2 Post Car Lift Pre-Purchase Checklist: Specs to Verify Before You Buy

A 2 post car lift is a five-figure decision on a farm shop, and rural buyers in Ankeny and the surrounding communities have consistently told us the pre-purchase phase is where they wish they had asked more questions. We are Auto Lift Services in Ames, and we have watched enough farm-shop installs over the years to build a checklist that catches the most common regrets. This guide walks through model numbers, capacity ratings, arm specs, and warranty language you should compare before you sign — whether the lift will store equipment through the winter or handle daily service.

Confirm the true weight rating on the model number

Manufacturer model numbers usually encode the capacity, but not always in a way that survives translation. A “9LC” model in one lineup means nine thousand pounds, low ceiling; in another lineup it means nine thousand pounds with a specific arm set. When we quote a 2 post car lift, the first thing we do is show you the manufacturer’s published rating on the actual model — not the marketing name. That published number is what the ALI certification (if the lift carries one) is written against. For a farm shop pulling up a one-ton dually with a service body, the difference between ten thousand pounds and twelve thousand pounds is not theoretical. Check the tag on the column when the lift arrives — the ALI gold-label rating and the manufacturer’s data plate should agree with what is on your invoice. If they do not, call us before the install crew leaves the yard. The other trap is dual-rating: a lift rated ten thousand pounds symmetric may only be rated eight thousand pounds asymmetric because of the arm geometry. Ask for both numbers if you plan to load asymmetrically.

Arm configuration and pickup-point reach

Arm reach determines what you can lift and how easily. On a farm shop where the fleet ranges from a Camry to a one-ton crew cab to a UTV, you need arms that can extend far enough to catch a long-wheelbase pickup and retract short enough to catch a compact car. Three-stage arms are the standard on any 10,000-pound-and-up 2 post car lift; two-stage is a cost-saving option that limits what you can safely lift. Ask specifically about front and rear arm reach in inches at maximum extension and at minimum retraction. Farm shops with mixed vehicles almost always want three-stage front and rear arms with drop-end pads. Drop-end pads let you catch a low-ground-clearance vehicle without wedging a stack of blocks under the arm. The other spec that matters is pad height — how low the pads can sit at rest. A pad that sits at four inches will not fit under a lowered sports car; a pad that sits at three inches will. If any of your customers or personal vehicles are lowered, tell us before the order goes in.

Column height, overhead beam, and your machine shed ceiling

Farm shops often have taller ceilings than most bays — twelve to fifteen feet is common — but the beam on an overhead lift still needs about ten to twelve inches of clearance above it. Check your ceiling at the lowest point (usually a truss or a light fixture) and compare it to the manufacturer’s total column-plus-beam height with the shutoff bar deployed. That number should be printed in the install manual — ask us to send you a copy before you buy. Ankeny-area farm shops we have installed in typically clear an overhead lift with room to spare, but a few older machine sheds have low headers over the service doors that block a fully extended column from going in. Baseplate is the workaround for a truly short ceiling, and we cover it when the numbers do not work. The other consideration is door swing on the roll-up: if the lift columns will sit close to the door, be sure the door can travel fully up without contacting the top of the columns. Measure twice.

Motor voltage and single-phase versus three-phase

Farm shops sometimes have three-phase power available from the pole, and sometimes they only have single-phase. The 2 post car lift you buy has to match. A single-phase 220-volt motor is the default on residential and light-commercial lifts and runs fine on the same fifty-amp circuit a welder uses. Three-phase motors are common on heavier commercial lifts and pull cleaner power under load — cycle times are noticeably faster on a three-phase pump. Before you order, walk out to your panel and confirm what you have. If you are unsure, take a photo of the breaker panel and send it to us. We would rather redirect the order to a single-phase model than send a three-phase pump to a shop that cannot run it. Some pumps can be reconfigured between single and three-phase at the wiring, and some cannot — that also depends on the exact model. If you are building a new shop and have not run the panel yet, we can talk through whether adding a rotary phase converter or running three-phase from the co-op is worth the cost.

Cables, sheaves, and equalizer on a 2 post car lift

The equalizer cables on a 2 post car lift keep the two carriages moving in sync. When you press the up button, the pump raises one column while the cables (or sometimes a hydraulic equalizer) drag the other column along at the same rate. Ask what type of equalization the lift uses. Cable equalization is the most common and the easiest to service — cables are replaceable wear items, priced modestly, and available from us for any major brand. Hydraulic equalization exists on some models and eliminates the cables, which some shops prefer, though it introduces its own maintenance profile. What you want to avoid is a lift where the equalizer parts are proprietary and hard to source; that is a real problem five years down the road when a cable frays. Every lift we sell has commonly stocked wear parts, and we keep them on our shelves. Ask about sheave diameter too — larger sheaves reduce cable wear over the lift’s life. Small details, but they show up in your ownership cost in year three or four, not year one.

Winter storage: what to check before the season starts

If you are using the lift for seasonal storage of a restored pickup or a UTV that lives inside from November through April, do a five-point check before you park the vehicle up there for months. First: are the mechanical locks engaged? The lift should sit on steel, not on hydraulic pressure. Second: are the pads flat and centered under the pickup points? Any tilt will worsen over time. Third: is there fluid on the floor from a hose or a cylinder? Small leaks become bigger over cold months as seals shrink. Fourth: is the power disconnected at the pump switch? An unattended pump plugged in over winter is a fire risk we have seen. Fifth: is the shop climate stable, or will it swing from thirty above to zero repeatedly? Repeated thermal cycling can loosen cable adjustments — inspect them in spring. That five-point check takes about ten minutes and it is the difference between a well-stored vehicle and a bad surprise in April. A well-maintained 2 post car lift will hold a vehicle safely for a full storage season if that routine is followed.

Final checklist before you sign

Before the invoice goes to signature, run through this list one more time: capacity confirmed in writing at the exact configuration you plan to use, arm reach and pad height matched to your vehicle mix, ceiling and door clearance verified with real measurements, motor voltage matched to your panel, cable and equalizer style understood and serviceable, install crew scheduled with a real date, and warranty terms explicit on parts and labor. If any of those seven items is fuzzy, pause and ask. We would rather answer three more questions than deliver a lift that does not fit your bay. Related reading: our symmetric versus asymmetric guide covers arm geometry in detail, and our concrete-slab article explains what farm shops need to know about older barn floors. Every 2 post car lift we sell comes with a written spec sheet, a factory warranty, and our own labor warranty on the install if we handle it. Call 800-674-9302 or email us; we will answer the checklist questions directly rather than hand you a brochure and hope.