When a small RV and trailer service shop in Waukee called us about putting in a 2 post car lift, they weren’t looking to flip cars all day. They needed something tall enough and strong enough to get under duallys, tow vehicles, and the occasional travel trailer axle for differential fluid changes and gear service. A year later, that same lift is still running strong, and their first-year experience is a pretty good roadmap for anyone in Iowa trying to figure out overhead versus baseplate configuration before they buy. We’ve installed and serviced enough of these units around the state to know where the real decision points are, and this shop’s story hits most of them.
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Why an RV and Trailer Shop Chose a 2 Post Car Lift Over a Pit
The shop’s owner had two options going in: build a service pit or go with a 2 post car lift. Pits are common for RV work because they let a technician walk underneath a long chassis without lifting the whole rig, but a new concrete pit is a bigger construction project with drainage, code, and timeline headaches. A 2 post car lift, by contrast, could be installed on existing slab in a matter of days once the pad was confirmed flat and thick enough. For a shop juggling walk-in customers and needing the bay back in service fast, that mattered more than the theoretical convenience of a pit.
The other factor was flexibility. A pit is built for one purpose. A 2 post car lift can handle pickup trucks with duallys one day, a tow vehicle the next, and still leave floor space open when it’s not in use. For a shop that services everything from half-ton trucks to fifth-wheel toterhomes, that versatility won out. We walked them through arm reach and lift height needs specific to differential service, since you want enough ground clearance to work a jack stand or transmission jack under the diff without straining, and that pointed them toward a heavier-capacity two post model rather than an entry-level unit.
Overhead vs Baseplate Configuration: What Actually Mattered
This is where the shop had to make its real call. An overhead configuration runs the structural beam across the top of the two columns, which keeps the floor completely clear but requires enough ceiling height to clear the beam plus the vehicle. A baseplate configuration ties the columns together at floor level instead, which lowers the overhead clearance needed but puts a plate across the floor between the posts that you have to plan traffic flow around.
For this Waukee shop, ceiling height in the bay was generous, so overhead was the obvious pick, and it kept the floor open for rolling tool carts and jack stands during differential work. But we’ve installed plenty of baseplate 2 post car lifts in older Iowa shop buildings where the ceiling just won’t clear an overhead beam with a raised pickup on the arms. If you’re evaluating this decision yourself, measure your actual ceiling height with the vehicle you service most in mind, not just the lift’s rated max height, because a tall dually or RV chassis eats up clearance fast.
Getting Ready for Install Day: Concrete, Pad, and Access
Before we ever showed up with a lift, we asked the same questions we ask every shop: how thick and how old is the slab, is there a pit already in that spot, and is there a forklift or means to get the crated columns off the truck. This shop’s bay had newer concrete poured to commercial spec, which made anchoring straightforward. Older Iowa shop buildings sometimes have thin or cracked slab, and we won’t anchor a 2 post car lift within 12 inches of a crack or expansion joint because of the real risk of the concrete failing under load — we can do it with a signed liability waiver, but we’d rather steer a shop toward a better spot on the pad.
Delivery logistics matter too. A two post lift ships as columns, arms, an overhead or baseplate beam, cables, and hydraulic components, and it’s heavy enough that having a forklift or at minimum a pallet jack and clear dock access saves everyone time on install day. This shop had a roll-up door and forklift access, so our crew got the whole unit set, leveled, and cabled in one day.
First Real Job: Differential Fluid Service on a Tow Vehicle
The first real test came within a week of install: a customer’s heavy-duty tow vehicle needed a differential fluid change before a long trip. The technician ran the truck up on the arms, set it at working height, and had full clearance underneath to drop the diff cover, drain old fluid, and refill without crouching or working off a creeper. That’s the whole point of a properly speced 2 post car lift for this kind of shop — it turns a cramped, awkward job into a standing-height task that takes a fraction of the time.
Over the following months, the same lift handled U-joint work, brake service on trailers with surge brakes, and general underbody inspections ahead of RV road trip season. The owner told us the versatility paid for itself faster than expected, since the lift wasn’t a one-trick piece of equipment sitting idle between big jobs — it stayed busy on routine work most days.
Symmetric vs Asymmetric Arms for Truck and RV Work
One detail that comes up constantly with two post lifts serving trucks and trailers is arm configuration. Symmetric arms center the vehicle evenly between the columns, which works fine for passenger cars but can crowd the door swing on long trucks. Asymmetric arms shift the vehicle slightly forward, opening up front door clearance and improving weight distribution for engine-heavy trucks and vans. For a shop mostly running duallys and tow vehicles, asymmetric arms usually make more sense, and that’s what we specced for this install. If you’re not sure which your existing lift has, it’s worth checking before you order replacement arm pads or extensions, since the two aren’t always interchangeable.
Maintenance and the First-Year Service Call
Like most lifts, the first year is when small issues surface. This shop’s biggest lesson was scheduling that first annual inspection rather than waiting until something felt off. We see this pattern across Iowa constantly — a two post lift running for years without a single inspection, and then a cable stretches unevenly or a hydraulic seal starts weeping and suddenly it’s an emergency instead of routine maintenance. A basic annual check on cables, anchors, hydraulic lines, and the locking mechanism keeps a 2 post car lift running the way it’s supposed to and catches wear before it becomes downtime.
We also talked with the shop about spare parts on hand — a basic cable and a couple of seal kits sized to their exact model, so if something does wear out mid-week, they’re not waiting on freight to get the bay back online. For a shop that depends on that lift daily, a few dollars in shelf-stocked parts saves real money in lost service time.
What We’d Tell Any Iowa RV or Trailer Shop Considering This Setup
If you’re running a shop that services trucks, trailers, or RVs and you’re deciding between a pit and a 2 post car lift, start with your ceiling height and your most common vehicle, then work backward into overhead versus baseplate. Don’t guess at concrete condition — have someone actually check slab thickness and look for cracks before committing to an anchor pattern. And plan for arm configuration based on the vehicles you actually service, not the vehicle you happen to have in the bay that day.
This Waukee shop’s first year proved out the basic formula: right lift, right configuration, solid concrete, and a maintenance schedule that doesn’t get ignored. A 2 post car lift isn’t complicated equipment, but getting the details right up front is what determines whether it’s a workhorse or a headache three years down the road.

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