Buying a used excavator can save substantial money compared with buying new, but the asking price is only part of the equation. A machine that looks inexpensive can become expensive quickly if it needs an undercarriage, hydraulic repairs, structural work or major engine service.
The better question is: what condition is this machine actually in, what work is likely ahead, and does the purchase price make sense after those facts are considered?
Before the inspection: confirm the machine fits the job
Make sure you are evaluating the right excavator class. Consider digging depth, reach, lifting, attachments, ground conditions, transport weight and whether the machine will be primary production equipment or a backup.
The BigEquipCo 15-point used excavator inspection
1. Confirm the machine's identity
Verify manufacturer, model, serial/PIN, year if documented, indicated hours, configuration and major attachments. Use the serial number where possible to research history.
2. Ask for service and repair records
Look for scheduled service, engine work, pump work, cylinder repairs, final-drive history and undercarriage replacement. Hours alone do not tell you how a machine was maintained.
3. Inspect the undercarriage carefully
Review shoes, links, pins, bushings, rollers, idlers, sprockets, tension, bolts and guards. Uneven wear, damaged shoes and badly worn sprockets can signal significant near-term expense.
4. Inspect boom and stick for cracks or repairs
Look around welds, high-stress connection points, plates, bends, cracks and fresh paint concentrated around structural sections.
5. Check pins and bushings for excessive play
Inspect boom, stick, bucket and coupler joints while the linkage changes direction. Questionable movement should be measured against manufacturer tolerances.
6. Check the swing system
Rotation should be smooth. Investigate hesitation, abnormal noise, harsh engagement or unusual play.
7. Inspect hydraulic cylinders
Check rods for scoring, pitting and scratches. Look for leakage around seals and fittings.
8. Inspect hoses, pumps and hydraulic connections
Look for wetness, oily dirt, damaged hose coverings and poor clamping. Never use your hand to search for high-pressure leaks.
9. Start the machine cold if possible
Observe starting behavior, warning lights, smoke, rough idle, vibration and abnormal sounds before the machine has been fully warmed.
10. Check fluids and ask about fluid analysis
Oil and coolant condition matter, and a history of laboratory samples can reveal trends that a visual inspection cannot.
11. Test all hydraulic functions
Safely cycle boom, stick, bucket, swing, travel, auxiliary hydraulics and blade where equipped. Watch for hesitation, drift, jerking, weak response and abnormal noise.
12. Travel the machine forward and backward
Check whether it tracks consistently and responds evenly in both directions. Pulling to one side deserves investigation.
13. Inspect bucket, coupler and work tools
Review bucket shell, teeth, cutting edges, linkage, coupler, pins and hydraulic lines. Confirm what is included in the sale.
14. Inspect cab, controls and safety equipment
Check seat belt, monitors, HVAC, switches, mirrors, cameras, windows and ROPS/FOPS condition.
15. Reinspect after operation
Once the machine is warm, walk it again. New leaks, smells, heat or sounds may only appear under operating temperature and pressure.
The BigEquipCo Used Excavator Scorecard
| Inspection area | Strong | Investigate | Concern |
|---|---|---|---|
| Identity / documentation | □ | □ | □ |
| Service history | □ | □ | □ |
| Undercarriage | □ | □ | □ |
| Boom / stick / linkage | □ | □ | □ |
| Hydraulics | □ | □ | □ |
| Engine / startup | □ | □ | □ |
| Travel / final drives | □ | □ | □ |
| Cab / safety | □ | □ | □ |
How many hours are too many?
There is no single hour threshold. Hours have to be interpreted alongside maintenance, application, environment, component replacements, undercarriage condition and hydraulic condition.
Purchase price is not ownership price
Compare purchase price + immediate repairs + near-term wear items + transportation + downtime risk. A higher-priced machine with documented component work can be a better buy than a cheaper machine carrying several expensive unknowns.
