The best price in the world means nothing if the machine hides an expensive problem. Buying used heavy equipment can save you a fortune over new — but only if you inspect thoroughly before you commit. Use this 10-point checklist on any excavator, loader, or dozer you're considering. Bring a flashlight, wear clothes you don't mind getting dirty, and take your time.
1. Undercarriage (on tracked machines)
The undercarriage is one of the most expensive systems to rebuild, so start here. Check track tension, look for worn or cracked pads, and inspect sprockets, idlers, and rollers for wear and leaks. On tracked excavators and dozers, a worn undercarriage can mean a five-figure repair — factor it hard into your offer.
2. Hydraulics and cylinders
Wipe down cylinder rods and look for scoring, pitting, or weeping seals. Cycle every function — boom, arm, bucket, swing, auxiliary — and watch for drift, hesitation, or unusual noise. Check hoses for bulges, chafing, and fresh-looking replacements that might hint at a recent failure.
3. Engine and exhaust
Cold-start the machine if you can — it reveals hard-starting and smoke that a warmed-up engine hides. Blue smoke suggests oil burning; excessive black smoke can point to fuel or air problems. Listen for knocks and check for oil or coolant leaks around the block.
4. Fluids and filters
Pull the dipsticks. Milky oil means coolant intrusion (bad news). Gritty or burnt-smelling hydraulic fluid signals neglect. Fresh fluids are good — unless they were changed to mask a problem right before sale, so cross-reference with the maintenance records.
5. Verify the hours
Confirm the hour meter reading matches the wear you're seeing and the service records. Pedal wear, seat condition, and control grip wear should be consistent with the stated hours. A suspiciously low reading on a visibly tired machine is a red flag — hours are central to value, as we cover in this guide on operating hours.
6. Structural integrity
Inspect the boom, arm, and frame for cracks, welds, and repairs. Fresh paint in localized areas can hide repaired damage. On loaders and dozers, check the blade, bucket, and linkage for straightness and heavy repair work.
7. Pins and bushings
Excess play in pins and bushings is common and fixable, but it adds up. Work the attachment and watch the joints for slop. Significant wear across many joints suggests hard use and looming rebuild costs.
8. Electrical and cab
Test every switch, light, gauge, and the AC/heat. Check the display for active fault codes or warning lights. A tidy, functional cab reflects an owner who cared; a cab full of overrides and dead gauges is a warning.
9. Tires or tracks wear
On wheeled machines, matched tires with even wear are ideal; mismatched or heavily worn tires are a negotiating point. On tracked machines, measure remaining track life if possible — it ties directly back to that undercarriage cost.
10. Documentation and ownership
Ask for service records, the operator's manual, and clear proof of ownership. Verify the serial number matches the paperwork. Complete documentation isn't just paperwork — it's evidence of how the machine was treated and it protects your resale value down the road.
After the inspection
Total up the deferred costs you found and bring them to the negotiation. A machine that checks out cleanly is worth paying up for; one with several issues should be priced accordingly — or passed on. If you're also curious what a given machine should cost, run it through our free Equipment Value Estimator for a baseline before you negotiate.
Ready to shop? Browse verified equipment listings on EquipMarket, and remember that buyer financing is available for qualified purchasers — so a strong machine at a fair price can be within reach without tying up your cash.
