Introduction
Preventive maintenance is essential for ensuring the reliability, safety, and longevity of International Trucks. This comprehensive checklist organizes maintenance tasks into four distinct classes (A through D) based on maintenance intervals and complexity. Following this structured approach helps fleet managers and technicians systematically address all maintenance needs while optimizing vehicle uptime and reducing total cost of ownership.
Each maintenance class builds upon the previous one, ensuring that all critical systems are inspected and serviced at appropriate intervals. By following this International Truck preventive maintenance checklist, you can identify potential issues before they lead to costly breakdowns, ensure compliance with manufacturer warranty requirements, and maximize the operational life of your fleet.
Understanding Preventive Maintenance Classes
- Class A (Basic Service) - Every 7,500 miles: Focuses on routine maintenance including fluid checks/changes, filter replacements, and basic safety inspections. Typically performed every 7,500 miles or monthly.
- Class B (Intermediate Service) - Every 15,000 miles: Includes all Class A services plus more detailed inspections of brake systems, steering components, and drivetrain. Typically performed every 15,000 miles or quarterly.
- Class C (Comprehensive Service) - Every 30,000 miles: Encompasses all Class A and B services plus in-depth inspection and servicing of suspension, exhaust, cooling system, and fuel system components. Typically performed every 30,000 miles or semi-annually.
- Class D (Major Service) - Every 60,000 miles: The most thorough maintenance service that includes all previous class services plus major component inspections, adjustments, and overhauls as needed. Typically performed every 60,000 miles or annually.
Equipment Information
(7,500 miles)
(15,000 miles)
(30,000 miles)
(60,000 miles)
Class A Service - 7,500 Miles / Monthly
Fluids and Filters
Engine System
Electrical System
Brake System
Tires and Wheels
Cab Interior
Class B Service - 15,000 Miles / Quarterly
Includes all Class A services plus the following:
Lubrication
Filters
Brake System Detailed
Cooling System
Electrical System Detailed
Drivetrain
Class C Service - 30,000 Miles / Semi-Annual
Includes all Class A and B services plus the following:
Transmission
Cooling System Service
Fuel System
Exhaust/Aftertreatment
Suspension
Steering System
Class D Service - 60,000 Miles / Annual
Includes all Class A, B, and C services plus the following:
Cooling System Overhaul
Drivetrain Service
Major Brake Service
Air System Service
Electrical Comprehensive
Fifth Wheel & Coupling
Key Maintenance Procedures
Follow these structured procedures to ensure thorough and effective maintenance of your International Truck.
Oil Change Procedure
- Warm engine to operating temperature
- Drain oil completely (minimum 15 minutes drain time)
- Replace oil filter with OEM recommended filter
- Fill with correct viscosity oil per specifications
- Check for leaks after filling
- Run engine briefly, then recheck oil level
Air Brake Adjustment
- Check slack adjuster free stroke (should be 0.5-0.75 inches)
- Measure chamber pushrod travel at 90-100 psi
- Adjust manual slack adjusters if stroke exceeds specs
- Check automatic slack adjuster operation
- Verify brake lining to drum contact
- Document all measurements in maintenance record
Cooling System Service
- Drain cooling system completely (engine cold)
- Flush system with clean water until clear
- Replace thermostats and gaskets
- Fill with premixed coolant to proper level
- Run engine to operating temperature with cap off
- Check for leaks and proper coolant flow
- Top off coolant after system is bled
DPF/Aftertreatment Inspection
- Connect diagnostic tool and check fault codes
- Measure DPF differential pressure
- Inspect DEF tank and fluid quality
- Check all sensors and wiring connections
- Verify proper dosing pump operation
- Perform forced regeneration if required
- Document all parameters in service record
Maintenance History
Record all service performed on this vehicle to maintain a comprehensive maintenance history.
| Date | Mileage | Service Class | Technician | Notes |
|---|---|---|---|---|
Inspection Progress
0% complete
Technician Certification
I hereby certify that I have performed all checked items in accordance with manufacturer specifications and industry standards.
Apply Signature
Maintenance Notes & Recommendations
Conclusion
Implementing this comprehensive International Truck Preventive Maintenance Checklist is essential for maximizing vehicle reliability, safety, and longevity. By following the structured approach of Class A through D maintenance intervals, fleet managers and technicians can ensure all critical systems are inspected and serviced appropriately, reducing the risk of unexpected breakdowns and extending the service life of these valuable assets.
For optimal maintenance management, consider implementing the FleetRabbit software to streamline your preventive maintenance program. The FleetRabbit platform allows digital documentation of all maintenance activities, provides automated service reminders based on mileage or time intervals, and creates comprehensive historical records for each vehicle in your fleet. With the FleetRabbit APP, fleet managers can easily track compliance with manufacturer-recommended maintenance schedules, monitor maintenance costs, and ensure all vehicles receive appropriate service at the right intervals.
Make International Truck preventive maintenance an integral part of your fleet management strategy with the FleetRabbit software's comprehensive maintenance management solution. This digital approach significantly improves maintenance documentation, scheduling, and planning while reducing administrative burden on technicians and fleet managers.
Access the digital version of this checklist through the FleetRabbit APP
© 2025 International Truck Preventive Maintenance Checklist (Class A to D) | Developed by FleetRabbit | Contact us at support@fleetrabbit.com for customized maintenance solutions.