Bus Maintenance Checklist

Comprehensive maintenance checklist for all bus types to ensure optimal performance, safety, and compliance with fleet management standards.

Engine and Powertrain

  • Check engine oil level and condition for proper viscosity and contamination.
  • Inspect coolant level, condition, and check for leaks in the cooling system.
  • Verify transmission fluid level and condition (automatic/manual).
  • Check differential oil levels in front and rear axles.
  • Inspect air filter condition and replace if clogged or dirty.
  • Test engine performance, idle quality, and check for unusual noises.
  • Verify fuel system integrity and check for leaks.
  • Inspect exhaust system for leaks, damage, or excessive emissions.

Brake System

  • Check brake fluid level and condition in master cylinder.
  • Inspect brake pads and shoes for wear and thickness.
  • Test service brake performance and pedal feel.
  • Verify parking brake operation and adjustment.
  • Check air brake system pressure and operation (if equipped).
  • Inspect brake lines and hoses for leaks or damage.
  • Test anti-lock brake system (ABS) functionality.
  • Verify brake warning lights and indicators are functional.

Suspension & Steering

  • Inspect front and rear suspension components for wear or damage.
  • Check shock absorbers and struts for leaks or deterioration.
  • Test steering wheel play and responsiveness.
  • Verify power steering fluid level and check for leaks.
  • Inspect tie rods, ball joints, and steering linkage.
  • Check wheel alignment and tire wear patterns.
  • Verify proper ride height and suspension travel.
  • Test steering wheel return and centering ability.

Tires & Wheels

  • Check tire pressure on all tires including spare tire.
  • Inspect tire tread depth using penny test or tread gauge.
  • Look for irregular wear patterns, cuts, bulges, or punctures.
  • Verify proper tire rotation schedule adherence.
  • Check wheel nuts/bolts for proper torque specifications.
  • Inspect wheels for cracks, corrosion, or damage.
  • Ensure tire sizes match manufacturer specifications.
  • Verify tire age and replace if beyond recommended service life.

Electrical System

  • Test battery voltage, specific gravity, and terminal connections.
  • Check alternator charging rate and belt condition.
  • Verify all exterior lights function properly (headlights, taillights, turn signals).
  • Test interior lighting and dashboard illumination.
  • Check wiper motor operation and blade condition.
  • Verify horn operation and sound level compliance.
  • Test warning buzzers and backup alarms.
  • Inspect electrical wiring for damage, chafing, or corrosion.

HVAC System

  • Test heating system operation and temperature output.
  • Check air conditioning system performance and refrigerant levels.
  • Inspect cabin air filters and replace if dirty or clogged.
  • Verify defrost system operation for windshield and windows.
  • Test all fan speeds and air distribution modes.
  • Check HVAC system belts and compressor operation.
  • Inspect ductwork for leaks or blockages.
  • Verify thermostat and climate control functionality.

Body & Interior Safety

  • Inspect driver and passenger seats for wear and proper adjustment.
  • Check seat belts for proper operation and webbing condition.
  • Verify all doors open, close, and latch securely.
  • Test emergency exits and ensure they operate properly.
  • Check mirrors for proper adjustment and cleanliness.
  • Inspect windshield and windows for chips, cracks, or obstruction.
  • Verify wheelchair lift operation and safety features (if equipped).
  • Check interior handrails and grab bars for security.

Emergency Equipment

  • Verify fire extinguisher is present, charged, and within inspection date.
  • Check first aid kit contents and expiration dates.
  • Test emergency communication equipment (radio, cellular).
  • Inspect emergency triangles or flares for availability and condition.
  • Verify emergency evacuation procedures are posted and visible.
  • Check emergency hammer or window breaker accessibility.
  • Test emergency lighting and backup power systems.
  • Ensure safety equipment documentation is current and accessible.
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