If you’re a weekend mechanic in West Des Moines shopping for a forward 2 post car lift, the used listing you’re eyeing on Facebook Marketplace probably looks like a steal until you factor in what’s hiding inside those cylinders. We’ve walked into more garages than we can count where someone bought a used two-post lift for a great price, got it wired up, and then discovered the hydraulic cylinder was leaking down overnight. Before you hand over cash for any Forward-brand two-post lift, new or used, you need a real checklist — and cylinder condition belongs at the very top of it, not as an afterthought you deal with after the vehicle’s already stuck in the air.
Browse two-post lifts and cylinder seal kits we stock for Iowa garages, or call us before you buy used so we can help you check it out first.
Why the Cylinder Is the First Thing to Inspect on a Forward 2 Post Car Lift
Every forward 2 post car lift relies on hydraulic cylinders to actually raise the carriage, and those cylinders are the single most expensive component to replace if they’re shot. Unlike a screw-drive or chain issue, a bad cylinder often isn’t obvious from a quick visual check. A seller can wipe down the base, hose off the columns, and make the whole unit look freshly serviced while the cylinder seals underneath are already weeping. That’s exactly the kind of thing we see on service calls across central Iowa — a lift that looked fine in photos but had oil pooling under the piston within a week of installation at the buyer’s house.
When you’re evaluating a forward 2 post car lift in person, ask the seller to run it up and down a few times while you watch the cylinder rod. Wipe it dry with a rag, cycle the lift, then check the rag again. Any fresh oil residue means the seals are compromised, and depending on the age of the unit, that could mean a simple seal kit or a full cylinder rebuild. Either way, you want to know that cost before you negotiate a price, not after you’ve already loaded it onto a trailer.
Reading the Signs of Worn Seals Before You Buy
Weeping oil on the rod is the most obvious sign, but it’s not the only one. Ask the current owner to lower the lift under load, or at least under the weight of the carriage and arms, and listen for how smoothly it descends. A cylinder with worn internal seals often causes a jerky or uneven drop, because oil is bypassing internally instead of flowing through the release valve the way it should. You might also notice the lift creeping down slightly on its own after it’s raised and left sitting — that’s a strong indicator the piston seal isn’t holding pressure anymore.
Check underneath the base plate too. Cylinders on most two-post lifts sit low, and a slow leak often shows up as a dark stain on the concrete directly below the cylinder rather than anywhere visible on the column itself. If the seller has parked the lift over the same spot for years, that stain will tell you more than any verbal assurance about maintenance history. We always tell hobbyist buyers in the West Des Moines area: bring a flashlight and get down on the floor before you get out your checkbook.
What a Rebuild Kit Actually Costs Versus a New Cylinder
Once you know a cylinder needs attention, the next question is whether a seal kit will fix it or whether you need a full replacement cylinder. Seal kits are the more affordable route and work well when the cylinder bore itself is still smooth and free of scoring. If the rod or bore has pitting, rust, or grooves from years of debris in the hydraulic fluid, a seal kit alone won’t hold pressure for long, and you’re better off budgeting for a full cylinder swap.
For most home-garage two-post lifts, a seal kit rebuild is a manageable weekend project if you’re comfortable with basic hydraulic work, and it’s a fraction of the cost of a new cylinder assembly. We stock rebuild kits for the major two-post platforms and can walk you through disassembly over the phone if you’re the type who’d rather turn a wrench than pay a technician. That said, if you’re not confident bleeding the system afterward or you don’t have a way to safely support the carriage while the cylinder is out, it’s worth having someone local handle the swap so you’re not left with a lift stuck halfway up your garage.
Baseplate Versus Overhead: Why It Changes What You Should Buy
A lot of weekend mechanics assume all forward 2 post car lift models install the same way, but baseplate and overhead configurations have real tradeoffs that affect both ceiling height needs and long-term maintenance access. If your West Des Moines garage has a lower ceiling, a baseplate model might be your only option, and that also changes where the hydraulic lines and cylinder sit relative to the floor. Overhead units route things differently, which can make cylinder access either easier or more cramped depending on the specific model.
Before you commit, measure your garage ceiling height with the lift’s maximum rise in mind, not just its resting height. We’ve had callers get a lift home only to realize the vehicle can’t clear the ceiling at full extension, or that the overhead crossbar clips their garage door track. Matching the configuration to your space isn’t just about clearance for the car — it’s about giving yourself room to actually service the cylinder down the road without disassembling half the structure to get a wrench in there.
Anchoring and Concrete: The Part Everyone Skips
A forward 2 post car lift is only as good as the floor it’s bolted to, and this is where we see the most corners cut by DIY installers. Concrete needs to meet a minimum thickness and cure time for the anchors to hold rated capacity, and older Iowa garage slabs — especially ones poured decades ago — sometimes don’t meet that bar without additional reinforcement. Skipping this step doesn’t just risk the lift; it risks whatever vehicle is sitting on it.
If you’re buying used, ask where the lift was previously installed and whether the concrete was ever tested or the anchors ever pulled. A history of loose or re-torqued anchors can mean the original slab was marginal, which is a red flag whether you’re moving the lift into your own garage or letting it stay where it is. We recommend a core sample or at minimum a visual inspection of your slab’s age and condition before any two-post lift goes in, cylinder concerns aside.
Power Requirements Weekend Mechanics Often Overlook
Most two-post lifts, including Forward’s residential and light-commercial models, run on a 220v single-phase circuit, and that’s a detail some first-time buyers don’t think about until the unit is already sitting in their garage. If your West Des Moines home only has 110v service run to the garage, you’ll need an electrician before you ever cycle the lift for the first time, which adds cost and time to the project that’s easy to underestimate.
We also get calls from customers wanting to relocate the power unit itself — moving the pump to the top of the lift or running a separate remote switch further away from the columns. That’s sometimes done for convenience, and sometimes for safety reasons, like keeping technicians with medical devices a safe distance from the electrical unit. Either way, know your electrical setup and any special accommodations you might need before the lift arrives, not during installation weekend.
When to Call In a Professional Instead of DIYing the Rebuild
We’re all for weekend mechanics doing their own work — that’s half the reason to own a lift in the first place. But there’s a point where a cylinder rebuild on a forward 2 post car lift stops being a rewarding project and starts being a liability. If you find scoring inside the cylinder bore, corrosion on the rod, or you’re not fully confident in your ability to bleed air out of the hydraulic system afterward, that’s the point to make a call.
A lift that isn’t rebuilt correctly won’t fail gracefully — it can drop unevenly or lose holding pressure with a vehicle on it, and that’s not a risk worth taking to save a service call. We service and rebuild two-post lifts across Iowa and can usually tell you over the phone, based on symptoms, whether it’s a straightforward seal kit job or something that needs a trained hand. Either way, get an honest assessment before you’re mid-teardown in your garage on a Saturday with parts scattered across the floor.
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