{"schemaVersion":"1.0","exportedAt":"2026-05-15T12:39:37.610Z","occupation":{"soc":"49-3031.00","title":"Bus and Truck Mechanics and Diesel Engine Specialists","group":"Installation, Maintenance & Repair","sector":"81","jobZone":3,"jobZoneInferred":false},"framework":{"version":"v.26.05","description":"","contextCovered":"This framework covers the inspection, diagnosis, repair, and preventive maintenance of buses, trucks, and heavy diesel equipment across commercial fleet shops, transit authorities, and freight operations, calibrated to Job Zone 3 vocational and apprenticeship preparation.","levels":{"emerging":{"label":"Emerging","statements":["Hand tools and basic power tools — identify and use under direct supervision during routine service tasks at a commercial vehicle maintenance shop.","Brake system components and steering mechanisms — inspect visually following a checklist under technician guidance in a fleet maintenance bay.","Hydraulic jacks and hoists — operate to raise trucks and heavy equipment under close supervision in accordance with shop safety protocols.","Brake adjustment and wheel alignment procedures — perform basic steps with direct oversight while reassembling light-duty commercial vehicle components.","Test instruments and pressure gauges — attach to vehicle systems and read dials under supervisor direction to support initial malfunction diagnosis.","Routine maintenance tasks — execute oil changes, battery checks, and lubrication on buses and trucks following a prescribed maintenance schedule.","Protective guards, loose bolts, and safety devices — examine and report discrepancies to a lead technician during pre-trip inspection routines.","Defective equipment — listen for abnormal sounds and document observations using a handheld computer under guidance from an experienced mechanic.","Shop safety rules and personal protective equipment — apply consistently during all repair and maintenance activities in a vocational training or entry-level shop environment.","Parts and fluid inventory — locate, retrieve, and log basic components using shop inventory management software under supervisory direction."]},"developing":{"label":"Developing","statements":["Hand tools, pneumatic wrenches, and welding equipment — select and operate with limited oversight to complete scheduled repairs on medium-duty diesel trucks.","Brake systems, wheel bearings, and steering mechanisms — inspect and evaluate independently against manufacturer specifications during scheduled preventive maintenance visits.","Hydraulic hoists and floor jacks — position and operate without direct supervision to safely raise buses and heavy equipment in a busy fleet shop.","Brake relining, wheel alignment, and bolt torquing — adjust and complete reassembly to specification across a range of commercial vehicle models encountered in daily workflow.","Motor analyzers and chassis diagnostic charts — connect and interpret readings to isolate malfunctions on diesel engines with moderate complexity in a fleet maintenance environment.","Preventive maintenance intervals — manage and document oil changes, battery load tests, and lubrication cycles for multiple vehicles using facilities management software.","Safety guards and critical fasteners — systematically examine and adjust on returning fleet vehicles, escalating findings that exceed acceptable tolerances to senior staff.","Diagnostic data from handheld computers and pressure gauges — analyze and cross-reference to narrow probable causes of reported drivability complaints on route buses.","Repair timelines and work orders — prioritize and communicate with dispatchers and service writers to ensure on-time vehicle return in a high-volume commercial shop.","Troubleshooting findings and repair recommendations — document clearly using word processing and spreadsheet software to maintain accurate vehicle service histories."]},"proficient":{"label":"Proficient","statements":["Full range of hand tools, precision instruments, and power equipment — deploy autonomously to perform complex overhauls on heavy-duty diesel engines and drivetrain systems.","Brake systems, steering geometry, and suspension components — diagnose and repair comprehensively across diverse bus and truck makes and models without supervisory input.","Hydraulic lifting equipment and specialized hoists — select and configure appropriately for non-standard vehicle configurations and oversized components in a large fleet facility.","Multi-system reassembly including brake relining, wheel alignment, and torque sequencing — execute to manufacturer and regulatory standards on vehicles returning to revenue service.","Advanced diagnostic software, motor analyzers, and analytical instruments — apply systematically to resolve intermittent or multi-system faults on electronically controlled diesel powertrains.","Comprehensive preventive maintenance programs — evaluate and refine schedules for large mixed fleets, incorporating oil analysis data and manufacturer service bulletins.","Safety device compliance and protective guard integrity — assess against federal and state commercial vehicle standards and authorize return-to-service decisions independently.","Complex equipment malfunctions — troubleshoot using deductive reasoning and field experience to identify root causes and prevent recurrence across a fleet of transit or freight vehicles.","Repair cost estimates and parts sourcing — prepare accurately using materials requirements planning and inventory software to support maintenance budgeting in a fleet operation.","Technical guidance and hands-on coaching — provide to developing technicians during challenging diagnostic or repair scenarios in the shop environment."]},"advanced":{"label":"Advanced","statements":["Shop-wide maintenance strategy and quality standards — develop and enforce across all technician levels to ensure regulatory compliance and maximum fleet uptime.","Diagnostic and repair competency frameworks — design and implement for the full technician team, mapping training to O*NET skill domains and industry certification requirements.","Fleet maintenance technology investments — evaluate and recommend adoption of new diagnostic software, CAD/CAM tooling, and telematics systems at the organizational level.","Cross-functional safety and inspection programs — lead in alignment with federal DOT and state public safety regulations, reducing out-of-service rates across the entire vehicle fleet.","Complex multi-system failure investigations — direct and resolve at the fleet or enterprise level, synthesizing data from multiple diagnostic platforms and technician reports.","Preventive and predictive maintenance policies — author and continuously improve using fleet performance data, driving measurable reductions in unplanned downtime and repair costs.","Technician hiring, onboarding, and career development — oversee to build a high-performing maintenance team capable of servicing advanced diesel and alternative-fuel vehicles.","Vendor and parts supplier relationships — manage strategically using supply chain and inventory management systems to optimize cost, quality, and parts availability for the organization.","Organizational performance metrics and maintenance KPIs — establish, monitor, and present to senior leadership to drive continuous improvement in fleet reliability and cost efficiency.","Industry knowledge and best practices — represent externally through participation in professional associations, technical standards committees, or apprenticeship program development."]}}},"sources":{"onet":"v30.2 (CC BY 4.0)","crosswalk":"https://skillscrosswalk.com","generator":"LER.me"},"attribution":"© EBSCOed"}