Complete workshop & service manual with electrical wiring diagrams for Komatsu Mobile Crusher BR350JG-1. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Komatsu Mobile Crusher BR350JG-1 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.

SEAD020100 - Mobile Crusher BR350JG-1 Operation & Maintenance Manual (SN1005&up).pdf
SEAD020103 - Mobile Crusher BR350JG-1 Operation & Maintenance Manual (SN1232&up).pdf
SEBD013803 - Mobile Crusher BR350JG-1 Shop Manual (SN1005&up).pdf

EXCERPT:
STRUCTURE AND FUNCTION
2. Operation of relief valve
(1) Cut-off control actuated
Function
When cut-off control is being carried out on the pump by the TVC valve, the pump swash plate angle is at the minimum.
The relief valve acts to relieve the oil flow when the pump is at the minimum swash plate angle in order to maintain the overall balance.
Operation
When the cylinder reaches the end of its stroke, main relief valves (2A, 28) open and pump discharge amount Q is relieved to tank passages (9A, 98).
When pump delivery pressure pP comes close to the relief pressure, the engine throttle controller sends a signal to the solenoid of the TVC valve and carries out the cut-off function to make pump discharge amount Q the minimum.
The spool is at the end of its stroke, so there is no flow of oil upstream or downstream from the spool. As a result, pump discharge pressure pP and LS pressure PLS are almost the same pressure, and LS differential pressure becomes 0.
LS differential pressure is lower than the LS set pressure of the LS valve, so the LS valve acts to try to move the pump swash plate angle to the maximum. However, because of the structure, the action of the TVC valve is given priority over the action of the LS valve, so the pump is held at the minimum swash plate angle by the cut-off function of the TVC valve.
…