Complete workshop & service manual with electrical wiring diagrams for Komatsu Dump Trucks 140M. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Komatsu Dump Trucks 140M 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.

DG693 - Dump Truck 140M Shop Manual.pdf

EXCERPT:
TABLE OF CONTENTS
SUBJECT . . . . . . SECTION
GENERAL INFORMATION ....................... A
STRUCTURES . . . . . . . . . B
ENGINE, FUEL, COOLING AND AIR CLEANER . . . . . . C
ELECTRIC SYSTEM (24 VDC. NON-PROPULSION) . . . . . . . . D
TRANSMISSION AND PTO . . . . . . F
DRIVE AXLE, SPINDLES AND WHEELS . . . . . . G
HYDRAIR® II SUSPENSIONS . . . . . . . . H
BRAKE CIRCUIT . . . . . . . . J
HYDRAULIC SYSTEM . . . . . . . . L
OPTIONS AND SPECIAL TOOLS . . . . . M
OPERATOR'S CAB . . . . . . . . . N
LUBRICATION AND SERVICE ..................... P
ALPHABETICAL INDEX . . . . . . . . Q
SYSTEM SCHEMATICS .......... R
...
RADIATOR SHUTTERS
TEMPERATURE CONTROL CIRCUIT
The temperature control system contains a solenoid valve, temperature switch and relay, shutter control cylinder, radiator shutter assembly and the necessary hoses and wiring for operation.
OPERATION
Hydraulic pressure to operate the shutters is supplied from a pilot port on the auxiliary manifold and directed to the solenoid valve located on the right side of the radiator top tank.
On engine start up, the solenoid valve will be in its normally open position, allowing oil pressure to be applied to the shutter control cylinder to move the shutters to a fully closed position. This blocks air flow through the radiator to speed the warm up of coolant through the system.
The 24 volt unswitched side of the engine oil pressure switch supplies 24 volts to the solenoid switch.
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