Piedmont Forklifts: Service, Sales, Rentals — Woman Owned, Spartanburg, South Carolina
A Toyota counterbalance. Two Hysters. A Crown reach truck. A Raymond pallet jack. Some propane, one diesel, the rest electric. You think of that as six brands and four fuel types — and you’d be describing your fleet the way almost every operations manager does. Federal regulation describes it very differently, and that gap is why all makes forklift repair is harder to buy than it sounds.
OSHA Counts Eleven, Not Four
Open 29 CFR 1910.178 and go to paragraph (b). The standard sets out eleven designations of industrial truck: D, DS, DY, E, ES, EE, EX, G, GS, LP, and LPS.
These aren’t trim levels. They encode what safeguards a truck carries and where it is legally permitted to work:
- D is baseline diesel. DS adds safeguards to the exhaust, fuel, and electrical systems. DY carries every DS safeguard, has no electrical equipment at all — including no ignition — and adds temperature limitation features.
- E is baseline electric. ES adds spark and surface-temperature protection. EE fully encloses the motors and all electrical equipment. EX is built so the electrical fittings can work in atmospheres carrying flammable vapors or dusts.
- G and GS cover gasoline. LP and LPS cover propane.
So “we service electric” isn’t really a statement of capability. There are four electric designations, they are not interchangeable, and the standard permits only approved trucks in hazardous locations at all. Your propane truck may also be a converted unit — the standard allows gasoline trucks to be converted to LP fuel, but only if the finished conversion actually embodies the LP or LPS feature set and the conversion equipment is approved.
The Parts Rule Points Straight Back at the Manufacturer
Here’s where “all makes” stops being about convenience.
Paragraph (q)(5) requires that any part needing replacement be replaced only with parts “equivalent as to safety with those used in the original design.” Original design means the manufacturer’s design. Whoever repairs your Hyster has to know what Hyster specified.
Paragraph (q)(6) goes further: trucks must not be altered so the relative positions of parts differ from how they arrived from the manufacturer, nor by adding parts the manufacturer didn’t provide, nor by removing parts. Extra counterweighting is barred outright unless the truck manufacturer approves it. And paragraph (a)(4) requires the manufacturer’s prior written approval before any modification affecting capacity or safe operation — with the capacity plate updated to match.
Read those together and a pattern emerges. The regulation keeps deferring to the manufacturer. Nine brands in your yard means nine sets of specifications, nine parts catalogs, nine sets of limits.
OSHA Judges by the Manufacturer’s Limits
This isn’t a stretched reading. In a 2004 letter of interpretation, OSHA was asked to define “in need of repair,” “defective,” and “unsafe.” It declined — noting that neither the standard nor its source consensus standard defines them — and said instead that it weighs the totality of the circumstances, considering factors including the truck’s condition, “the manufacturer’s limitations on the truck,” and consensus standards such as ANSI B56.1.
The letter gave concrete examples of unsafe: a gauge not functioning properly, broken welds, missing bolts, damage to the overhead guard, tires missing large pieces of rubber. Practical stuff. But the governing yardstick is the manufacturer’s own limits — which means a technician who doesn’t know the brand can’t reliably tell you whether your truck is legal to run today.
Why This Is Hard to Buy
Brand-authorized shops know their brand deeply. That’s the whole design of the model, and it works well if you run one badge. Run six and you’re managing several vendors, several trip charges, and several response windows — and the truck that goes down first is rarely the one whose shop can come today.
The alternative is one technician current across brands, fuel types, and designations. That competence is genuinely scarce, and the labor arithmetic says it’s getting scarcer — roughly 93 percent of annual openings in the trade exist just to replace people leaving, as we cover in The Forklift Technician Shortage Is Setting Your Service Rate. Scarce skill priced by a shrinking pool is the whole story of what you pay.
What a Mixed Fleet Actually Needs
Not a specialist per badge. Someone who knows which designation each unit carries, what its manufacturer permits, and what “equivalent as to safety” means for that specific machine.
Piedmont services gas, diesel, propane, and electric lifts across Toyota, Hyster, Yale, Cat, Crown, Komatsu, Mitsubishi, Clark, and Raymond — plus pallet jacks, reach trucks, and stackers — and most of those machines were bought somewhere else. Complex repairs get reviewed by Ada and Bill Wallace personally, against 62-plus combined years in the industry.
Whether consolidating your fleet onto one vendor is right for you is a business call. But the regulation isn’t asking whether it’s convenient. It’s asking whether whoever touched the truck knew the manufacturer’s spec — and that question gets asked again every shift, which we take up in What OSHA Actually Requires Before a Forklift Moves. What it costs to run those units between repairs is its own problem, covered in The 2026 Fuel Spike Hit Your Forklifts Too.
Frequently Asked Questions
How many forklift types does OSHA actually recognize?
Eleven designations under 29 CFR 1910.178(b): D, DS, DY, E, ES, EE, EX, G, GS, LP, and LPS. They differ by fuel and by what safeguards the truck carries, which determines where it may legally operate.
Can any shop use aftermarket parts on my forklift?
Only within limits. OSHA requires replacement parts be equivalent as to safety with those used in the original design, and bars adding parts the manufacturer didn’t provide or removing parts altogether.
Do I need the manufacturer’s approval to modify a forklift?
For modifications and additions affecting capacity and safe operation, yes — 1910.178(a)(4) requires the manufacturer’s prior written approval, and the capacity, operation, and maintenance plates must be updated accordingly.
How does OSHA decide a forklift is unsafe?
By totality of circumstances. Per OSHA’s 2004 interpretation letter, factors include the truck’s condition, the manufacturer’s limitations on the truck, and consensus standards like ANSI B56.1. Examples cited include malfunctioning gauges, broken welds, missing bolts, and overhead guard damage.
Can a gasoline forklift be converted to propane?
Yes, under 1910.178(q)(12) — but the complete conversion must result in a truck embodying the features specified for LP or LPS designated trucks, and the conversion equipment must be approved.
About the Author
Ada Wallace is President of Piedmont Forklifts in Spartanburg, South Carolina, where she handles customer relations and day-to-day operations and speaks with service customers directly. She brings more than 24 years in the warehousing and manufacturing support industries, holds a B.S. from Clemson University, and has attended Gordon Conwell Theological Seminary. She works alongside Vice President Bill Wallace, who brings more than 38 years of industry experience — together, 62-plus combined years. Piedmont Forklifts is ISO 9001:2015 certified and holds WBENC (Women’s Business Enterprise National Council) and WOSB (Woman Owned Small Business) certifications. She can be reached at awallace@piedmontforklifts.com or 864.906.3263.
Piedmont Forklifts
Piedmont Forklifts runs forklift service, sales, and rentals from 1091 Barnwell Road in Spartanburg, South Carolina, covering Spartanburg, Greenville, Anderson, Cherokee, Laurens, and Union counties.
Our Services Include:
- Forklift Service and Repair — All major makes, all fuel types; $120/hour labor, $90 flat trip charge, written estimates, no upcharge fees
- Forklift Sales — Inspected pre-owned lift trucks matched to your application
Running a mixed fleet? Contact Piedmont — you’ll reach Ada or Bill directly.
Works Cited
United States, Department of Labor, Occupational Safety and Health Administration. “1910.178 — Powered Industrial Trucks.” Occupational Safety and Health Standards, 29 CFR 1910.178, www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.178. Accessed 16 July 2026.
Fairfax, Richard E. “Clarification of the Powered Industrial Truck (1910.178) Standard’s Use of the Terms ‘in Need of Repair,’ ‘Defective,’ and ‘Unsafe.'” Standard Interpretations, Occupational Safety and Health Administration, U.S. Department of Labor, 17 June 2004, www.osha.gov/laws-regs/standardinterpretations/2004-06-17. Accessed 16 July 2026.
