When a third-generation family shop just north of the Iowa border called us about mohawk automotive lifts for their exhaust and driveline bay, the first question wasn’t which model to buy — it was whether their 1974 concrete slab could even hold one. That’s the right question to ask first. We’ve installed and serviced lifts across Iowa and into southern Minnesota for years, and the shops that skip the site survey are the ones calling us six months later with a lift that rocks, a floor that’s cracking, or a bay that’s two inches too tight for a full-size pickup with dual exhaust. This family had grandpa’s original hoist still sitting in the corner as a reminder of how far the equipment has come. Getting the prep right the first time saves everyone a headache.
Tell us your bay dimensions, vehicle mix, and concrete age. We’ll help you pick the right lift and plan the install before anything ships.
Why This Shop Chose Mohawk Automotive Lifts for Driveline Work
This particular shop does a lot of exhaust and driveline work — catalytic converters, mufflers, transmission swaps, U-joints, the kind of jobs where a tech needs to stand fully upright underneath the vehicle with both hands free and good light overhead. That rules out a lot of low-rise or drive-on setups that are built more for tire and brake work. Mohawk automotive lifts, particularly the two-post configurations, give techs a completely open underside with no center obstruction, which matters a lot when you’re wrestling a heavy exhaust section or dropping a transmission crossmember.
The shop’s third-generation owner told us his grandfather ran everything off a single-post hoist that took twice as long for the same job because you were always working around the post. Modern mohawk automotive lifts solve that with symmetric or asymmetric arm configurations that clear the frame rails without blocking the tech’s access to the driveline. For a shop doing volume exhaust and U-joint work, that swing arm clearance translates directly into billable hours saved every single day, which is exactly the kind of detail that matters more to a working shop than a spec sheet.
The Site Survey: What We Actually Measure First
Before we ever talk model numbers, we’re out at the shop measuring three things: ceiling height, floor thickness, and bay width. Ceiling height matters because a two-post lift raising a full-size crew cab pickup to comfortable working height for driveline access can need close to 12 feet of clearance from floor to the top of the raised vehicle. A lot of older Minnesota farm-town shops built in the 60s and 70s have 10 to 11 foot ceilings, which changes what lift height and post configuration we recommend.
Floor thickness is the one that trips people up. Most lift manufacturers, mohawk automotive lifts included, spec a minimum of 4 inches of properly cured concrete with a compressive strength around 3,000 PSI for anchoring, and that’s for a slab with no cracks, no expansion joints running through the anchor pattern, and no rebar interference within the anchor bolt zone. We’ve walked into shops with beautiful floors that are only 3.5 inches thick over old fill dirt, and that means either a concrete pour before install or a different lift footprint. We check all of it with a tape measure, a rebar locator, and sometimes a core sample before we ever quote install labor.
Column Spacing and Bay Width for Full-Size Trucks
Southern Minnesota shops see a lot of full-size pickups, farm trucks, and the occasional dually — vehicles with wide wheelbases and long overhangs that need real column spacing to load safely. A typical two-post configuration runs somewhere between 10 and 12 feet of column spacing depending on the model, and that number has to be checked against your actual bay width, not just the open floor space. You need enough room on both sides of the columns for the tech to walk around, plus swing clearance for the arms when they’re rotated out to load a wide truck.
We’ve seen shops order a lift based on a floor plan sketch that didn’t account for a support beam or a parts shelf six inches into the bay, and suddenly the columns don’t fit where they were supposed to go. Before we finalize any order we walk the actual bay with a tape measure and mark where the columns will land relative to doors, support beams, and adjacent equipment. For a shop running driveline work on trucks with long wheelbases, that extra foot of clearance on each side isn’t a luxury — it’s what keeps a tech from banging a knuckle on a column while sliding an exhaust pipe out from underneath.
Power Requirements and Electrical Prep
Most two-post lift packages run on a 220V single-phase circuit, and that’s usually the easiest part of the prep list, but it still needs to be planned before install day, not during it. We ask every shop to confirm they’ve got a dedicated circuit run to the lift location with the right breaker size before our crew shows up, because waiting on an electrician mid-install turns a one-day job into a two-day job fast.
Some older rural shops in southern Minnesota are still running older panel configurations that were never sized for shop equipment beyond a welder and an air compressor. If a shop needs a panel upgrade, that’s a conversation we want to have during the site survey, weeks before the lift ships, not the morning our install crew arrives with a truck and a tight schedule. We coordinate directly with the shop’s electrician when needed so the circuit is live and tested before we ever unload the columns.
Freight, Forklift Access, and Delivery Day Logistics
Lift freight isn’t like a parts order — a two-post package ships on a pallet that weighs well over a thousand pounds, delivered by common carrier, and the driver isn’t going to hand-unload it for you. We always ask shops the same question up front: do you have a forklift on site, or do we need to bring one? If there’s no dock and no forklift, we plan for a liftgate delivery or we bring our own equipment, and that gets built into the install quote from the start rather than showing up as a surprise charge.
We also ask about the unloading path — is there a step up into the shop, a narrow door, a tight turn around a corner post — because a pallet that’s fine on the truck can become a real problem getting from the parking lot to the install bay. Inspecting the freight for damage the moment it arrives matters too; once a delivery bill is signed clean, disputing shipping damage later gets a lot harder. We walk every crate with the shop owner before signing anything.
Concrete Cure Time and Anchor Bolt Placement
If a shop needs new concrete poured for the lift footprint, that’s the single biggest schedule item in the whole project. Fresh concrete needs a minimum cure time, typically around 28 days for full compressive strength, before anchor bolts should be set and torqued to spec. We’ve had shops try to rush this because they’ve got a customer’s truck waiting, and we understand the pressure, but a lift anchored into undercured concrete is a safety problem waiting to happen, not a shortcut worth taking.
Anchor bolt placement also has to avoid existing cracks, control joints, and any embedded conduit or drain lines under the slab. We mark out the full anchor pattern on the floor before drilling a single hole, cross-check it against the manufacturer’s template, and confirm there’s nothing underneath that a rebar locator would catch. For a family shop that’s been on the same slab for decades, this step also flags any settling or damage that’s happened over the years that needs addressing before the lift goes in, not after.
Post-Install Walkthrough and Load Testing
Once the columns are anchored and the hydraulics are connected, we don’t just hand over the keys. We run a full walkthrough with the shop’s techs covering safety lock engagement, arm restraint positioning for the vehicle types they actually service, and load testing at rated capacity before anything real goes up on the lift. For a shop focused on exhaust and driveline access, we specifically test arm clearance and swing range with a truck loaded the way they’ll actually use it every day.
We also cover the maintenance basics on the spot — cable inspection intervals, hydraulic fluid checks, and what a worn equalizer cable actually looks like before it fails. Mohawk automotive lifts are built solid, but every lift needs routine attention, and a five-minute walkthrough on install day saves a service call down the road. We leave every shop with our direct line and encourage techs to call before a small issue turns into a lift sitting idle for a week waiting on parts.
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