The used excavator market in China is booming. Buying second-hand excavators comes with lower entry barriers, less financial pressure and faster return on investment, which is a great choice for startup businesses.

Nevertheless, the market is stocked with a massive number of domestic and imported used excavators. Many sellers use professional refurbishment methods to disguise faulty or worn-out units, making it hard for buyers to tell good machines from bad ones. Below is a full checklist to help you avoid scams when purchasing used excavators in China.

Common Refurbishment & Fraud Tactics to Watch Out For

1. Repainted Body

Repainting is the most common trick. Some sellers use high-quality or original factory paint, and even bake the paint professionally. They then leave the machine under sun and rain to make the new paint look identical to the original factory finish.

How to check: Look for inconsistent gloss, overly thick paint layers and paint splatters around oil pipes and gaps. These tiny details will expose repainted machines.

2. Tampered Hour Meters

Lower displayed working hours mean a higher selling price. Many dishonest sellers adjust the hour meter to hide the machine’s real service time.

- Excavators in northern China usually have fewer working hours than those in the south due to frozen ground in winter. Unreasonably low hours should raise your suspicion.

- Be cautious of machines used in mines. They often run 24 hours a day under heavy loads, resulting in severe wear despite low displayed hours.

3. Replaced or Overhauled Core Parts

The engine, hydraulic pump and distribution valve are key components. Sellers may replace original parts with inferior accessories, or repair faulty parts and clean up oil leaks to cover overhaul traces.

Inspection tips:

- Let the engine run for half an hour. If the engine compartment overheats severely, or the machine emits heavy black smoke and excessive exhaust gas (with a clean air filter), the engine is likely repaired. Check the water tank for churning water, and inspect the oil filler for detergent residue.

- Check all bolts. Original machines are painted as a whole after assembly. Rusty bolts or obvious wrench marks prove the parts have been disassembled and repaired. This rule also applies to the distribution valve and swing motor.

4. Fake Nameplates

The nameplate on the lower right of the cab can be easily counterfeited. Do not trust it blindly.

Inspection tips: Write down the serial number and verify it with official brand agents. You can check the production date, maintenance records, service locations and original buyer information. Note that a smaller number at the end of the serial number means an earlier production date.

5. Reconstructed Accident Frames

Excavators involved in rollovers or collisions will have deformed frames. Sellers will straighten the frame, repair damaged areas and repaint the whole machine. Some even replace the entire frame.

How to check: Uneven cab doors and inconsistent gaps when closing doors are obvious signs. Also check anti-collision beams, side doors and bottom guards for sheet metal repair and repaint marks. Uneven surfaces inside side doors indicate frame correction.

6. Repaired Cracks on Booms

Cracks on main and auxiliary booms are usually fixed by welding, putty filling and repainting. Sellers may cover the repaired area with mud for over 20 days to hide traces. 

Inspection tips: Run your hands over the boom surfaces to feel for uneven areas, joints or subtle color differences.

7. Over-Cleaned Components

Old machines with oil leaks or minor faults will be fully disassembled and thoroughly cleaned by sellers to hide defects.

Normal used machines inevitably have dust and oil stains in dead corners. If a machine is unnaturally spotless, you need to stay alert.

8. Refurbished Tracks

Worn tracks are refurbished by welding extra parts, polishing, applying electrolyte to create artificial rust, and driving the machine through mud. The refurbished tracks look almost brand new with no visible wear.

Practical Buying Suggestions

1. Set a clear target model

Learn the configurations of the corresponding new excavator in advance, including brands of the engine, hydraulic pump and travel motor. Compare the parameters on site, which can greatly reduce the risk of buying refurbished machines.

2. Stay away from seemingly perfect machines

Machines that look flawless and ultra-clean are highly suspicious. Hour meters and nameplates can be faked. If you lack professional knowledge, please invite experienced excavator mechanics to inspect and test the machine with you. Large second-hand machinery markets usually have more sophisticated refurbishment tricks.

3. Prioritize performance over appearance

Do not be attracted by low prices or nice looks. An unusually low price always means hidden problems. Test the machine for a long time to check its power and running status.

Frequently Asked Questions

Can I fully trust the working hours shown on the meter?

No. Most hour meters can be manually adjusted. Do not take the displayed hours as the only reference. You need to combine the wear of core parts, engine performance and official records to judge the real service life of the machine.

How to identify an accident-damaged excavator?

Focus on the cab doors, frame and side doors. Uneven door gaps, repaired marks on the inner side of doors and deformed frames are typical features of accident machines. You can also check bolts for repeated disassembly traces.

Why should I be wary of an overly clean used excavator?

Regular used machines have natural dust and oil stains in hidden corners. Extremely clean units are usually fully disassembled and cleaned to cover oil leaks, aging parts and other faults. Too neat appearance is a common disguise for defective machines.

Is the nameplate a reliable proof of the machine’s age?

No. Nameplates are easy to copy and replace. The most reliable way is to record the serial number and check official production date, sales and maintenance records via brand authorized dealers.

What is the safest way for foreign buyers to purchase used excavators in China?

First, confirm your target model and learn about new machine configurations beforehand. Second, avoid machines with unreasonably low prices or perfect appearance. Third, hire professional local mechanics to inspect and test the machine thoroughly. Finally, verify the serial number with official agents to rule out refurbished and accident units.