Excavatrice d'occasion Komatsu PC240 à vendre

When should a fleet move into the twenty-four-ton class?

The heavier class is justified when repeated excavation, loading or tool duty can use its capacity enough to offset added transport, fuel and ground-management cost. Write down the project volume, material density, cut depth, spoil radius, truck height, lifts, grades and planned shifts before looking at listings. Separate bulk production from grading, travel, lifting and attachment hours. A heavier crawler may maintain productive cycles in demanding soil and offer useful reach, yet it creates no value while waiting for undersized trucks or working far below capacity. If the deepest cut or heaviest lift happens only occasionally, hiring specialized support may be cheaper than owning extra mass every day. If dense material and long shifts dominate, a smaller machine can become the bottleneck. Compare cost per completed unit of work, including operator time and support equipment. The purchase should be driven by repeatable demand rather than the assumption that a larger excavator always finishes every job more economically.

Translate the earthmoving target into a working plan

Production estimates need realistic bucket payload, cycle geometry, material swell and operational delays—not a theoretical maximum figure. Begin with bank volume and expected swell after excavation. Identify whether the material is loose soil, wet clay, mixed fill, fractured rock or another condition that changes bucket fill and cycle resistance. Confirm the fitted bucket's width, profile, teeth, capacity marking and wear. Use material density and a realistic fill factor to estimate payload, checking that it remains appropriate for the carrier. Map digging depth, bench height, swing angle and dump point. Include time for repositioning, truck exchange, trimming, service checks and traffic. A nominal 1.05m3 tool may be suitable for some jobs and poorly matched for others. Production claims without stated assumptions are not useful for procurement. A clear work plan lets buyers compare candidate machines, bucket packages and fleet arrangements using the same site conditions.

Balance the excavator with trucks and support equipment

The loading system performs best when bucket payload, passes per truck, haul cycle and site traffic are coordinated. Calculate the expected loaded bucket mass and compare it with truck payload and side height. Too many passes increase waiting and swing cycles; too few large passes can overload equipment or create uneven loading. Position trucks to reduce swing where safe, maintaining stable edges, visibility and separation from other traffic. Review whether the excavator can reach and dump comfortably at the actual bench without working continuously at its maximum envelope. Estimate haul-cycle variation so either trucks or excavator do not spend the shift idle. Include dozers, loaders, compactors or breakers that share the production chain. When the crawler supports pipe work instead of bulk loading, consider trench boxes, bedding supply, lifting controls and backfill sequence. Fleet balance often contributes more to daily output than a small difference between model brochure figures.

Keep reference specifications separate from unit facts

Use 24t and 1.05m3 for model-level comparison, then rely on plate-linked documents and measurements for the purchase decision. Operating weight changes with boom, arm, shoes, counterweight, guarding, coupler, bucket and auxiliary plumbing. Dimensions and working range also vary across generations and regional configurations. Obtain a clear identification plate before selecting a manual, brochure or load chart. Verify that technical sources match the complete designation and serial range. Measure transport length, width and height in the proposed loading configuration, identifying any removed components. When hydraulic flow, engine output, digging depth or lift capacity controls the job, record the source and configuration assumptions. Do not transfer numbers from a nearby PC220, 240LC or other similar listing. General data helps a searcher understand the size class; the serial-specific file must control attachment compatibility, stability, freight, parts and commercial acceptance.

Prove which machine the evidence describes

Connect the identification plate, monitor, exterior and operating test in one continuous sequence before relying on year or hour statements. Request current photographs of every side and a readable plate, followed by video that moves from the plate into the cab, shows the display before start-up and continues into operation. This reduces the risk that attractive media from different units becomes mixed in a sourcing file. Compare displayed hours with wear on seat, joysticks, pedals, steps, access panels, boom joints, bucket linkage, swing area and running gear. Work type and maintenance affect wear, so inconsistencies lead to questions rather than a definitive meter judgment. Review service invoices, inspection reports, oil records and historical meter photographs when available, checking serial references and chronology. The site's 2025 and 500 catalog labels remain unverified until supported for one unit. If manufacture date or emissions class controls import eligibility, ask the destination authority or broker which original evidence is accepted before deposit.

Test engine and cooling behavior across a working cycle

A cold start followed by loaded operation gives a stronger view of warning status, smoke, temperature control and response than a short warm demonstration. When practical, ask that the machine remain unstarted before filming. Show ambient context, engine compartment, key-on indicators, cranking, initial exhaust and idle. Note extended cranking, warnings that remain, irregular sound, persistent smoke and visible leakage. Conditions and camera quality can affect interpretation, so qualified inspection is necessary before diagnosing faults. Warm the crawler gradually and perform realistic work under a controlled load while watching temperature and monitor status. Inspect radiator and cooler cleanliness, hoses, clamps, belts, mounts, wiring and accessible intake or turbo plumbing. Review fluids through safe procedures and consider sampling where risk justifies it. Filter dates and maintenance records add context but cannot prove the condition of every system. Cooling deserves additional scrutiny for dusty sites, hot climates or sustained high-flow tool duty.

Evaluate hydraulic power after the system is warm

Test each circuit and combined production movements while recording response, drift, heat-related change, abnormal sound and leakage. Operate boom, arm, bucket, swing and each travel side separately, then combine motions used in digging and truck loading. Watch for delay, surge, weak response, unusual pump or relief noise and changes as oil temperature rises. Avoid unsafe stall or overload tests. Inspect exposed cylinder rods for scoring, pitting and impact damage. Examine glands, hoses, fittings, valve areas, pumps and center-joint regions for fresh oil or heavy residue. A controlled drift check can support screening, but load, position, temperature and service limits matter. If combined functions are inconsistent or a circuit seems weak, qualified pressure, flow and diagnostic testing may be appropriate. Record how long the machine ran, what material or load was used and any test limitation. Detailed conditions are more useful than a generic statement that hydraulics are powerful.

Inspect the complete structural load path

Boom, arm, linkage, upper frame, slew system and lower frame should be reviewed together for stress, repair and movement. Request clean close images of boom foot and bend, arm, cylinder mounts, bucket linkage, coupler area, upper-frame connections and accessible lower-frame structures. Look for distortion, cracks, irregular welds, reinforcement plates, localized new paint and surface mismatch. A properly documented repair may be serviceable; unexplained plating or cosmetics require deeper inspection. During safe operation, observe movement at boom, arm and bucket pins without placing anyone in a pinch zone. Rotate the upper structure through a complete circle on suitable ground and note roughness, noise, inconsistent speed or braking. Check the swing-drive area for oil and assess bearing movement using a competent manufacturer-appropriate method. Previous breaker, quarry or demolition work can justify additional review of structure, guards, hydraulic circuits and cooling. Appearance alone cannot establish structural integrity.

Create an undercarriage reserve from measured wear

Component measurements and local replacement pricing turn running-gear condition into a useful ownership forecast. Photograph both complete sides and detailed track shoes, links, pin and bushing areas, sprocket teeth, carrier rollers, bottom rollers, idlers, guards, frames and adjusters. Look for uneven wear, leaks, damaged shoes, sharp sprocket profiles and incorrect tension. Ask a qualified inspector for measurements and the appropriate service limits when possible. Avoid relying on a remaining-life percentage without its calculation. Travel forward and backward, steer both directions and test available speeds on suitable level ground. Observe pulling, a slow side, repeated clicking or grinding and final-drive leakage. Ground conditions and tension can affect travel, so anomalies require follow-up rather than immediate remote diagnosis. Estimate the next intervention using destination parts, freight, labor and downtime. A heavy crawler with deferred track work can erase a low purchase-price advantage quickly.

Engineer the attachment package for the intended duty

Tool dimensions, mass, hydraulic needs, cooling and protective equipment must match the exact carrier and working cycle. Record pin diameter, center distance, stick width, coupler interface and the mass of every bucket or powered tool. For breakers, shears, pulverizers, grapples or compactors, obtain required flow and pressure, return arrangement, case-drain needs, connector standard and duty cycle. Identify installed auxiliary circuits, controls and configurable settings. Sustained high-flow operation has different cooling and maintenance demands from occasional attachment use. Tool weight and operating radius affect stability, structural loads and transport. Review destination rules for guards, alarms, lifting or demolition protection. List all hoses, adapters, pins and loose items included in the quote and packing record. If compatibility remains uncertain, price engineering, plumbing, configuration, testing and commissioning. A photograph of a tool beside the crawler does not confirm inclusion or safe matching.

Verify maintenance readiness before the first project

Local parts, diagnostic capability, service intervals and technician access determine how quickly a purchased machine can deliver dependable work. Photograph monitor warnings and modes, and test lights, horn, wipers, travel alarm, camera if fitted, climate control and other quoted electrical functions. Inspect controls, pedals, seat, glazing, mirrors, steps and handrails. Contact destination workshops with the serial range and ask about routine filters, sensors, harnesses, seals, hydraulic components, undercarriage, final drives and diagnostic access. Create a commissioning plan covering fluids, filters, sampling where appropriate, identified repairs and replacement of undocumented wear items. Note components with long lead times and estimate downtime consequences. Operator-language, manuals and safety training also matter. Requirements for lifting, roadwork, demolition or quarry use vary by jurisdiction, so determine guards, alarms, inspections and documentation before mobilization. Familiar branding helps only when the exact unit can be supported locally.

Compare total cost per productive hour

Combine evidence, delivered cost, utilization, operating expense and downtime instead of ranking machines by advertised price. Separate the base crawler, bucket, coupler, attachments and spare parts. Add independent inspection, first service, immediate repairs, track reserve, origin haulage, loading, dismantling, freight, insurance when requested, destination handling, duty, tax and inland delivery. Use the same Incoterm and named place for every quote. Estimate local labor, parts lead times, fuel, operator cost, scheduled maintenance and expected downtime. Divide annual ownership and operating cost by realistic productive hours or output. Unsupported year or meter values should not create a price premium. A costlier machine with coherent identity, warm-operation evidence and measured wear may deliver lower lifetime cost. Record unknowns and decide whether each needs proof, a contract condition, a financial allowance or rejection. This risk-adjusted model answers buyer intent more honestly than one universal market price.

Design transport and handover before payment

Measured shipping configuration, safe dismantling and serial-linked records should be agreed before the commercial offer becomes final. Obtain actual overall length, width, height and weight and compare low-bed, container, flat-rack or other options with a competent freight provider. A nominal 24-ton label cannot determine route permits, port handling or carrier acceptance. Agree whether bucket, arm, counterweight, cab, handrails or other components require removal and who will dismantle, label, protect and reassemble them. Correctly cap hydraulic openings, support heavy components and protect exposed rods. Immediately before loading, photograph the plate, monitor, attachments, all sides and existing damage, and create a component list tied to the invoice. Request lifting, placement and securing records where available. Inspect cargo and identity at destination before inland movement. Final release should require completed job-fit, identity, mechanical, economic, service-support and logistics gates.

Komatsu PC240 buyer FAQ

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