Object Protective Structure (FOPS) or window guards. Contact HAOA110L your DOOSAN distributor for information on available protective Figure 2 guards. To prevent personnel from being struck by flying objects, keep personnel out of work area.
- Page 16 Correction of Machine Problems If any machine problems are found during operation and maintenance (noise, vibration, smell, incorrect gauges, smoke, oil leakage, etc.), or if any abnormal warming alerts are displayed on display monitor, stop the machine immediately and take the necessary corrective actions. Do not operate the machine until problem has been corrected.
- Page 17 Hot Coolant and Oils - Burn Prevention Do not touch any part of an operating engine. Immediately after operations are stopped, coolant, engine oil, and hydraulic oil are at their highest temperatures. The radiator and hydraulic tank are still under pressure. Always wait for temperature to cool down.
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Page 18: Operation
Maintenance The machine and some attachments have components that reach high temperatures under normal operating conditions. The primary source of high temperatures are the engine and exhaust system. If damaged or incorrectly maintained, the electrical system can be a source of arcs or sparks. Flammable debris (leaves, straw, etc.) must be removed regularly. - Page 19 Hydraulic System Check hydraulic tubes, hoses and fittings for damage, wear or for leaks. Hydraulic lines and hoses must be properly routed and have adequate support and secure clamps. Leaks can cause fires. Never use a flame or bare skin to check for leaks. Tighten or replace any parts that show leakage.
- Page 20 Never Use Ether Starting Aids Do not use ether or starting fluids on any engine that has glow plugs, or an electric grid type manifold heater. These starting aids can cause an explosion and result in death or serious injury. Use procedures in this manual for connecting battery and for jump-starting.
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