Comprehensive inspection and maintenance procedures for all bus types, focusing on key systems like engine, brakes, suspension, and safety equipment to ensure vehicle readiness and passenger safety.
Engine and Drivetrain Systems
Check engine oil level and condition for proper viscosity and contamination.
Inspect coolant level, condition, and check for leaks in the cooling system.
Verify air filter condition and replace if dirty or clogged.
Test engine performance including idle quality and acceleration response.
Inspect transmission fluid level and condition (automatic transmissions).
Check drive belts for proper tension, wear, and alignment.
Examine exhaust system for leaks, damage, or excessive emissions.
Verify fuel system components including filters and lines for leaks.
Brake System Inspection
Test air brake system pressure and check for proper build-up time.
Inspect brake drums, rotors, and pads for wear and scoring.
Check brake lines and fittings for leaks or damage.
Verify parking brake operation and adjustment.
Test service brake pedal feel and travel distance.
Inspect air dryer and moisture ejector valve operation.
Check brake chamber diaphragms and push rod travel.
Verify anti-lock braking system (ABS) warning lights function properly.
Suspension & Steering Components
Inspect shock absorbers and struts for leaks and proper operation.
Check suspension bushings and mounts for wear and cracking.
Verify steering wheel play is within acceptable limits.
Examine power steering fluid level and check for leaks.
Test steering alignment and inspect for tire wear patterns.
Check ball joints and tie rod ends for excessive play.
Inspect leaf springs or air suspension components for damage.
Verify proper ride height and load distribution.
Electrical Systems & Lighting
Test all exterior lights including headlights, taillights, and turn signals.
Verify interior lighting and emergency lighting systems function.
Check battery condition, terminals, and charging system performance.
Inspect alternator output and belt condition.
Test dashboard warning lights and gauges for proper operation.
Verify wiper and washer system operation and fluid levels.
Check horn operation and sound level compliance.
Inspect electrical connections for corrosion or looseness.
Safety Equipment & Systems
Verify fire extinguisher is charged and properly mounted.
Test emergency exits and window operation mechanisms.
Check first aid kit contents and expiration dates.
Inspect safety triangles or flares for emergency roadside use.
Verify backup alarm operation and sound level.
Test intercom and PA system functionality.
Check wheelchair lift or ramp operation and safety features.
Inspect passenger restraint systems and accessibility equipment.
Tires & Wheels
Check tire pressure on all positions including spare tire.
Measure tread depth and inspect for uneven wear patterns.
Examine tire sidewalls for cuts, bulges, or weather checking.
Verify wheel lug nuts are properly torqued and not missing.
Inspect wheels for cracks, damage, or excessive corrosion.
Check valve stems and caps for damage or air leaks.
Verify tire rotation records and schedule next rotation.
Document tire conditions and replacement recommendations.
Body & Interior Inspection
Inspect body panels for damage, rust, or structural integrity.
Check door operation, seals, and safety mechanisms.
Verify seat mounting and condition for passenger safety.
Inspect floor covering and step treads for wear and safety.
Check mirrors for proper adjustment and crack-free condition.
Examine windshield and windows for chips or cracks.
Verify ventilation and HVAC system operation.
Document any interior damage or cleaning requirements.
Fluid Levels & Documentation
Record all fluid levels including oil, coolant, brake, and power steering.
Document mileage, hours of operation, and service intervals.
Update maintenance records and schedule next inspection.
Note any defects found and prioritize repair requirements.
Verify vehicle registration and inspection certificates are current.