Used Telehandler Inspection Checklist: What to Check Before You Buy

Buying used · 8 min read

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A telehandler earns its keep on a farm by doing three jobs at once — loader, forklift, and high-reach handler. A telehandler is a crane on wheels, and its most expensive parts — the boom, the hydraulics, and the load-sensing electronics — wear out quietly. A machine that looks straight and starts fine can still have a tired boom or a load chart that no longer matches what it will actually lift. Here is what to check before you buy.

The boom: wear pads, chains, and twist

The boom is the heart of a telehandler, and it is where the most expensive wear hides. Start with the wear pads that let the boom sections slide inside each other. With the boom fully retracted and lowered, look at the gap between the boom sections at the nose — uneven gaps, or a section that sits visibly crooked, point to worn or missing pads. Then extend the boom fully: it should move smoothly, in a straight line, with no shudder or sideways drift.

Check the extension chains or cables at the rear of the boom for frayed strands, heavy rust, or a chain adjusted to the end of its travel. A stretched chain changes the boom timing, so the sections stop extending in sequence. Sight down the extended boom for a bend or a section tracking off to one side. Then look at the boom pivot pins and lift cylinder pins for elongated holes or fresh weld around the bosses, both signs the boom has been run loose. Finally, check the cylinder rods for scoring or rust bands, and the rod ends for play — a scored rod chews through seals.

The load chart: it has to be there and it has to be true

Every telehandler has a load chart that tells you what it can lift at what reach and height. The chart should be fixed in the cab where the operator can read it, and it should match the machine's model and serial number. A missing chart is a red flag on its own — it usually means the machine has had cab work, or the seller does not want you comparing the chart to reality.

Then test the chart against the machine. With a known load — a full pallet of seed, a loaded tote, a bale — lift it to the height and reach the chart allows. The machine should hold the load steady with the boom out. If it drifts, creeps, or the rear wheels start to lift at loads the chart allows, something is wrong — the hydraulics, the load-sensing system, or the counterweight. Do not accept "it just needs a sensor" until you have seen the machine lift a real load to full reach.

Hydraulics: pump, valves, and the drift test

A telehandler lives and dies on its hydraulics. Check the hydraulic oil level and condition — pull the dipstick or sight glass. Oil that is milky means water, oil that is black and smells burnt means it has been run hot, and oil full of glitter means something inside is wearing out.

Run every function — boom, extend, tilt, auxiliary hydraulics, stabilizers if fitted — and feel for smoothness. Jerky movement, a function that pauses and then jumps, or one speed noticeably slower than the others points to a worn pump, a sticking valve, or internal leakage.

Then do the drift test. Raise the boom to mid-height with a load on the forks, shut the engine off, and watch for five minutes. A boom that creeps down has internal cylinder leakage or a valve that is not holding. Repeat with the boom extended — extension drift is harder to see and more expensive to fix. Look at every hose and fitting for wet spots and chafing where they pass through the boom.

Chassis, axles, and steering modes

Telehandlers steer in three modes — front-wheel, all-wheel, and crab — and all three should work. Cycle through each mode and drive the machine in a slow circle. In crab steer, all four wheels should angle the same way and the machine should track straight sideways, not dog-track. A machine that will not hold a steering mode, or that pulls hard in one, has a steering valve or cylinder problem.

Check the axles and the oscillation. The rear axle on most telehandlers pivots to keep all four wheels on the ground over uneven ground. Rock the machine side to side and watch the pivot move freely — a seized pivot makes the machine tippy and puts stress into the frame. Look at the axle housings and the frame for cracks, especially at the welds where the axles meet the chassis and around the boom pivot.

Engine and transmission

Start the machine cold if you can — hard starting, white smoke that hangs around, or a rough idle that only smooths out once warm are all worth noting. Once it is running, check the coolant, engine oil, and transmission oil levels and condition. Look under the machine for fresh drips, and look at the belly pan: a clean belly pan on an old machine usually means it was just washed to hide leaks.

Drive the machine through all its gears, forward and reverse. The transmission should shift smoothly with no slipping, no clunking, and no long delay when you change direction. A machine that hesitates or slams when you change direction has a tired shuttle.

Tires and brakes

Telehandler tires take a beating: heavy loads, sharp stubble, concrete yards, and mud. Check all four for cuts, chunking, and sidewall cracking, and look at the tread — uneven wear across a tire points to alignment or axle problems. Check the date codes — aged-out tires fail under a heavy lift. Test the brakes. Drive slowly on a flat surface and stop firmly with the service brake, then test the parking brake on a slope with a load on the forks — it has to hold the machine loaded, not just empty.

Cab, controls, and safety systems

Sit in the seat and work every control. The joystick should move smoothly through its full range with no dead spots or sticking. Check the auxiliary hydraulic switch, the boom float function if fitted, and the forward-neutral-reverse lever. Every switch and gauge on the dash should work — a dead gauge is often a dead sensor.

Check the load moment indicator — the system that warns you, and in many machines cuts out the hydraulics, when a lift is beyond the machine's safe capacity. It should power up, calibrate, and respond when you lift. A system that has been bypassed, disconnected, or taped over is a machine that has been run past its limits, and it is a safety deal-breaker. Ask the seller directly whether it works; then verify it yourself with a load at reach.

Check the cab structure: the ROPS and FOPS frame should be straight with no cracks or repaired welds, doors and windows should latch, and the seat belt should retract and latch. Look at the wiring under the dash for splices and taped joints.

Attachments: carriage, forks, and quick attach

The carriage and forks are wear items, and they are also the parts that hold the load. Check the fork blades for wear — look at the heel where the blade meets the shank, which is where forks thin out first. Forks that are worn thin at the heel, bent, or cracked are done. Work the quick-attach mechanism. It should lock and unlock positively with no slop, and the locking pins should engage fully. Check the carriage rollers and the tilt cylinder pins for play. If the machine comes with extra attachments — a bucket, a bale spike, a grain pusher — inspect each one the same way, and confirm they actually fit this machine's carriage.

The live lift test

Put it all together with a real lift. Pick up a known load, raise it to full height, extend the boom to full reach, and hold it. Watch for drift, listen for the pump straining or the relief valve chattering, and feel for any shudder in the boom. Lower the load slowly and set it down gently — the controls should let you feather the load, not drop it in steps. A machine that feels stable, steers true, and holds its load is a machine that has been looked after.

Records to ask for

Ask for service records: hydraulic oil and filter changes, boom chain or cable replacements, wear pad work, tire replacements, and any work on the load management system. Ask what the machine spent its life doing — a telehandler that stacked bales in a shed lives a very different life from one that loaded trucks on a quarry. A machine with a clean record, a present load chart, and a working safety system is worth a closer look. One with a missing chart, a bypassed load system, or a boom that drifts is a machine to walk away from.