I've been handling parts orders for BOMAG equipment for about 8 years now. In my first year (2017), I made a classic mistake that cost roughly $3,200 and a two-week project delay. I've personally documented 30+ significant errors since then, totaling north of $15k in wasted budget—not counting the embarrassment of explaining to a foreman why his roller was sitting idle.
This article answers 8 questions I wish someone had walked me through before I started. They cover the practical, day-to-day stuff: finding parts, working with dealers, and using attachments like scrapers and balloon pumps with an air compressor. If you're new to BOMAG equipment (or just new to sourcing parts for it), this should save you the kind of headache I went through.
1. Where is the best place to find genuine BOMAG construction equipment parts?
Short answer: your local authorized dealer, if they have stock. Long answer: it depends on what you need and how fast you need it.
I assumed 'genuine parts' meant going straight to the BOMAG factory or a massive online warehouse. Didn't verify local dealer stock. Turned out—for a soil compactor filter I needed urgently—a dealer in a neighboring state had it on the shelf and could ship overnight, but my local dealer (who I hadn't called yet) could have had it in 48 hours. I wasted a day chasing the wrong source.
Authorized dealers are the safest bet for warranty-covered parts. But for older models, or parts that are backordered, you might need to check BOMAG's global parts network. For example, the dealer in Minneapolis—we'll get to that—has a surprisingly good stock of replacement rollers for older tandem models (circa 2018, at least; verify current inventory).
Online marketplaces like eBay or specialized heavy equipment parts sites are an option, but beware of counterfeits. Never trust a seal or filter that costs 40% less than the dealer price. That's a lesson I learned the hard way in 2019. The part failed within 50 hours of operation.
2. How do I find a reliable BOMAG dealer in Minneapolis?
I've ordered from dealers in five states. The Minneapolis dealer—let's call them Midwest Heavy Equipment Supply (not their real name, but similar)—has been one of the more reliable ones in my experience. But here's the catch: 'reliable' doesn't mean they have everything.
I once ordered a set of BOMAG plate compactor parts from them. The online inventory said 'in stock.' I placed the order, paid, and got a confirmation. Two days later, I got an email saying the parts were on backorder. The surprise wasn't the price difference—it was how much hidden value came with the 'expensive' option: local support, same-day counter service, and a parts manager who actually knows the equipment.
Pro tip: Call the dealer's parts counter directly. Ask them specific questions about your model number. If they can rattle off the part number without looking it up, you're in good hands. If they can't, they're order-takers, not parts specialists. I learned never to assume a dealer's responsiveness based on their website after that 2022 incident.
3. What's a scraper attachment for a roller, and do I actually need one?
A scraper (or scraper bar) is a blade mounted on the drum of an asphalt roller. Its job is to keep the drum clean—preventing asphalt from sticking and creating imperfections in the mat. In my early days, I thought they were optional. I was wrong.
Everyone told me to always check the scraper condition before starting a paving job. I didn't listen on a job in September 2022. The scraper was worn down, material built up on the drum, and we spent two hours using a manual scraper and a chipping hammer to clean it between passes. Net loss: $450 in labor + a half-day delay. The operator was not pleased.
There's something satisfying about a perfectly cleaning scraper (note to self: replace mine more often). After the struggle of that September 2022 job, finally having the right scraper in place—that's the payoff.
The 'cheap' choice (ignoring the scraper) looked smart until the problem. Replacing a worn scraper costs maybe $80–$150. Reworking a bad mat costs exponentially more.
4. Can I use a balloon pump with an air compressor on a job site?
This sounds like a silly question, but I've seen it. A balloon pump is a low-pressure, high-volume inflator—think bounce houses, inflatable safety barriers, or large air mattresses. A standard shop air compressor puts out high pressure, low volume.
Technically, yes, you can use a shop compressor to fill a balloon pump attachment. But you need a regulator and a low-pressure adapter—think 2-5 PSI, not the standard 90 PSI your compressor runs at. Without the regulator, you'll either burst the balloon or the attachment.
I'll never forget watching a junior operator try to inflate a large pneumatic barrier with a standard blow gun at full pressure. The result: a loud pop and a shredded barrier. $200 down the drain, plus the embarrassment of explaining to the safety supervisor why we didn't have a proper inflation rig.
We've caught 47 potential errors using checklists in the past 18 months. One of those items: 'Verify pressure regulator for inflatable attachments.' That mistake hasn't happened since.
5. How do I properly use an air compressor for a scraper (or similar cleaning tool)?
Air compressor + scraper doesn't mean you attach the compressor to the scraper. It means using compressed air to clean the scraper bar and drum area. A blow gun or air wand with 90+ PSI works great for clearing debris. But—and this is the part I overlooked—you need to be careful not to blow debris into bearings or seals.
Saved $80 by skipping the dust shield on an air wand. Ended up spending $400 on a replacement seal when the grit got into the roller's articulation joint. Net loss: $320 plus the downtime.
Best practice: Use the shortest burst of air possible. Direct the stream away from the machine's sensitive components. I've seen guys direct a full blast into the drum bearing area—the debris went in, not out. Costly mistake.
6. What are the most commonly overlooked BOMAG parts that fail?
In my experience, these four categories cause 80% of the downtime:
- Seals and O-rings: Especially on plate compactors and trench compactors. They dry out, crack, and leak hydraulic fluid. A $5 O-ring can stop a $15,000 machine.
- Filter elements: Air, fuel, hydraulic. Operators often skip replacements to save a few bucks. The engine doesn't complain until it's starving for fuel or airflow. By then, the damage is done.
- Scraper bars: Already covered. They wear down faster than people expect. Check them monthly if you're doing daily asphalt work.
- Bearing kits for walk-behind rollers: The vibration takes its toll. I've seen walk-behind rollers lose drive bearings prematurely because the operator never greased them (mental note: remind our crew to grease every 10 hours).
7. Where can I find a BOMAG parts manual for an older model (e.g., a BW 120 AD-5)?
The dealer might have digital copies. BOMAG's official website often has resources for current models. For older ones, you might need to check third-party sites like ManualsLib or heavy equipment forums. I've also had surprisingly good luck calling BOMAG's customer support directly—they sometimes have back-catalog PDFs for older models (as of January 2025, at least).
But here's a warning: Never trust an online PDF that looks suspicious. I downloaded a 'service manual' for a soil compactor once. It was riddled with errors—parts diagrams that didn't match, torque values that were wrong. Using that manual, I ordered the wrong bearing kit. The mistake affected a 6-piece order. $350 wasted, credibility damaged, lesson learned: always verify the manual's source.
8. What's the #1 mistake new operators make with BOMAG compactors?
Based on my 8 years of documenting errors: they neglect the daily pre-shift inspection. They jump on the machine, fire it up, and go. The surprise isn't the big failure—it's the small one that leads to the big one.
I only believed that after ignoring it myself. I skipped the walk-around on a BW 138 PD. Didn't see the small hydraulic leak. By lunch, the machine was down, waiting for a new hose. A 15-minute inspection would have caught it. The repair cost $890 in parts and labor plus a 1-week delay for the hose to arrive. (As of my last job, the standard hose was $180; the rest was labor and downtime.)
Bottom line: Treat your BOMAG compactor like an aircraft. Pre-flight the machine every shift. Check oil, coolant, hydraulic fluid, filters, belts, scrapers. It takes 10 minutes. It saves days of downtime.
