PM Class C Comprehensive Preventive Maintenance for International Trucks

Complete comprehensive maintenance and overhaul procedures for all International truck models to ensure maximum performance, reliability, and service life.

International Trucks PM Class C Comprehensive Service Information

This PM Class C comprehensive preventive maintenance checklist is designed for all International truck models including LT Series, HV Series, HX Series, CV Series, and WorkStar models. This extensive maintenance procedure should be performed every 50,000-100,000 miles or annually, depending on operating conditions. PM Class C includes major component overhauls, system replacements, and complete vehicle inspections to maximize truck life and prevent costly breakdowns.

⏰ PM Class C Service Interval Recommendations

Standard Duty: Every 75,000-100,000 miles or 12-18 months
Severe Duty: Every 50,000-75,000 miles or 12 months
Operating Hours: Every 3,000-4,000 engine hours
Over-the-Road: Every 100,000-150,000 miles or 24 months

🔧 MAJOR OVERHAUL COMPONENTS

PM Class C service may include major component overhauls such as engine rebuilds, transmission overhauls, differential rebuilds, and complete brake system overhauls. Schedule 3-5 days downtime for comprehensive service.

International Trucks PM Class C Comprehensive Service Procedures

Follow these extensive comprehensive service procedures for all International truck models.

Engine Complete Overhaul & Service

Complete engine oil analysis and contamination testing
Perform compression test and cylinder leak-down test
Replace all engine fluids (oil, coolant, fuel additives)
Replace all filters (oil, fuel, air, hydraulic)
Inspect and replace engine mounts if worn
Overhaul or replace turbocharger if due
Replace all belts, hoses, and gaskets
Perform complete engine timing inspection
Test engine performance under load conditions
Update ECM software and calibrations

Transmission Complete Overhaul

Complete transmission overhaul or replacement
Replace all transmission fluids and filters
Inspect and replace clutch components if manual
Overhaul torque converter if automatic
Replace transmission cooler and lines
Inspect and repair transmission mounts
Test all gear ranges and shift quality
Calibrate electronic transmission controls
Replace driveline components as needed
Document transmission overhaul specifications

Complete Brake System Overhaul

Replace all brake pads and rotors/drums
Overhaul or replace brake chambers
Replace all air brake lines and fittings
Overhaul air compressor and dryer system
Replace slack adjusters and hardware
Rebuild or replace ABS components
Test and calibrate brake system pressures
Replace parking brake components
Perform complete brake system leak test
Update brake system software and diagnostics

Cooling System Complete Overhaul

Replace radiator and all cooling system components
Overhaul or replace water pump and thermostat
Replace all coolant hoses and clamps
Service or replace cooling fan and clutch
Replace charge air cooler and connections
Flush and refill complete cooling system
Test cooling system under load conditions
Replace coolant reservoir and cap
Inspect and repair cooling system leaks
Document cooling system specifications

International Trucks PM Class C Comprehensive Component Overhaul

Inspect, overhaul, or replace these major International truck components during comprehensive maintenance.

Complete Differential Overhaul

Complete differential teardown and inspection
Replace all differential gears and bearings
Replace differential seals and gaskets
Resurface or replace differential housing
Replace axle shafts and U-joints
Overhaul wheel ends and bearings
Replace differential oil and additives
Test differential operation under load
Verify proper gear backlash and preload
Document differential overhaul specifications

Complete Suspension Rebuild

Replace all leaf springs and bushings
Overhaul or replace shock absorbers
Replace suspension mounting hardware
Rebuild or replace air suspension components
Replace stabilizer bars and links
Inspect and repair frame mounting points
Replace cab suspension components
Test suspension alignment and geometry
Verify proper ride height and load capacity
Document suspension specifications

Complete Electrical System Overhaul

Replace batteries and charging system components
Overhaul or replace alternator and starter
Replace all lighting systems and controls
Update all electronic control modules
Replace main wiring harnesses
Overhaul instrument cluster and gauges
Replace HVAC electrical components
Test and calibrate all electronic systems
Update software and firmware
Document electrical system specifications

Exhaust & Emissions System Overhaul

Replace complete exhaust system
Overhaul or replace diesel particulate filter
Replace selective catalytic reduction system
Overhaul exhaust gas recirculation system
Replace all aftertreatment sensors
Update emissions control software
Test emissions compliance and performance
Replace DEF tank and delivery system
Perform complete emissions system calibration
Document emissions system specifications

Complete Fuel System Overhaul

Replace fuel tank and all fuel lines
Overhaul or replace fuel injection system
Replace all fuel filters and water separators
Overhaul fuel pumps and transfer pumps
Replace fuel rail and injectors
Clean and inspect fuel tank interior
Test fuel system pressure and flow
Replace fuel system sensors and controls
Perform fuel system leak test
Document fuel system specifications

Complete Steering System Overhaul

Overhaul or replace steering box/rack
Replace all steering linkages and joints
Overhaul power steering pump and reservoir
Replace steering column and controls
Replace tie rod ends and drag links
Perform complete front end alignment
Test steering system under load
Replace steering damper and stabilizer
Verify proper steering geometry
Document steering system specifications

Complete HVAC System Overhaul

Replace air conditioning compressor and condenser
Overhaul heater core and evaporator
Replace all HVAC hoses and fittings
Recharge refrigerant system completely
Replace blower motor and resistors
Replace all cabin air filters
Test HVAC system performance
Replace HVAC controls and actuators
Verify proper temperature control
Document HVAC system specifications

Complete Frame & Body Restoration

Inspect and repair frame cracks or damage
Sandblast and repaint frame components
Replace body panels and exterior trim
Overhaul cab mounting and isolation
Replace door hinges and hardware
Restore or replace interior components
Replace glass and sealing systems
Apply protective coatings and undercoating
Test structural integrity and alignment
Document frame restoration specifications

Complete Documentation & Certification

Complete comprehensive service documentation
Update all maintenance records and history
Document all component overhauls and replacements
Update electronic logging and tracking systems
Perform complete DOT inspection and certification
Schedule next PM Class C service interval
Provide comprehensive service summary
Update warranty and service agreements
File all documentation properly
Train operator on updated systems

⚠️ COMPREHENSIVE OVERHAUL NOTICE

PM Class C comprehensive maintenance represents a major investment in vehicle life extension. This level of service typically costs $15,000-$50,000 but can extend vehicle life by 200,000-500,000 miles. Proper planning and execution are essential for maintaining fleet reliability and minimizing total cost of ownership.

Use PM Class C Checklist Online