Hey everyone,
If you’re in the market for a used tractor—whether it’s for farm work, construction hauling, or long-haul runs—one of the most underrated checks to nail down is steering wheel play. I’ve been a used tractor supplier for over 12 years, and I can’t tell you how many times I’ve walked a potential buyer through a rig that looked great on the outside, but had so much slop in the steering wheel they could barely keep it straight on a backroad. Steering play isn’t just a minor annoyance; it’s a safety hazard, and it’s also a red flag that could mean pricey repairs down the line. Today, I’m breaking down how to check it yourself, what the numbers actually mean, and why it matters for the used tractors I have on my lot—including options like the Used HOWO 4x4, Used HOWO 6x6, Used Auman EST510, Used Dongfeng Flagship 520, and Used Shandeka 460.
First, let’s get on the same page: steering wheel play is the amount you can turn the wheel left or right before the front tires even start to move. Think of it like a video game controller’s joystick dead zone—except this is what keeps your tractor from veering into a ditch or swerving unexpectedly. For new tractors, most manufacturers cap play at around 10 degrees max. But used tractors? It depends on the age, how they were driven, and if any part of the steering system is worn out. I’ve seen some used rigs with play that’s over 30 degrees—and that’s a big no. If your tractor has more than 15 degrees of play, it’s time to dig into what’s causing it, not just brush it off.
Now, let’s get to the actual check. You don’t need fancy tools here—just a helper, a tape measure (or a ruler if you don’t have a tape), and a way to count degrees. Wait, but how do you measure degrees without a fancy tool? Easy enough: grab a piece of masking tape, stick one strip on the top of your steering wheel (so it’s straight up, like 12 o’clock), and another strip on the dashboard right next to that tape. That’s your baseline. Now, have your assistant stand in front of the tractor and watch the front tires. You’re going to turn the steering wheel super slowly to the left, and stop the second the front tire starts to move. Don’t force it—take your time. Once the tire moves, have your helper call out, and you mark the new position of your steering wheel tape with a second piece. Then do the same to the right.
Next, measure the distance between your original 12 o’clock tape and each new mark. Let’s say it’s 2 inches on the left and 2 inches on the right. Now, calculate the degrees: for a typical 18-inch diameter steering wheel (most used tractors have wheels that size or close), 1 inch of turn is roughly 3.2 degrees. So 2 inches = ~6.4 degrees left and ~6.4 degrees right. Total play? That’s around 12.8 degrees—right on the edge of what’s acceptable for a used tractor. If you get 5 inches total (2.5 inches left, 2.5 inches right), that’s 2.5 x 3.2 = 8 degrees each way, total 16 degrees? Wait no, wait—wait, total play is the sum of left and right turn before movement. Wait, let’s correct that. If your baseline is straight, you turn left until tire moves: let’s say that’s L degrees left. Then turn right until tire moves: R degrees right. Total play is L + R. That makes sense. So if you turn 5 degrees left before tire moves, and 5 degrees right, total play is 10 degrees—perfect. If it’s 10 each, total play 20 degrees? That’s too much. That’s when you need to inspect parts.
Now, why does play happen? It’s usually three main culprits, and I’ve seen all of them on the tractors I sell. First, worn steering linkage—like the tie rod ends, drag link, or idler arm. Those are the parts that connect the steering box to the front wheels, and they take a beating every time you hit a pothole, haul a heavy load over rough ground, or just turn too sharp too fast. Second, a worn steering gearbox (also called a steering box). That’s the core part that converts your wheel’s turn into the front wheels’ movement. If the gears inside are chipped, or the bearings are shot, that adds play. Third, low power steering fluid (if your tractor has power steering) or a loose belt—wait, that’s a simpler one, but easy to miss. I once had a customer test a Used HOWO 4x4, thought it had too much play, and we found the power steering belt was slipping. Tightened it, and the play was gone. Duh.
But how do you tell which one it is? Let’s walk through step-by-step troubleshooting. First, check the easy stuff: power steering fluid level. Pop the hood, find the reservoir (it’s usually labeled “Power Steering”), wipe the dipstick, stick it back in, pull it out again. If it’s below the “Full” line, top it up with the right fluid (check your manual—most used tractors use ATF, but don’t guess). If that’s low, and the play goes away after driving it for a few minutes, that was your issue. Next, check for loose or worn linkage. Grab the drag link (that’s the big bar running from the steering box to one of the front tires) and wiggle it. If there’s more than a little give, the tie rod ends or ball joints are worn. For tie rod ends: they’re the small, ball-shaped connections on the ends of the drag link. Pry them a little with a pry bar—if there’s any play, they need replacing. I’ve seen tie rod ends on a Used Dongfeng Flagship 520 wear out in just 20,000 miles because the previous owner drove it over farm roads with rocks every day.
If the linkage checks out, then it’s probably the steering gearbox. How do you confirm that? Wiggle the steering wheel yourself, not touching anything else. If you feel the play right at the wheel, not through the linkage, that’s the gearbox. Most steering gearboxes have an adjustment screw on the side—you can tighten it a little to take up play, but be careful: over-tightening will make the steering too stiff, which is a whole other problem. If you’re not comfortable doing that, take it to a mechanic, especially if the total play is over 15 degrees.
Now, let’s talk about why this matters for the specific tractors I have. The Used HOWO 4x4 is a compact workhorse, great for light to medium hauling on farms or job sites. It has a smaller steering gearbox, so worn parts will show up faster than on bigger rigs like the Used HOWO 6x6. The Used HOWO 6x6 is built for heavy loads—think construction material or long-haul hauls—so it’s often under more stress, so checking steering play there is non-negotiable. The Used Auman EST510 is a long-haul tractor, so you need steering that’s reliable for highway runs—any extra play there will make for tiring drives. The Used Shandeka 460 is popular for farm work and livestock hauling, where you’re turning on dirt roads all day, so linkage wear is common there.
Wait, but what if you’re not a mechanic? Should you skip this check? No, even if you’re not good with tools, this is a simple test anyone can do. Bring a friend, take 10 minutes, and make sure the play is under 15 degrees. If it’s more, ask me (and I’m here for any used tractor) about what repairs were done, or adjust your budget accordingly—because replacing tie rod ends is usually $200-$500, while a steering gearbox replacement is $1,500+, so that’s a big difference.
I’ve had customers come in before, test a tractor, and skip the steering play check, then a month later call me upset because they had to fix it. Don’t be that guy. This small check saves you from headaches, expensive bills, and even accidents. Steering is the most important safety system on your tractor, right? No brakes without steering, no going where you need to go.
Another thing: when you test drive the tractor, pay attention to how it feels on the road. If you’re going straight and you have to constantly adjust the wheel to stay in your lane, that’s play in the steering. If the wheel feels “loose” when you turn it, like it doesn’t immediately respond, that’s play. Those are telltale signs even before you do the tape test.
Let me wrap this up. Checking steering wheel play on a used tractor isn’t rocket science, but it’s crucial. It’s the difference between getting a rig that works for years and one that’s a money pit. For the tractors I have—like the Used HOWO 4x4, Used HOWO 6x6, Used Auman EST510, Used Dongfeng Flagship 520, and Used Shandeka 460—I always note steering play in the description, because I stand behind the equipment I sell. If you’re looking for a used tractor and want to nail down steering play, or just have questions about any of my inventory, feel free to reach out to me to talk through the details.
References
- National Highway Traffic Safety Administration. (2021). Commercial Vehicle Steering System Inspection Guidelines. Retrieved from nhtsa.gov/commercial-vehicles
- Heavy Duty Truck Industry Council. (2022). Used Tractor Maintenance Checklist: Steering Systems. Retrieved from hdtc.org/maintenance
- HOWO Official Technical Manual. (2020). Steering System Diagnostics for Used Vehicles. Retrieved from howo.com/technical-manual
- Auman EST Series Operator Handbook. (2021). Steering Play Adjustment and Inspection. Retrieved from auman.com/operator-handbook
- North American Agricultural Equipment Dealers Association. (2023). Safety Checks for Farm Tractors: Steering Systems. Retrieved from naaeda.org/farm-equipment-safety
