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Comprehensive Guide to Emergency Vehicle Inspection and Maintenance Dynamics

This guide outlines the critical inspection and maintenance processes for emergency vehicles. Regular inspections ensure operational readiness and safety, covering pre-trip and post-trip protocols, vehicle system evaluations, and necessary record-keeping practices. We delve into various types of preventative maintenance, including routine and scheduled checks, and the importance of timely interventions. Drivers play a crucial role in these processes, impacting vehicle dynamics through their actions during inspections and driving. Understanding the forces acting upon vehicles, such as friction and inertia, is also essential for safe operation.

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Comprehensive Guide to Emergency Vehicle Inspection and Maintenance Dynamics

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Presentation Transcript

  1. Unit – 3 Inspection & Dynamics The inspection process may seem routine but every trip changes things. Always inspect carefully.

  2. Inspections & Maintenance Objectives • Understand the value and importance of regular inspections of emergency vehicles. • Identify the major component system of an emergency vehicle. • Understand how to perform pre and post-trip inspections.

  3. Inspections & Maintenance Objectives • Understand the various classes of PM and the importance of a PM program for emergency vehicles. • Recognize the role of the driver in inspections and maintenance. • Understand the importance of keeping accurate and complete records.

  4. Types of Preventative Maintenance • Routine Maintenance • Scheduled Maintenance • Crisis Maintenance

  5. Vehicle Inspection

  6. Inspections – Pre-Trip • Vehicle overview • Check engine compartment • Start engine and check inside cab • Check headlights, signal lights, warning lights and audio devices • Conduct walk around inspection • Check controls and indicators • Check brake system (air brakes)

  7. Check the Log • Maintenance Records • Operational Records

  8. Emergency Vehicle Components • Chassis • Frame • Suspension System • Steering & Braking System • Power Train Components

  9. Vehicle Characteristics • Suspension Systems • Axles • Springs • Wheels

  10. Role of the Emergency Vehicle Driver • Lubrication • Oil (Engine) • Tires • Steering System • Belts • Tools, Appliances, and Equipment

  11. Role of the Emergency Vehicle Driver • Battery or Batteries • Coolant System • Electrical System • Fuel • Hydraulic Fluids • Braking System

  12. Vehicle Characteristics • Braking Systems • Anti-Lock Braking System (ABS) • Secondary or Auxiliary Braking Systems • Engine Brake • Automatic Transmission Retarder • Driveline Retarder

  13. Types of Preventative Maintenance • Routine • Fluid level checks • Wheels and tires • Electrical system and devices

  14. Vehicle Inspection 4/32” Front tires 2/32” Rear tires

  15. Vehicle Inspection

  16. Preparing to Drive • Effective Start-Up Procedures • Circle of Safety Inspection • Adjustment of cab features • Wearing of occupant restraints • Receive signal before moving

  17. Role of the Emergency Vehicle Driver • Document the need for maintenance on the assigned vehicle • Verify that the request and needed maintenance was performed.

  18. Types of Preventative Maintenance • Scheduled • Manufacturer's recommended schedule • Amount of use • Organizational policy • Professional standards

  19. Vehicle Forces and Dynamics

  20. Vehicle Dynamics Objectives • Understand the physical forces which act upon vehicles and their impact upon vehicle handling. • Recognize that certain vehicle characteristics can influence the impact of physical forces on emergency vehicles

  21. Physical Forces • Friction • Velocity • Momentum • Inertia • Centrifugal Force

  22. Vehicle Characteristics • Total Weight and Weight Distribution • Suspension system • Braking system • Baffling system

  23. Vehicle Characteristics • Total weight and weight distribution. • Gross Axle Weight Rating (GAWR) • Gross Vehicle Weight rating (GVWR) • Weight Distribution – horizontal & vertical centers of gravity

  24. Physical Forces • Momentum – is measures as the product of the object’s mass or weight times its velocity • Inertia – is the force it takes for a moving object to stay in motion in the same direction

  25. Physical Forces • Directional Control is a derivative of three (3) factors • Steering • Turning • Tracking

  26. Centrifugal Forces

  27. Physical Forces • Friction – resistance to motion between two moving objects that touch. • Tire/Road Friction • Brake Friction • Steering Friction

  28. Tire Blowout

  29. Physical Forces • Velocity – Velocity is Speed • Acceleration • Deceleration • Braking

  30. Braking & ABS • Acceleration • Deceleration • Braking

  31. Post Trip Considerations

  32. Inspections – Post-Trip • Cleaning of the vehicle • Replacing supplies • Re-fueling and checking fluid levels • Report any unusual occurrences or malfunctions.

  33. Unit – 3 Inspection & Dynamics

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