Complete factory shop manual including electrical wiring diagrams for Komatsu PW170ES-6K, PW180-7E0 Wheeled Excavator. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page to save your precious time.
This Komatsu PW170ES-6K, PW180-7E0 Wheeled Excavator 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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DISASSEMBLY AND ASSEMBLY PRECAUTIONS WHEN PERFORMING OPERATION
PRECAUTIONS WHEN PERFORMING OPERATION
Be sure to follow the general precautions given below when performing removal or installation (disassembly or assembly) of units.
1. Precautions when performing removal work
If the engine coolant water contains antifreeze, dispose of it correctly.
After disconnecting hoses or tubes, cover them or install blind plugs to prevent dirt or dust from entering.
When draining oil, prepare a container of adequate size to catch the oil.
Confirm the match marks showing the installation position, and make match marks in the
necessary places before removal to prevent any mistake when assembling.
To avoid loosening any wire contacts, do not pull on the wires. In-order to prevent excessive force to the wiring, hold onto the connectors when disconnecting them.
Fasten tags to wires and hoses to identify and show their installation position and help prevent any mistakes when re-installing.
Count and check the number and thickness of the shims, and keep them in a safe place.
When raising or lifting components, be sure to use proper lifting equipment of ample strength and safety.
When using forcing screws to remove any components, tighten the forcing screws uniformly in turn.
Before removing any unit, clean the surrounding area and install a cover to prevent any dust or dirt from entering after removal.
★ Precautions when handling piping during disassembling
Fit the following blind plugs into the piping after disconnecting it during disassembly operations.
A. Hoses and tubes using sleeve nuts
2. Precautions when carrying out installation work
• Tighten all bolts and nuts (sleeve nuts) to the specified (KES) torque.
• Install the hoses without twisting or interference.
• Replace all gaskets, O-rings, cotter pins, and lock plates with new parts.
• Bend the cotter pin or lock plate securely.
• When coating with adhesive, clean the part and remove all oil and grease, then coat the threaded portion with two or three drops of adhesive.
• When coating with gasket sealant, clean the surface and remove all oil and grease, check that there is no dirt or damage, then coat uniformly with gasket sealant.
• Clean all parts, and correct any damage, dents, burrs, or rust.
• Coat rotating parts and sliding parts with engine oil.
• When press-fitting parts, coat the surface with anti-friction compound (LM-P).
• After installing snap rings, check that the snap ring is installed securely in the ring groove.
• When connecting wiring connectors, clean the connector to remove all oil, dirt, or water, then connect securely.
• When using eye bolts, check that there is no deformation or deterioration, screw them in fully, and align the direction of the hook.
• When tightening split flanges, tighten uniformly in turn to prevent excessive tightening on one side.
DISASSEMBLY AND ASSEMBLY - SOLENOID VALVE
REMOVAL OF SOLENOID VALVE ASSEMBLY
Disconnect the cable from the negative (-) terminal of the battery.
1. Remove undercarriage steps
2. Slew machine 90° to give access from below to main C/V area
3. Remove 5 solenoid wiring and 1 Epc wiring connectors
(1) from clips then disconnect + sus pressure connector
Mark the male and female ends of each connector with tags to prevent mistakes when connecting.
4. Disconnect 10 hoses (2).
Fit tags on the hoses.
5. Remove mounting bolts, then remove solenoid valve assembly (4).
• When removing solenoid valve as an individual part
Remove mounting nut (5), then remove solenoid valve (6).
INSTALLATION OF SOLENOID VALVE ASSEMBLY
• Carry out installation in the reverse order to removal.
Mounting nut (5): 4.9±0.98 Nm (0.5±0.1 kgm)
Solenoid valve (6) (individual part): 39.2±9.8 Nm (4±1 kgm)
REMOVAL OF PRESSURE SWITCH VALVE ASSEMBLY
Lower the work equipment completely to the ground and stop the engine. Then loosen the oil filler cap slowly to release the pressure inside the hydraulic tank.
1 Disconnect the cable from the negative (-) terminal of the battery.
Make match marks at the male and female ends of the oil pressure switch connectors.
Before disconnecting any hoses, check the distinguishing tape stuck to the hose, or make match marks.
1. Disconnect 16 oil pressure switch connectors (1).
2. Disconnect PPC hoses (2).
2.5 Remove hoses from additional block.
3. Disconnect control valve hoses (3) (quick joint connection).
3.5 Remove epc valve hose connection.
4. Disconnect hoses from EPC valve/clamshell 50.l valve block.