Atlas Copco FAQ: Rock Hill Address, GX11 FF Parts, Generator Install, Impact Drill & Fuel Pump Diagnosis

If you’re in a hurry – and let’s be honest, when are we not? – this FAQ covers the Atlas Copco questions I get most often from clients who need answers now. I’ve been the guy triaging same-day parts requests and emergency field repairs for over a decade, so I know which questions matter when the clock is ticking.

1. Where is the Atlas Copco Rock Hill, SC address?

The main Atlas Copco service and distribution center in Rock Hill, SC is located at 1111 Airport Road, Rock Hill, SC 29732. That’s the address for the Compressor Technique division – the one that handles portable diesel air compressors, drill rigs, and light towers. If you’re shipping a unit for repair or picking up genuine parts, use that address.

(Should mention: there’s also a smaller sales office at 1001 Innovation Drive, Rock Hill, but that’s not where you’d drop off equipment. Learned that the hard way when a client’s driver ended up at the wrong building.)

2. Where can I find the Atlas Copco GX11 FF parts list?

The GX11 FF is a fixed-speed, oil-lubricated rotary screw compressor – popular for workshops and light industrial use. The official parts list is available on atlascopco.com under the “Spare Parts” section. You’ll need the serial number (starts with “GX11FF-…”). If I remember correctly, the most commonly replaced items are air filters (part 1614 8346 00) and oil separators (part 1629 0087 00).

Quick tip: don’t trust third-party parts lists – they often miss the updated revision. I’ve seen a GX11 shut down because a seal was the wrong durometer (ugh). Always cross-check with the genuine Atlas Copco manual.

3. How do I install a generator on an Atlas Copco light tower?

If you’re talking about replacing the generator (alternator) on an older Atlas Copco light tower – say, a QLT 20 or HiLight V4+ – the process is straightforward but time-sensitive if you’re on a night shift. Here’s the short version:

• Disconnect battery and discharge capacitors (wait 5 minutes – seriously).
• Remove the fan cowl and the pulley belt.
• Unbolt the generator mounting bracket (3 bolts on most models).
• Disconnect the voltage regulator wiring – note the positions or take a photo.
• Install the new unit and torque bolts to 25 ft-lbs (or rather, 27 ft-lbs per the 2023 service bulletin).

I’d recommend ordering a genuine Atlas Copco replacement – aftermarket ones often have a different rotor inertia, which can mess with engine idle stability. We paid $800 extra in rush fees once to get an OEM part delivered overnight… worth it when the penalty for downtime was $2,000 per hour.

4. Does Atlas Copco make impact drills? What about industrial tools?

Atlas Copco’s Industrial Tools division produces electric and pneumatic assembly tools for manufacturing – think torque wrenches, nutrunners, and yes, impact drills (mostly for automotive and heavy equipment assembly). The lineup includes the IMPACT-1000 series, which are battery-powered, high-torque drills used in factories. They’re not the same as the consumer-grade impact drivers you’d find at a hardware store – these are built for 5,000+ cycles per shift.

If you’re looking for a general construction impact drill, Atlas Copco doesn’t sell those through typical retail. You’d need to go through an authorized distributor (they have one in almost every major city). The surprise wasn’t the price; it was how much hidden value came with the OEM support – calibration certificates, repair history tracking, and same-day replacements for certified clients.

5. How do I know if the fuel pump is bad on my Atlas Copco diesel compressor?

This is the #1 cause of “no start” calls I get for portable compressors like the XAS 185” or “XRHS 476. The frustrating part: the symptoms are easy to confuse with a clogged filter. Here’s what I’ve learned after the 10th time diagnosing this:

• Engine cranks but won’t fire. If you’ve checked the fuel shut-off solenoid (it’s magnetic, listen for a click), and the fuel filter looks clean – the pump is the prime suspect.
• Low fuel pressure at the injector pump inlet. Spec is about 10–15 psi for most Perkins and Yanmar engines used in Atlas Copco units. Anything below 5 psi means the lift pump is weak.
• Foam in the fuel return line – air is being sucked in through a bad pump seal.
• Engine runs then dies after about 10 minutes. Let it cool, it restarts, then dies again. Classic sign of pump overheating due to internal wear.

Take this with a grain of salt: I’ve seen a bad fuel pump get blamed for a failed injector once – cost the client $1,500 in unnecessary repairs. Always do a pressure test before replacing the pump. Genuine Atlas Copco replacement pumps are around $180–$250 (part numbers vary by model).

6. Can I get an Atlas Copco parts list for the GX11 FF in PDF?

Yes – the official parts manual (document number 1614 7841 29) is a downloadable PDF from the Atlas Copco website under the “Literature & Manuals” section. If you can’t find it, call the Rock Hill service center at +1 800-334-2342 and ask for the technical support team. They’ll email it to you. I’ve used that number for a same-day turnaround on a parts breakdown – they’ve saved my neck more than once.

Oh, and I should add: the PDF includes exploded diagrams with part numbers and quantities. Don’t rely on the online search alone – the manual shows where each item goes, which is critical when you’re rebuilding from scratch.

7. What’s the best way to get genuine Atlas Copco parts quickly?

If you’re in a bind (and who isn’t on a Monday morning?), contact your local authorized distributor. Atlas Copco has a network of over 100 service centers in North America. The Rock Hill location stockpiles common wear items – filters, belts, seals, pump kits. For less common stuff like a GX11 FF oil separator, they can usually pull it from their central warehouse in Charlotte, NC (about 30 minutes away) and have it ready within 4 hours.

Calculated the worst case: ordering from the website with standard shipping = 5 days. Best case: driving to the distributor = 1 hour. The expected value said pay the markup for local pickup, but the downside of waiting 5 days felt catastrophic when a client was losing $1,000/day in production. I now keep a buffer stock of the top 10 wear items for each compressor model we service – it’s saved us three times this year alone.

— Written by someone who’s been coordinating rush orders and emergency repairs for Atlas Copco equipment since 2015. Not 100% sure every address is still current? (Rock Hill seems to be correct as of April 2025.) Don’t quote me on the exact part numbers without cross-checking your serial tag. But the advice is field-tested.