PM Class A Basic Safety Maintenance Checklist for International Trucks

Complete this comprehensive PM Class A basic safety maintenance to ensure optimal performance, reliability, and safety of your International truck fleet.

PM Class A Basic Safety Maintenance Information

PM Class A Basic Safety Maintenance represents the fundamental preventive maintenance level for International trucks, focusing on essential safety systems, routine inspections, and basic service items. This maintenance class ensures vehicle reliability, extends component life, reduces unscheduled downtime, and maintains compliance with safety regulations while optimizing operational costs.

PM Class A Basic Safety Maintenance Procedures

Follow these structured PM Class A maintenance procedures for your International truck to ensure comprehensive basic safety maintenance.

Engine Oil and Filter Service

Drain engine oil completely when engine is warm
Replace oil filter with International approved filter
Install new drain plug with proper torque specification
Fill with recommended International engine oil grade
Check oil level using dipstick after engine warm-up
Inspect for leaks around drain plug and filter
Reset oil life monitor per International procedures
Record oil change in maintenance log with mileage

Air Filter System Maintenance

Remove and inspect primary air filter element
Replace if dirty or damaged beyond cleaning
Clean reusable filters per manufacturer instructions
Check air filter housing for cracks or damage
Inspect air intake ducting for proper connections
Replace safety element if contaminated
Reset air filter restriction indicator
Verify proper filter sealing and installation

Fuel System Basic Service

Drain water from fuel/water separator
Replace fuel filter(s) per service interval
Prime fuel system after filter replacement
Check fuel lines for leaks or damage
Inspect fuel tank and mounting straps
Test fuel cap seal and vacuum relief
Check fuel gauge accuracy and sender operation
Verify proper fuel quality and contamination levels

Cooling System Inspection and Service

Check coolant level in expansion tank when cold
Test coolant concentration with refractometer
Inspect radiator fins for debris and damage
Check all hoses for cracks, swelling, or leaks
Test radiator cap pressure rating
Inspect water pump for leaks or bearing noise
Check thermostat operation and opening temperature
Verify cooling fan operation and shroud condition

PM Class A Component Safety Maintenance

Perform these essential PM Class A safety maintenance tasks on critical International truck components.

Brake System Basic Maintenance

Inspect brake pads/shoes for minimum thickness
Check brake rotors/drums for scoring or excessive wear
Test air brake system pressure build-up time
Drain moisture from air tanks and reservoirs
Inspect brake lines and connections for leaks
Check slack adjusters for proper operation
Test parking brake effectiveness and adjustment
Verify ABS warning light operation and functionality

Steering and Suspension Safety Check

Check steering wheel free play (maximum 2 inches)
Inspect power steering fluid level and condition
Check tie rod ends and ball joints for wear
Inspect leaf springs for cracks or broken leaves
Check shock absorbers for leaks and proper operation
Verify proper wheel alignment and tire wear patterns
Inspect steering gear box for leaks
Test steering return-to-center functionality

Tire and Wheel Maintenance

Check tire pressure on all tires when cold
Inspect tire tread depth with depth gauge
Look for irregular wear patterns or damage
Check lug nut torque to specification
Inspect wheels for cracks or damage
Rotate tires per International recommendation
Check valve stems and caps for leaks
Document tire conditions and remaining life

Electrical System Basic Service

Test battery voltage and specific gravity
Clean battery terminals and apply protectant
Check alternator belt tension and condition
Test charging system output and regulation
Inspect wiring harnesses for damage or chafing
Check all exterior lights for proper operation
Test dashboard warning lights and gauges
Verify starter motor operation and draw test

Drive Belt and Pulley Inspection

Inspect serpentine belt for cracks or fraying
Check belt tension using proper gauge
Examine pulleys for proper alignment
Look for bearing noise in idler pulleys
Check tensioner operation and spring function
Inspect crankshaft pulley for wobble or damage
Verify belt routing per International specifications
Replace belts showing wear or damage

Exhaust System Safety Inspection

Inspect exhaust pipes for cracks or holes
Check mounting brackets and hangers
Verify proper exhaust pipe clearances
Test diesel particulate filter (DPF) if equipped
Check DEF (diesel exhaust fluid) level and quality
Inspect SCR catalyst and mounting
Verify exhaust gas recirculation (EGR) operation
Look for excessive exhaust smoke or emissions

Cab and Body Safety Maintenance

Check cab mounts and shock absorbers
Inspect door hinges and latches for proper operation
Test windshield wipers and washer system
Check mirrors for proper adjustment and condition
Inspect seat belts and mounting points
Verify HVAC system operation and cabin air filter
Check fire extinguisher pressure and expiration
Inspect steps and handholds for security

Fifth Wheel and Coupling Maintenance

Grease fifth wheel plate per lubrication schedule
Inspect fifth wheel locking mechanism
Check air line connections and glad hands
Test electrical connections (7-way plug)
Inspect kingpin and bushing wear
Check fifth wheel mounting bolts for tightness
Verify proper fifth wheel height adjustment
Test trailer brake hand valve operation

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