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Complete workshop & service manual with electrical wiring diagrams for Takeuchi Compact Excavator TB175. It’s the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
This Takeuchi Compact Excavator TB175 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.
978 pages, bookmarked, Searchable, Printable, high quality PDF
Takeuchi Compact Excavator TB175 Workshop Manual; 978 pages; Serial Number: 17510003~.
EXCERPT:
I . GENERAL
II . SPECIFICATIONS
III. MACHINE CONFIGURATION
IV . HYDRAULIC UNITS
V . TROUBLESHOOTING VI. ENGINE
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HYDRAULIC UNITS – PILOT VALVE
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OPERATION
The pilot valve casing contains a vertical shaft hole with a reducing valve incorporated into it. When the handle is tilted, the push rod and spring seat are pushed down changing the secondary pressure spring’ s pressure.
The casing provides the inlet port P (the primary pressure) and the tank port T. The secondary pressure commensurate with the variation of the operation angle of the handle (1) is taken out through the output ports A and B below the vertical shaft hole. The secondary pressure functions as the pilot pressure to actuate the spool of the control valve (2).
When the Handle (1) is at the Neutral Position:
The force of the spring (3) for setting the secondary pressure that determines the output pressure of the pilot valve is not conveyed to the spool (4). Therefore, the spool (4) is pushed up by the return spring (5), and the output ports A and B are connected with the tank port T, making the pressures in the ports A and B equal to the pressure in the tank port T.
When the Handle (1) is Tilted:
When the handle (1) is tilted and the push rod (6) is pushed, the spool (4) moves downward and the input port P is connected with the output port A. Then, the oil from the pilot pump flows into the output port A, generating a pressure.
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