Car Lift Pre-Purchase Checklist for a Northwest Iowa Farm Shop

A rural farm shop owner in northwest Iowa called us in the fall wanting to buy a car lift for his machine shed. He was doing metal work and light restoration on a couple of old grain trucks and a project pickup, and he was tired of laying on the concrete under jack stands. He asked for a pre-purchase checklist he could work through before spending the money. Here it is, drawn from the questions we asked him and the site survey we did before the install went in this spring.

Item One: Confirm the Slab and Sub-Base

Farm shop concrete is a wildcard. Some pours are 6 inches over compacted road base with rebar mats, and some are 3 inches over dirt with no reinforcement. Before you commit to a car lift purchase, drill an inspection core in the intended lift bay location. We use a small hammer drill with a masonry bit and measure the depth of solid concrete before we hit sub-base or void. If the core reads 4.25 inches or more of solid concrete with visible aggregate, you’re good for a standard 10,000 lb two-post. If it reads less, you’ll need to either saw-cut a lift pad and re-pour, or step down to a lower-capacity lift on a spread-load base plate. On the northwest Iowa job, the slab was 5 inches of decent-quality concrete with light rebar at 24-inch spacing. Good enough for a 12K two-post with no additional pad work.

Item Two: Measure Ceiling Height Under the Worst Truss

Farm shops built as machine sheds often have trusses that drop lower than the peak height listed on the building spec sheet. Measure ceiling clearance from the finished slab straight up to the lowest overhead obstruction, and repeat the measurement at three bays. On the northwest Iowa building, the peak was 16 feet but the truss chord ran across at 12 feet 8 inches. That was still enough for a standard two-post car lift with 74-inch rise, but only by inches. Any lower and we would have stepped to a low-ceiling variant. The owner also had a beam running across the truss chord to support a chain hoist. We placed the lift two truss bays over from the hoist beam so both could coexist. Overhead obstructions are location-specific and require a site walk. Don’t rely on a nominal ceiling number from the building plans.

Item Three: Match Capacity to the Heaviest Vehicle You Actually Own

A car lift for a farm shop should be sized to the heaviest vehicle in the fleet, plus a 20 percent margin. On this farm, the heaviest vehicle was an early 1970s grain truck with a full box, roughly 8,500 pounds empty. Add a 20 percent margin and we’re at 10,200 pounds. We recommended a 12,000 lb lift, which gave the owner room to bring in the neighbor’s medium-duty pickup for occasional work without sweating the load rating. Do not size the lift to your daily driver. Size it to the biggest thing you’d ever want to put in the air. Under-capacity lifts don’t just fail structurally. They also wear their cables and hydraulic components faster than name-brand lifts do at rated load, because everything is running closer to its design limit on every cycle.

Item Four: Know What Hydraulic Cylinder Seals and Rebuild Kits Cost

A common concern from farm shop buyers is what parts will cost 10 or 15 years down the road. The good news is that hydraulic cylinder seal kits for a name-brand car lift like Rotary or Challenger are stocked in Iowa and cost in the low three figures for a full kit. A complete cylinder rebuild kit runs slightly higher and includes seals, wipers, and the retainer hardware. Cables run mid-three figures for a full set on a two-post. Lock latch springs and pawls are inexpensive and stocked. On import lifts, the parts story is very different. Cylinder seals may be sourced from a single overseas supplier and take weeks to arrive. Before you buy any lift, ask the seller for the seal kit and cable part numbers and check whether they are in stock in the US. We publish our parts availability openly on the store, and every major maintenance part for the lifts we sell is stocked domestically.

Item Five: Restoration and Metal Work Considerations

Restoration and metal work on a farm shop car lift adds two considerations. First, spark and slag protection: when you’re welding under a lifted truck, sparks fall on the concrete, the lift arms, and any hydraulic hoses in reach. Use a welding blanket on the slab and route hydraulic hoses well clear of the work zone. Second, prolonged static load: restoration projects sit on the lift for weeks. That is technically fine on a two-post with the safety locks engaged, but it accelerates rubber pad wear and can cause the equalizer bar to settle slightly. For restoration work as the primary use case, a four-post is often the better answer. On this farm, the owner does short-cycle mechanical work and light metal repair, not full-teardown restoration. Two-post was the right call. If his project mix changes, we’ve already planned the second bay for a four-post drive-on.

Item Six: Plan the Electrical Before You Order the Lift

Farm shop electrical is often marginal. On the northwest Iowa job, the main panel was 100 amp and shared with a grain dryer, a shop compressor, and the house well pump. We required a dedicated 30 amp single-phase circuit for the car lift, and the owner brought in a local electrician to add the circuit and upgrade a couple of the shared loads. Total electrical cost was reasonable and the panel wasn’t stressed after the upgrade. If your farm shop is on a lightly loaded panel and you don’t have room for a new 30 amp circuit, budget the electrical work before you finalize the lift purchase. It’s usually a small line item but it must happen before install day, not after.

Item Seven: Finalize the Order and Schedule the Install

Once the checklist above is worked through, the lift order itself is quick. We send a written quote covering freight, install, first-year maintenance, and warranty. Lead time is 2 to 4 weeks depending on the model. Financing is available with 12 months no interest and 90 days no payment, which is a good fit for farm cash flow tied to harvest revenue. Call 800-674-9302 or email founder@autoliftserv.com and describe your shop, your fleet, and your intended work. We’ll run the pre-purchase checklist with you over the phone, quote the whole job in writing, and schedule an install day that fits your farm calendar.