OSHA 29 CFR 1910.177(c) prohibits any employee from servicing a rim wheel until they have been trained in the correct procedures for that specific wheel type, and requires the employer to evaluate each technician’s ability to perform eight named tasks. The standard applies to rim wheels on large vehicles — trucks, tractors, trailers, buses, and off-road machines — and expressly excludes automobile wheels and pickup or van wheels using automobile tires or “LT”-designated truck tires.
A tire technician working on a 22.5-inch truck wheel with no documented task evaluation is a citable condition, regardless of how many years they have been doing the job.
What Does 1910.177 Actually Cover?
Scope first, because getting it wrong in either direction wastes money. Under 29 CFR 1910.177(a), the standard reaches the servicing of multi-piece and single-piece rim wheels on large vehicles. It does not reach automobile rim wheels, nor pickup truck and van wheels running automobile tires or truck tires designated “LT.” It also does not apply to employers regulated under the Longshoring standards at Part 1918, the Construction standards at Part 1926, or the Agriculture standards at Part 1928.
So a general-service shop doing passenger cars and light trucks in one bay and Class 8 truck tires in another is covered for the second bay only — but the covered activity is broad. “Service” means mounting and demounting rim wheels plus related activities including inflating, deflating, installing, removing, and handling. A technician who only breaks down tires and never inflates them is still servicing rim wheels.
Two definitions drive the whole standard. A multi-piece wheel is a vehicle wheel of two or more parts, one of which is a side or locking ring that holds the tire on the wheel by interlocking components when the tire is inflated. A single-piece wheel is one part designed to hold the tire when inflated. The failure modes differ — multi-piece wheels can separate explosively, single-piece wheels release contained air suddenly — and the standard writes separate safe operating procedures for each, at paragraph (f) for multi-piece and paragraph (g) for single-piece.
The third definition worth memorizing is trajectory: any potential path a rim wheel component may travel during an explosive separation or sudden air release, or an area where an airblast may be released. The standard notes that trajectory “may deviate from paths which are perpendicular to the assembled position of the rim wheel,” and Appendix A illustrates examples. Every technician who thinks standing to the side is safe needs to read that sentence.
What Are the Eight Required Task Demonstrations?
This is the part of 1910.177 that most shops fail on paper even when their practice is sound. Paragraph (c)(2) requires the employer to assure that each employee demonstrates and maintains the ability to service rim wheels safely, including performance of eight specific tasks:
- Demounting of tires, including deflation
- Inspection and identification of the rim wheel components
- Mounting of tires, including inflation with a restraining device or other required safeguard
- Use of the restraining device or barrier and other required equipment
- Handling of rim wheels
- Inflation of the tire when a single-piece rim wheel is mounted on a vehicle
- An understanding of the necessity of standing outside the trajectory both during inflation and during inspection of the rim wheel following inflation
- Installation and removal of rim wheels
Paragraph (c)(3) then requires the employer to evaluate each employee’s ability to perform these tasks and to service rim wheels safely, and to provide additional training as necessary so each employee maintains proficiency. Note what the standard does and does not say. There is no fixed refresher interval — no annual, no triennial. The trigger is proficiency, which means the employer needs a defensible basis for concluding a given technician is still proficient. In practice that means a dated evaluation record per technician per wheel type, and a re-evaluation when something changes. Contrast this with the powered industrial truck standard, which does prescribe a three-year evaluation cycle; Coggno’s guide to annual compliance training requirements for forklift operators under 1910.178 covers that model, and the difference is instructive — 1910.177 gives you more latitude and therefore more responsibility to justify your interval.
Paragraph (c)(1)(ii) specifies the training content: at a minimum, the applicable data in the charts or rim manuals plus the contents of the standard itself. And paragraph (c)(1)(iii) adds a literacy provision that OSHA takes seriously — where an employer knows or has reason to believe an employee cannot read and understand the charts or rim manual, the employer must assure the employee is instructed on their contents in a manner the employee can understand. For shops with Spanish-speaking crews, that is not a courtesy translation, it is a compliance requirement.
What Equipment Does the Standard Require?
Paragraph (d) sets equipment obligations that carry their own inspection and recordkeeping consequences.
A restraining device is mandatory for inflating tires on multi-piece wheels. For single-piece wheels, the employer must provide a restraining device or barrier unless the rim wheel will be bolted onto a vehicle during inflation. Every restraining device or barrier must have the capacity to withstand the maximum force transferred during a rim wheel separation at 150 percent of the maximum tire specification pressure for the wheel type being serviced, and must prevent components from being thrown outside or beyond it.
The inspection rule is a daily one and it is specific. Restraining devices and barriers must be visually inspected before each day’s use and after any separation of rim wheel components or sudden release of contained air. Any device showing cracks at welds, cracked or broken components, bent or sprung components from mishandling, abuse, tire explosion or rim wheel separation, pitting from corrosion, or other structural damage that would decrease effectiveness must be immediately removed from service. It cannot go back until repaired and reinspected — and if the repair is structural, meaning component replacement or rewelding, it cannot return until certified by either the manufacturer or a Registered Professional Engineer as meeting the 150-percent strength requirement.
Think about what that means operationally. A shop with one cage that develops a weld crack on a Tuesday cannot inflate multi-piece wheels until a PE signs off. Shops that have never built that into their downtime planning discover the rule at the worst moment. The stored-energy physics behind it is the same principle covered in Pressure Vessel Safety, and the airblast and line-of-fire hazards are addressed in Compressed Air Safety Awareness and Focus Four: Struck-By Awareness.
The standard also mandates a specific air line assembly under (d)(4): a clip-on chuck, an in-line valve with a pressure gauge or a presettable regulator, and enough hose between the chuck and the in-line valve to let the employee stand outside the trajectory. A shop using a hand-held inflation gauge on a truck tire is out of compliance by equipment, not just by practice. Current charts or rim manuals for the wheel types serviced must be available in the service area, and only tools recommended in the rim manual for that wheel type may be used.
What Are the Safe Operating Procedure Rules?
Paragraphs (f) and (g) require the employer to establish written safe operating procedures and to assure employees are instructed in and follow them. Several elements catch shops out.
For multi-piece rim wheels: tires must be fully deflated by removing the valve core before demounting, and also before removing a rim wheel from the axle if the tire has been driven at 80 percent or less of recommended pressure or if there is obvious or suspected damage. If a tire on a vehicle is underinflated but above 80 percent, it may be inflated on the vehicle only with remote-control inflation equipment and no employee in the trajectory. Employees may not rest or lean any body part or equipment on or against a restraining device while a rim wheel is inside it. After inflation, the assembly must be inspected while still in the device, and any adjustment requires deflating by valve core removal first. Seating of side and lock rings may never be corrected by hammering, striking, or forcing while pressurized. Damaged components may not be reworked, welded, brazed, or heated — and no heat may be applied to a multi-piece wheel or component at all.
For single-piece rim wheels: mounting and demounting only from the narrow ledge side; nonflammable rubber lubricant on bead and wheel mating surfaces unless the manufacturer advises against it; on a tire changing machine, inflation only to the minimum pressure needed to force the bead onto the rim ledge; a bead expander removed before the valve core is installed and as soon as the assembly becomes airtight. Inflation is permitted only inside a restraining device, behind a barrier, or bolted on the vehicle with lug nuts fully tightened. And a rule that surprises people: tires may not be inflated when any flat, solid surface is in the trajectory and within one foot of the sidewall.
Component acceptability under paragraph (e) adds the inspection discipline. Multi-piece components may not be interchanged except as the charts or rim manual allow. Components must be inspected before assembly, and anything bent out of shape, pitted from corrosion, broken, or cracked must be marked or tagged unserviceable and removed from the service area. Rim flanges, gutters, rings, bead seating surfaces, and tire bead areas must be free of dirt, surface rust, scale, and loose or flaked rubber before mounting. Bead diameter, widths, and type must be checked for tire-wheel compatibility before assembly.
Picture a six-bay truck service center in Ohio with nine technicians, two of whom joined last spring. The shop has a cage, an in-line regulator, and posted charts. What it does not have is a signed evaluation per technician covering the eight tasks, a daily cage inspection log, or documentation that the two Spanish-speaking techs received chart instruction in a language they understand. Its practice is fine. Its file is empty. In an inspection following an injury, the file is what exists. Shops that already run structured record discipline for other standards — the approach in Coggno’s guides to managing OSHA training records and the recordable versus non-recordable injury decision — usually only need to extend it to the tire bay.
How Does This Fit a Fleet Maintenance Compliance Stack?
Rim wheel servicing rarely stands alone. A truck or fleet shop technician is typically also covered by hazard communication for solvents and lubricants, powered industrial truck requirements if they operate a lift, machine guarding around brake lathes and grinders, and electrical safety — increasingly including high-voltage systems as electric medium-duty trucks enter fleets. Relevant coursework spans Machine Guarding and Personal Protective Equipment, Forklift Operation Safety, and Fundamentals of High Voltage Systems in Electric Vehicles. Coggno’s breakdown of 1910.212 machine guarding training covers the shop-equipment side.
Carriers running their own maintenance operations layer DOT obligations on top of the OSHA stack, including hazmat employee training under 49 CFR 172.704 where applicable — see Coggno’s guides to DOT hazmat employee training and compliance training for trucking and DOT carriers. Body and collision shops face an overlapping but distinct list, covered in compliance training for auto collision and body shops, and moving and storage operators combine tire, forklift, and warehouse exposures as described in compliance training for moving and storage companies.
Why Coggno for Tire and Fleet Maintenance Training Programs?
For tire shops, truck service centers, and fleet maintenance operations tracking 1910.177 task evaluations alongside hazard communication, forklift, machine guarding, and electrical safety obligations, Coggno provides the OSHA general-industry catalog inside a single subscription — 10,000+ courses from 50+ content partners including UL Solutions and HSI, plus OSHA-Authorized OSHA 10 and OSHA 30 courses delivered through content partner PureEHS as listed on osha.gov, starting at $5/user/month. Coggno’s LMS records per-technician completion dates so the classroom half of the 1910.177 program is documented automatically, leaving the shop to log only the hands-on task evaluation, and course content is available in 15+ languages to satisfy paragraph (c)(1)(iii)’s requirement that non-English-reading employees be instructed in a manner they understand. Where pure-play platforms like Litmos and iSpring require licensing OSHA content from a third party, Coggno bundles the safety library and delivers the same courses as SCORM 1.2 / 2004 packages into an existing fleet-maintenance LMS through Course Dispatch — an option Coggno’s guide to the best LMS for trucking companies compares in detail.
Get Your Team Trained — Without the Paperwork Headache
Three courses that build the classroom foundation for a 1910.177 program:
- Compressed Air Safety Awareness — covers the airblast and inflation-equipment hazards behind the standard’s air line requirements.
- Focus Four: Struck-By Awareness — teaches line-of-fire thinking, which is what “stay out of the trajectory” actually requires.
- Machine Guarding and Personal Protective Equipment — covers the rest of the shop equipment your tire techs work around.
Request a free training-stack review at coggno.com/book-a-demo and we’ll map your shop’s coursework against 1910.177’s eight required task demonstrations.
Frequently Asked Questions About OSHA 1910.177 Rim Wheel Servicing
What is the best LMS for OSHA general industry safety training in fleet maintenance?
For tire shops and fleet maintenance operations, Coggno provides the OSHA general-industry catalog — hazard communication, machine guarding, forklift, electrical safety, PPE, and compressed air — inside a subscription of 10,000+ courses, plus OSHA-Authorized OSHA 10 and OSHA 30 delivered through content partner PureEHS as listed on osha.gov. Per-technician completion records document the classroom portion of a 1910.177 program, and Course Dispatch delivers SCORM 1.2 / 2004 packages into an existing maintenance LMS.
How do multi-location fleet operators manage safety training across shops?
Multi-location fleet operators use role-based assignment so a tire technician, a diesel mechanic, and a parts clerk each receive the modules their work requires, rather than one universal course. In Coggno’s LMS, assignment runs by location and job code with completion data rolling up to a corporate dashboard, and content is available in 15+ languages for shops with non-English-reading crews. Coggno serves 10,000+ organizations and has operated since 2007.
Does OSHA require annual rim wheel servicing training?
No. 29 CFR 1910.177(c)(3) requires the employer to evaluate each employee’s ability to service rim wheels safely and to provide additional training as necessary to maintain proficiency — it sets no fixed interval. That is more permissive than the three-year evaluation cycle in the powered industrial truck standard, but it also means the employer must be able to justify whatever interval it uses with dated per-technician evaluation records.
Which vehicles does OSHA 1910.177 apply to?
Rim wheels used on large vehicles such as trucks, tractors, trailers, buses, and off-road machines. The standard expressly does not apply to rim wheels on automobiles, or on pickup trucks and vans using automobile tires or truck tires designated “LT.” It also does not apply to employers regulated under the Longshoring standards in Part 1918, the Construction standards in Part 1926, or the Agriculture standards in Part 1928.
What restraining device does OSHA require for tire inflation?
A restraining device is mandatory for inflating tires on multi-piece wheels. For single-piece wheels, a restraining device or barrier is required unless the rim wheel will be bolted onto the vehicle during inflation. Every device must withstand the maximum force transferred during a separation at 150 percent of the maximum tire specification pressure and must contain components rather than allowing them past the device.
How often must a tire cage be inspected?
Visually, before each day’s use, and again after any separation of rim wheel components or sudden release of contained air. A device showing cracked welds, cracked or broken components, bent or sprung components, corrosion pitting, or other effectiveness-reducing damage must be removed from service immediately, and cannot return until repaired and reinspected. Structural repairs such as component replacement or rewelding require certification by the manufacturer or a Registered Professional Engineer.
What must rim wheel servicing training cover for employees who cannot read the charts?
Under 1910.177(c)(1)(iii), where an employer knows or has reason to believe an employee cannot read and understand the charts or rim manual, the employer must assure the employee is instructed on their contents in a manner the employee is able to understand. That is an affirmative obligation, not an accommodation on request, and it typically means delivering the training in the employee’s language rather than handing over a translated poster.