Complete workshop & service manual with electrical wiring diagrams for Doosan DL450 Wheel Loader. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Doosan DL450 Wheel Loader service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

“K1039661E.pdf”
Doosan DL450 Wheel Loader Shop Manual
K1039661E; Serial Number 5001 and Up; 1,016 pages

TABLE OF CONTENTS
Safety
Wheel Loader Safety ....... SP001667
Specifications
Specification for DL450........ SP001668
General Maintenance
General Maintenance Procedures........... SP000097
Standard Torques............ SP000813
Engine
QSM11 Engine ............ SP001669
Drive Train
Transmission and Torque Converter (ZF 4WG-260-4)............ SP001670
Transmission Error Codes (ZF) .......... SP000100
Axle (ZF-MT-L 3105) ....... SP001672
Drive Shaft .......... SP001673
Brake
Service Brake ......... SP001674
Brake Supply Valve ......... SP000121
Parking Brake ......... SP000122
Brake Pedal Valve ........... SP000123
Accumulator........ SP001675
Steering
Steering Unit ....... SP001676
Flow Amplifier ......... SP000126
Cushion Valve......... SP000127
Emergency Steering ........ SP001677
Frame
Articulation Center ........... SP001678
Counterweight......... SP000130
Tank
Oil Tank ....... SP001679
Fuel Tank......... SP001680
Hydraulics
Main Control Valve .......... SP001681
Load Isolation System ......... SP001682
Cooling System............ SP000154
Pilot System........ SP001714
Hydraulic Schematic (DL450) ......... SP001683
Electrical System
Air Conditioner........ SP000172
Electrical System......... SP001684
Electrical Schematic (DL450) ......... SP001685
…

— — — — — — — — — — — — — — — — — — — — — — — — — — —

EXCERPT:
GENERAL DESCRIPTION
The main control valve controls the operation of the bucket and boom cylinders. The control valve is a closed center side valve equipped with pilot controlled load holding valve.
The valve is made-up of a section with built-in lifting/lowering and tilt function spools.
The load holding valve pilot spools for each function are located in the control valve end plates.
The lifting/lowering function and the tilt function are coupled serially, which implies that these functions can be operated simultaneously.
…