Complete workshop & service manual with electrical wiring diagrams for Komatsu 630E Dump Truck. It’s the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
This service & repair manual for KOMATSU 630E HAULPAK TRUCK (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.
DG675 – Dump Truck 630E Shop Manual.pdf
DG738 – Dump Truck 630E Operation & Maintenance Manual.pdf
EXCERPT:
TABLE OF CONTENTS
GENERAL INFORMATION
STRUCTURES
ENGINE, FUEL, COOLING AND AIR CLEANER
ELECTRIC SYSTEM (24 VDC. NON-PROPULSION
ELECTRIC PROPULSION AND CONTROL
DRIVE AXLE, SPINDLES AND WHEELS
HYDRAIR® II SUSPENSIONS
BRAKE CIRCUIT
AIR SYSTEM
HYDRAULIC SYSTEM
OPTIONS AND SPECIAL TOOLS
OPERATOR’S CAB
LUBRICATION AND SERVICE
ALPHABETICAL INDEXQ
SYSTEM SCHEMATICS
…
AIR THROTTLE/ELECTRONIC RETARD
CONTROL
Trucks equipped with an air throttle use an air pressure modulating treadle valve to control an air cylinder attached to the engine fuel control device. (Refer to Section K for throttle treadle service information.)
The AS switch described below provides the propulsion initiation signal (AS) to the FL275 panel when the accelerator pedal is depressed.
If equipped with an air operated throttle, the truck will utilize an operator controlled, electronic retard initiation and modulation control system consisting of an electronic retard pedal and a Retard Panel [RET] (5, Figure 2-32) providing FL275 panel interface requirements.
The Retard Panel receives a variable voltage signal from the foot pedal, proportional to the angle of depression of the pedal. The RET panel provides a signal (RS) to initiate retarding and a variable voltage signal (RPINHI) proportional to the amount of retarding
effort, requested by the operator, to the FL275 panel.
For retard pedal service, refer to ”Electronic Accelerator And Retard Pedals” in this Section. For RET service and adjustment, refer to “Statex III Electrical Checkout Procedure”, Section 1.2.
Acceleration Switch [AS]
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