Oil pan gasket work is one of the least glamorous jobs in a fleet bay and one of the most dangerous when a lift is misused. A municipal fleet manager in Sioux City called us after a close call — nothing was hurt, but a shifting truck almost swung an arm loose during a long overhead job — and asked us to walk his entire team through the safety-first way to use a 2 post car lift for oil pan gasket removal. This article is that walkthrough, cleaned up and written down so any shop can borrow it. Auto Lift Services is the Iowa distributor that trained his team, and safety on a two-post is not optional, it is the whole job.
Every commercial two-post we ship carries current ALI Gold certification and comes with a hands-on safety training walkthrough for your crew.
Why an oil pan job is a high-risk two-post scenario
An oil pan gasket replacement puts the vehicle in the air for hours. The crossmember has to come down, the pan has to be lowered, the mating surfaces have to be cleaned and scraped, the new gasket seated, the pan reinstalled, and the fluid replaced. On some trucks the engine has to be lifted slightly to clear the pan on removal, which shifts weight around while the vehicle is up in the air. That is exactly the wrong condition for a lift that is not properly rated, not properly locked, or not properly loaded on the arms. Every fleet operator running oil pan work on a 2 post car lift needs to build the safety habits before the truck goes up.
The Sioux City fleet manager’s close call happened when a tech was working under a truck that was resting on the arms without the safety cams engaged. The truck shifted when the pan came down, one arm rotated slightly toward the center, and the tech felt the swing. Nobody was hurt, but the incident report went to city risk management and it triggered his call to us. We came out the same week, trained his crew, and inspected every arm restraint and safety cam on the shop’s five two-posts. A 2 post car lift can be operated safely every day for decades — but only with discipline.
Arm restraint verification before every raise
The arm restraint is the mechanism that keeps the swing arm from rotating out from under the vehicle when it is loaded. On a Rotary or Challenger commercial two-post, that mechanism is a gear-tooth or spring-pin lockout that engages the swing pin when the arm is loaded. The tech’s job is to verify engagement every single raise, not just the first raise of the day. The visual and audible cue is a positive click as the arm loads, and a ratchet sound if you try to swing it under load. No click, no lift. That is the rule.
We taught the Sioux City crew to do a formal tick-check on every arm before every raise. Grab the arm, try to rotate it, listen for the ratchet, confirm the tooth engagement. It adds 30 seconds to the workflow and it is the single most important safety habit on a 2 post car lift. In the year since we ran the training, they have not had another arm-shift incident. If your arm restraint is worn — meaning it does not click positively or a tooth is broken — we stock the arm restraint rebuild kit for every brand we sell. Do not run a shop with a compromised restraint.
Safety-cam engagement before anyone crawls under
The safety cams are the mechanical positive-locks that catch every few inches as the lift rises. They exist for exactly the oil pan scenario: hours of overhead work with the tech’s body under the truck. The operator raises the lift to working height, lowers onto the safety cams so the cams take the load off the hydraulic cylinders, and then and only then does anyone crawl under. If the hydraulic system ever fails while the cams are engaged, the truck stays where it is. If the cams are not engaged, hydraulic failure means the truck comes down.
Every 2 post car lift we sell has this cam-lowering step in first-day training. We drill it hard. The Sioux City incident happened because the tech had raised the lift and gone straight to the pan without lowering onto the cams — the truck was resting on the hydraulic pressure alone. That is the failure mode we train against. Every time. Cams engaged before you go under, always. If the cams do not click audibly on the way up, the mechanism needs service and the lift is not safe until it is fixed.
Pad placement on the frame lift zone
An oil pan job puts the technician under the engine, which means the vehicle’s weight distribution matters. On a two-post, the pads should sit on the manufacturer-specified frame lift points, not on random crossmembers or floor pan sections. Getting the pad placement right ensures the vehicle sits stable through the whole job, even when the engine is being jacked slightly to clear the pan. Wrong pad placement is a recipe for a shift under load, and a shift under load is exactly what caused the near-miss in Sioux City.
We taught the crew to consult the manufacturer’s service manual for each vehicle’s lift points before the first raise, and to use the adapter pads that came with the lift for any pickup that needs the extra height. Every 2 post car lift we ship comes with a set of drop-in pad adapters for common vehicle configurations. If the shop is missing pads, we stock them. Never improvise the pad — a stack of scrap steel is not a pad, and it is a liability if the vehicle ever shifts. Use the manufacturer’s hardware, every time.
Engine support when the pan comes down
On many oil pan gasket jobs, the engine needs to lift slightly on its mounts to clear the pan for removal. That means an engine support tool — a bar across the strut towers or a chain hoist from an overhead beam — has to hold the engine while the pan comes off. The support has to be independent of the lift itself, because the lift is already carrying the vehicle. Never use the lift to hold the engine directly; that mixes two separate load paths and creates unpredictable behavior if either one shifts.
For the Sioux City crew, we spec’d a proper engine support bar and made sure every truck they service has documented lift points and support-bar geometry. This is not glamorous work, but it is the operational discipline that keeps a fleet bay incident-free. On a 2 post car lift, the vehicle is the load; the engine, once supported for pan removal, is a separate load; and both need independent, properly-rated support during the job. Mixing the two is where things go wrong.
Cable and cylinder inspection on a high-cycle bay
The Sioux City fleet runs seven days a week, three shifts, and their two-posts see 20 to 30 lift cycles a day. That is a high-cycle bay, which means the equalizer cables and hydraulic cylinders wear faster than in a light-duty shop. We put them on a 30-day inspection schedule for cables (looking for broken strand, corrosion, kinks) and a 90-day inspection for cylinder fluid and seal condition. That is more frequent than the manufacturer’s minimum, and it is appropriate for their duty cycle.
When a cable does start to fray, we replace it immediately. We stock cables for every 2 post car lift we sell, keyed by model and serial, and can ship same-day to Sioux City. A worn cable that goes another month is a cable that might break, and a broken equalizer is the mechanical fault that leads to uneven arm loading and dropped vehicles. Do not defer cable service. The whole safety promise of a two-post rests on the equalizer working, and the equalizer only works if the cables are sound.
Training discipline and how to build a safe fleet shop
The Sioux City manager’s real question was not just about the equipment — it was about how to build a shop culture where the incident never happens again. Our answer was that the equipment is only half the safety story; the other half is training discipline. Every tech, every day, doing the same pre-lift check. Arm restraints verified, safety cams engaged before crawling under, pads on manufacturer lift points, engine independently supported when a pan comes down. Post the checklist on the wall next to the lift. Review it in monthly safety meetings.
That is what we install alongside the hardware when we ship a 2 post car lift to any fleet bay. Read our companion pieces on two-post lift safety checklist and fleet shop safety training, then browse the current lineup at our store. If you are in Sioux City, Le Mars, Sergeant Bluff, or anywhere else in northwest Iowa and you want a full safety walkthrough for your crew, call 800-674-9302 or email [email protected].
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