2008 Hitachi ZAXIS-3 Hydraulic Excavator Operator's Manual (P/N EM1U1-EN3-1)

This operator's manual (P/N EM1U1-EN3-1) covers 2008 Hitachi ZAXIS-3 hydraulic excavators, including the M, LC, LCN, and N variants listed above. It combines operating instructions, routine maintenance, adjustment and replacement procedures, troubleshooting tables, and attachment-specific information.

• Controls and monitor: Operator station controls, alarm displays, work modes, attachment selection, pump flow settings, and monitor-based maintenance reminders.
• Engine and fuel maintenance: Engine oil and filter servicing, fuel-filter draining and replacement, fuel system air bleeding, and fan-belt inspection.
• Hydraulic maintenance: Hydraulic oil changes, suction-filter cleaning, pilot and full-flow filter replacement, pump air bleeding, and emergency boom-lowering instructions.
• Undercarriage and bucket work: Track sag adjustment, bucket teeth and bucket replacement, linkage adjustment, pad crawler shoes, and dozer blade coverage.
• Circuits and troubleshooting: Hydraulic and electrical diagrams accompany symptom, cause, and remedy tables for starting, controls, electrical equipment, and hydraulic operation.
• Attachments and lifting: Separate material addresses the two-piece boom, offset arm, hydraulic breaker, concrete crusher, and lifting hook, including model-dependent configurations.

This manual suits qualified, experienced operators licensed according to local requirements and officially licensed personnel responsible for inspection and servicing.

Operational Interface and Diagnostics

Machine identification, seating adjustments, and operator station controls precede the monitor instructions. These explain alarm messages, maintenance notifications, attachment selection, and pump flow settings for attachment operation.

Optional functions include password-protected ignition and satellite mail; satellite messaging requires the specified terminal. Troubleshooting tables distinguish checks such as battery connections, the pilot control shut-off lever interlock, and fuel supply from faults referred to an authorized dealer.

The Hydraulic Circuit overview and Electrical Diagram, supported by a numbered component legend, help identify pumps, valves, controllers, and associated circuits alongside the troubleshooting tables.

Maintenance Procedures and Service Limits

Maintenance Guide Tables organize lubrication, inspections, fluids, and scheduled servicing. Separate procedures address swing and travel reduction gears, pump transmission oil, fuel filters, and the fuel solenoid pump strainer.

For engine compression measurement, valve-clearance inspection and adjustment, and EGR inspection or replacement, the maintenance listings direct the reader to an authorized dealer.

After a hydraulic oil change, the pump-filling and air-bleeding procedure matters because starting the engine with an unfilled pump can damage it. Emergency boom-lowering instructions cover machines without a hose-rupture safety valve, with separate class-specific arrangements.

Follow the manual's pressure-relief precautions before opening hydraulic lines or fittings.

Bucket Adjustment and Attachment Information

Bucket service covers tooth replacement, bucket replacement, and linkage shimming. The linkage instructions explain where the remaining shims belong and how omitting them can damage the arm end face or retaining bolts.

Attachment chapters cover offset arms, dozer blades, and two-piece booms for the applicable models. Working Ranges, Shoe Types and Applications, and Lifting Capacities provide configuration-specific references: matching the chart to the boom, arm, track shoes, and any stated blade position helps identify the relevant reach or lifting data.

Selected Fan-Belt and Bucket-Linkage Settings

These examples are a small selection of the adjustment data provided in the maintenance section.

Fan-belt deflection is 7–8 mm for the ZX120-3 and ZX180-3 classes and 5–6 mm for the ZX200-3, ZX270-3, and ZX330-3 classes, measured with approximately 98 N applied midway between the fan and alternator pulleys.

For the illustrated bucket-linkage adjustment, clearance (b) must not be set below 0.5 mm (0.02 in), measured with clearance (a) taken up.

PDF Navigation and Diagram Detail

Text search and diagram detail: The body text is searchable, while labels within the image-based circuit diagrams are not. There are no embedded PDF bookmarks. Small electrical-diagram labels require zooming, and a watermark partly overlaps a label in the hydraulic diagram.

Supplied as one printable, 460-page PDF. The total includes one cover page, introductory material, seven memo pages, and two otherwise blank pages.