Complete workshop & service manual with electrical wiring diagrams for Komatsu Wheel Loader WA150-1, WA150-5, WA150-6. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Komatsu Wheel Loader WA150-1, WA150-5, WA150-6 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.

FILELIST:
SEBM033808 - Wheel Loader WA150-5 Shop Manual.pdf
SEBM04170104 - Wheel Loader WA150-1 Shop Manual.pdf
SEN04884-01 - Wheel Loader WA150-6 Shop Manual.pdf
TEN00077-00 - Wheel Loader GALEO WA150-5 Operation & Maintenance Manual.pdf
TEN00078-00 - Wheel Loader GALEO WA150L-5 Operation & Maintenance Manual.pdf
TEN00209-05 - Wheel Loader WA150-5 Operation & Maintenance Manual.pdf
TEN00210-02 - Wheel Loader WA150L-5 Operation & Maintenance Manual.pdf
TEN00328-02 - Wheel Loader WA150-6 Operation & Maintenance Manual.pdf
TEN00491-01 - Wheel Loader WA150-6 Operation & Maintenance Manual.pdf
VEAM610200 - Wheel Loader WA150PZ-6, WA200PZ-6, WA250PZ-6, WA320PZ-6 Operation & Maintenance Manual.pdf
VEAM934100 - Wheel Loader WA150-5H Operation & Maintenance Manual.pdf
VEBM934100 - Wheel Loader GALEO WA150-5 Operation & Maintenance Manual.pdf

EXCERPT:
400 Brake system
Brake valve
Balancing operation
(*). As the rear brake piston is filled with oil and the oil pressure rises between port (PA) and port (A), the oil being conducted to chamber (E) through orifice (c) of spool (5) pushes spool (5) in the left direction resisting repulsive force of spring (4). As the result, port (PA) and port (A) are disconnected.
(*). Since port (Ta) remains closed, the oil conducted to the brake piston is retained and the brake remains operable.
(*). At the same time as spool (5) is moved to the left, the front brake piston is filled up with oil, increasing the oil pressure between port (PB) and port (B). Thus, the oil conducted to chamber (F) through orifice (d) of spool (6) pushes back spool (6) leftwards by the move distance of spool (5). As a result, port (PB) and port (B) are disconnected.
(*). Since port (Tb) remains closed, the oil conducted to the brake piston is retained and the brake remains operable.
(*). The oil pressure of the rear brake circuit [port (A) side] is balanced with the brake pedal pressing effort, and the oil pressure of the front brake circuit [port (B) side] is balanced with the oil pressure of the rear brake circuit [port (A) side].
(*). As spools (5) and (6) are moved in the right direction to the stroke end, port (PA) and port (A) as well as port (PB) and port (B) are fully connected. As a result, oil pressure of the rear brake circuit and the front brake circuit becomes equal to that from the pump.
(*). Braking force is adjustable by adjusting the brake pedal pressing effort until spools (5) and (6) are driven in the right direction to the stroke end.
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