If you’re shopping Facebook Marketplace or a farm auction near Okoboji or Spirit Lake for a used two-post lift to do your own oil changes, the seller’s asking price means nothing until you’ve checked the car lift parts that actually keep the vehicle in the air. We get calls every week from weekend hobbyist mechanics all over the Iowa Great Lakes region who bought a lift for a few hundred bucks, dragged it home, and then discovered the arm restraints were missing or the safety latch wouldn’t engage. A lift with worn or missing car lift parts isn’t a bargain — it’s a liability sitting in your garage. Before you load anything onto a trailer, run through this checklist.
Send us photos and dimensions of your used lift and we’ll help identify what car lift parts you actually need before you buy or install it.
Why Arm Restraints Are the First Thing We Check
Arm restraints are the small mechanical stops or pins that keep the lift arms from swinging out from under a vehicle once it’s raised. On a lot of older two-post lifts, especially unbranded units that have passed through two or three owners, these car lift parts get removed during a repair and never put back on. A missing arm restraint doesn’t announce itself — the arm still swings, still locks under the vehicle, and the lift still looks functional sitting on the showroom floor of someone’s pole barn. The failure shows up later, usually when a car is bouncing on the rack during a tire job and the arm walks out from under the pinch pad.
When you’re inspecting a used lift in person, physically grab each arm and try to rotate it past its normal swing range. If it stops hard against a restraint, good. If it keeps going, that arm restraint is gone or broken, and you’re now shopping for replacement car lift parts before the lift is even safe to plug in. We stock arm restraint kits for Rotary and BendPak-family lifts, and in most cases we can match a restraint to a lift even if the seller has no model number, as long as you send us measurements and a photo of the arm casting.
Safety-Cam Engagement Is Non-Negotiable
The safety cams — sometimes called safety latches or safety dogs — are the mechanical teeth that catch the carriage as it rises, so if the hydraulic system loses pressure the vehicle doesn’t free-fall. This is the single most important safety feature on any two-post lift, and it’s exactly the kind of car lift parts a private seller either doesn’t understand or doesn’t mention. We had a homeowner near Spirit Lake call us describing a blue 9,000-lb two-post lift he’d just bought with no brand or model tag, and the cable running to the safety latch mechanism was frayed through. He needed both the release cable and, as it turned out, a replacement latch pawl before that lift touched a vehicle.
Cycle the lift up and down a few times during your inspection and listen for the cams clicking into place at each notch. Pull the release handle and confirm the carriage actually drops onto the next lower notch instead of continuing to fall. If the cable is rusted, kinked, or missing altogether, budget for that repair immediately — don’t plan to “get to it later.” These cables are inexpensive relative to everything else on the lift, and we carry them for most major brands even when the rest of the lift is a mystery.
Cables, Sheaves, and the Hidden Cost of “As-Is”
Used lifts are almost always sold as-is, which is fine as long as you understand what “as-is” is hiding. Equalizer cables stretch and fray over years of use, and the sheaves — the small pulleys the cables run through — wear grooves that chew up a new cable in a matter of months if you don’t replace both together. We’ve had customers order a full new set of cables only to call back three weeks later because the old sheaves shredded them. If you’re buying used, ask to see the cables up close, check for visible fraying or flat spots, and spin each sheave by hand to feel for grinding or play in the bearing.
If the lift has no identification tag — common on lifts that have been repainted or relabeled over the decades — measure the cable diameter and overall length yourself, and take a photo of the sheave and its mounting bracket. We use those dimensions to cross-reference a lift even when the model number is long gone, and it saves you from ordering the wrong car lift parts twice. Hydraulic hose length and pump specs work the same way: measure, photograph, and send it over rather than guessing off a parts diagram that may not match your actual lift.
What a Missing Power Unit or Cylinder Really Costs You
Some sellers will hand over a lift missing its power unit entirely, assuming you’ll just source a generic hydraulic pump. That’s usually the most expensive mistake a hobbyist can make on a used lift purchase. Power units are matched to the cylinder bore, the lift’s rated capacity, and often to a specific check valve and lowering valve setup. A mismatched pump can either fail to lift the rated weight or, worse, overpower a cylinder seal that wasn’t built for that pressure. Before you commit to buying a lift with a missing or non-functioning power unit, get a quote on the replacement cost and factor it into your offer.
The same logic applies to cylinders. A cylinder that’s leaking or scored internally can sometimes be rebuilt rather than replaced outright, which is considerably cheaper, but you won’t know which option makes sense until someone with the right car lift parts catalog looks at the model. If the lift you’re eyeing has an obvious hydraulic leak at the base of either post, plan on that conversation before you finalize a price with the seller, not after you’ve already hauled it home.
Pinch Points, Pads, and Everyday Wear Items
Beyond the big safety systems, a used lift accumulates smaller worn car lift parts that affect how well it actually works for routine oil changes and fluid service. Rubber arm pads crack and compress with age, which means the contact points that should cradle your vehicle’s frame flatly are now uneven or slick. Locking pins on adjustable arms wear oval instead of round, letting the arm slip slightly under load. None of these failures will strand your car in the air, but they make every lift cycle feel less secure and they accelerate wear on the parts around them.
Ask the seller how long the lift has sat unused. A lift that’s been sitting in an unheated shed for two winters in the Iowa Great Lakes region often has surface rust on exposed cylinder rods and stiff cam mechanisms that need to be cleaned and re-lubricated before the safety systems will move freely again. Budget time, not just money, for that reconditioning before your first oil change on the rack.
Get an Honest Read Before You Sign Anything
The smartest move a weekend hobbyist mechanic can make is sending us photos and measurements before finalizing a used lift purchase, not after. We’ll tell you honestly whether the car lift parts you’re worried about are cheap and available or whether you’re looking at a lift that’s not worth saving. We do this constantly for private buyers across Iowa and southern Minnesota who found a lift online with no paperwork and no idea what brand it started life as.
In a lot of cases we can identify a lift from cable dimensions, sheave casting shape, or arm profile alone, even when the data tag rusted off decades ago. That identification is the difference between ordering the right part once and ordering three wrong parts while the lift sits half-assembled in your garage over a Minnesota-border winter.
Installing It Right Once You’ve Bought It
Once you’ve verified the arm restraints, safety cams, cables, and hydraulics are sound — or replaced what wasn’t — the final piece is a proper installation. Anchoring into a slab that isn’t rated for the lift’s capacity, or skipping the manufacturer’s specified anchor depth, undoes all the careful parts inspection you just did. We install and service lifts throughout Iowa and can walk you through anchor and clearance requirements over the phone if you’re doing the install yourself.
A used lift bought smart, inspected carefully, and fitted with the right car lift parts before day one can easily outlast a lift bought new and neglected. The difference is entirely in what you check before you hand over the cash.
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