Doosan DL420A Wheel Loader Shop Manual

Doosan DL420A Wheel Loader Shop Manual

This Doosan DL420A Wheel Loader manual provides detailed scheduled maintenance information for the machine owner and user. It also provides troubleshooting and repair procedures for qualified service professionals. Daewoo Doosan Dl420a Wheeled Loader Service Catalogue Manual

Basic mechanical, hydraulic, and electrical skills are required to perform most procedures. However, several procedures require specialized skills, tools, lifting equipment, and a suitable workshop. In these instances, we strongly recommend that maintenance and repair be performed at an authorized Genie dealer service center.

Know how to operate your machine. Know the purpose of all controls, gauges, signals, indicators, and monitor displays. Know the rated load capacity, speed range, braking and steering characteristics, turning radius, and operating clearances.

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) SP002474
Driveshaft SP002674
Brake
Service Brake SP002727
Brake Supply Valve SP002728
Parking Brake SP002729
Brake Pedal Valve SP000123
Accumulator SP002677
Steering
Power Steering System SP002730
Steering Unit SP002731
Flow Amplifier SP002434
Emergency Steering SP002018
and Much More…

Doosan DL420A Wheel Loader Shop Manual

Keep in mind that rain, snow, ice, loose gravel, soft ground, slopes, etc., can change the operating capabilities of your machine.

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 a display monitor, stop the machine immediately and take the necessary corrective actions. Do not operate the machine until the problem has been corrected.

Hydraulic System
Check hydraulic tubes, hoses, and fittings for damage, wear, or 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. Check that all hose and tube clamps, guards, and cushions are
securely attached. If they are loose, they can vibrate during operation and rub against other parts. This can cause damage to hoses and cause high-pressure oil to spray on hot surfaces, causing a fire and death or serious injury.

Always clean fluid spills. Do not use gasoline or diesel fuel for cleaning parts. Use commercial nonflammable solvents.

Doosan DL420A