Complete workshop & service manual with electrical wiring diagrams for Hitachi EX2500 Hydraulic Excavator. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
This Hitachi EX2500 Hydraulic Excavator 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.
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REMOVE AND INSTALL FRONT/SWING PILOT VALVE
CAUTION: Escaping fluid under pressure can penetrate the skin and eyes, causing serious injury. Avoid this hazard by relieving pressure before disconnecting hydraulic or other lines.
Hydraulic oil may be hot just after operation. Hot hydraulic oil may spout, possibly causing severe burns. Be sure to wait for oil to cool before starting work.
Do not quickly loosen the cap on the hydraulic oil tank. The cap may fly off due to internal pressure. Always turn the cap slowly to release any remaining pressure before removing it.
1. Stop the engine. Move all control levers to release the pressure remaining in the system. Slowly turn the cap on the hydraulic oil tank approximately 30 degrees counter-clockwise to release any remaining pressure.
1. Remove bolts (2) from the left and right lever stand to remove covers (3). : 10 mm
IMPORTANT: Put tags on disconnected hoses for identification to help in reassembly. (Refer to page W2-5-5 for port locations.)
2. Disconnect all hoses and electrical lines from the left and right pilot valves. : 22 mm
3. Remove bolts (1) to remove the left and right pilot valves. : 10 mm