Two Post Cable Inspection: What Iowa Shops Need to Check

A thorough two post cable inspection is the single fastest way to catch a lift failure before it happens, and it’s a job we get called out for across Iowa more often than shop owners would like to admit. Cables on a two post lift carry the load between the carriages, and when one starts to fray or stretch, the whole system gets thrown out of sync. We’ve walked into shops in Des Moines, Cedar Rapids, and small towns in between where a cable had been groaning for weeks before anyone bothered to look up and check it. This guide walks through exactly what we check, how often, and when it’s time to stop inspecting and start replacing.

Why a Two Post Cable Inspection Matters More Than People Think

A two post lift holds a vehicle several feet off the ground with nothing but hydraulics and steel cable keeping the two columns level. If a cable fails while a car is up, the results can range from a dropped vehicle to a serious injury for whoever is underneath. That’s why a two post cable inspection isn’t a nice-to-have maintenance item, it’s a safety requirement that OSHA and ALI both expect shops to take seriously. We’ve seen insurance claims get denied because a shop couldn’t prove they’d inspected their lift on any kind of schedule.

Beyond the safety angle, cables that go unchecked tend to fail at the worst possible moment, usually mid-lift with a customer’s vehicle sitting on the arms. A snapped cable means the vehicle drops unevenly, which can bend frame rails, crack a windshield, or damage the arms and columns themselves. Compare that repair bill to the cost of a five-minute visual check every month, and the math isn’t close. We tell every shop we install for in Iowa that a two post cable inspection should be part of the same routine as checking oil in the shop truck — quick, boring, and something you do without being asked.

What We Look For During a Cable Check

When we do a two post cable inspection on a customer’s lift, we’re looking for a handful of specific warning signs. Broken strands are the big one — any visible wire poking out of the cable’s twist means it’s done, full stop. We also look for rust or discoloration, which usually means water has gotten into the cable housing and started corroding from the inside out. Kinks or flat spots where the cable has been pinched are another red flag, since that damage weakens the cable at exactly the point where it’s already under the most stress.

We also pay attention to how the cable sits in its sheave and pulley. If it’s not tracking straight, it can start rubbing against the pulley housing or the column itself, wearing a groove that eventually leads to a break. A quick check involves running a gloved hand along the length of the cable — a rag works too — to feel for burrs that your eyes might miss. Any shop doing regular two post cable inspection work should also check that the equalization is even between both sides, since a stretched cable on one column will show up as the carriages sitting slightly out of level.

How Often You Should Be Doing This

We recommend a visual two post cable inspection before every shift for high-volume shops, and at minimum monthly for lower-volume operations. That doesn’t need to be a formal process — it can be as simple as a tech glancing at the cables while the lift is raised on the next vehicle. A more thorough inspection, where you actually run a hand along the cable and check the anchor points, should happen quarterly. Annual inspections are where we’d recommend bringing in someone from Auto Lift Services to do a full ALI-style inspection covering cables, cylinders, and the rest of the lift’s structure.

Shops that skip inspections entirely tend to be the ones calling us for emergency service, usually after a cable has already started showing damage that could have been caught weeks earlier. We’ve got a full breakdown of recommended timing in our cable inspection intervals guide if you want a schedule to actually post in the shop. The bottom line is that a two post cable inspection takes minutes, and skipping it is how a minor wear issue turns into a lift that’s down for a week waiting on parts.

Signs a Cable Needs Replacement, Not Just Inspection

Sometimes a two post cable inspection reveals damage that’s past the point of monitoring. Any broken strand means immediate replacement — there’s no gray area there, since a cable with even one broken wire has already lost a meaningful percentage of its rated strength. Visible rust that flakes off when you touch it, cables that have stretched enough to throw the carriages out of level even after adjustment, and any cable that’s been kinked sharply enough to leave a permanent bend all need to come off the lift.

We also see cables that look fine on the surface but have internal damage from age. Cable doesn’t last forever even with perfect care, and most manufacturers recommend replacement on a set schedule regardless of visible wear once a lift hits a certain number of cycles. If your two post cable inspection turns up anything questionable, our advice is to replace both cables on that column as a pair rather than just the obviously bad one, since the other side has seen the same use and is likely close behind. We keep OEM-spec cables in stock for Rotary, Challenger, BendPak, and Atlas lifts and can usually ship same week.

DIY Inspection vs. Calling a Professional

A basic visual two post cable inspection is something any shop tech can and should be doing themselves — it doesn’t require special tools or certification. But there’s a difference between a quick look and a genuine structural inspection of the whole lift system, including anchor bolts, cylinder seals, and the equalizer cable that ties both columns together. That level of two post cable inspection is where having a trained technician matters, because problems in one part of the system often show up as symptoms somewhere else entirely.

We do full lift inspections across Iowa year-round, and cables are always part of that visit even when they’re not the reason we got the call. If you’ve never had a proper inspection done, or it’s been more than a year, that’s usually the first thing we recommend before any other lift service. Our cable inspection guide for two post lifts has more detail on the full process if you want to see what a professional visit actually covers.

Common Mistakes Shops Make With Cable Inspections

The most common mistake we see is treating a two post cable inspection as a one-time event instead of an ongoing habit. A shop gets a new lift installed, does a great job checking it for the first few months, and then the routine quietly disappears once the lift feels

Related: two post lift cable inspection · two post lift cable inspection replacement